gentoo auto-resync : 10:11:2024 - 03:03:09

author: V3n3RiX <venerix@koprulu.sector> 2024-11-10 03:03:09 +0000
committer: V3n3RiX <venerix@koprulu.sector> 2024-11-10 03:03:09 +0000
commit: be94ae04eee564451203d45977c2ef7c7ace1580 (patch)
tree: 616ffc0ad9aee18dc7d5e9e62bf62394e8e520ba /dev-lang
parent: 2be329ae14bbf99f0fc4de7567e2386bbb529fdc (diff)
46 files changed, 8347 insertions, 188 deletions
diff --git a/dev-lang/Manifest.gz b/dev-lang/Manifest.gz
index 86f614d2602d..060fa8e7eb5f 100644
--- a/dev-lang/Manifest.gz
+++ b/dev-lang/Manifest.gz
diff --git a/dev-lang/dafny/Manifest b/dev-lang/dafny/Manifest
index b7a60baf74ba..8229b8bc708f 100644
--- a/dev-lang/dafny/Manifest
+++ b/dev-lang/dafny/Manifest
@@ -383,7 +383,7 @@ DIST xunit.extensibility.execution.2.4.2.nupkg 353652 BLAKE2B f10e20d43b8030f51c
 DIST xunit.runner.visualstudio.2.4.3.nupkg 809588 BLAKE2B ce18ac895657d1efa9752e44148812a452401fa06eba913dad716cfd6743d85a09ffbc0be52276a4b90d039ab76077cca7ab5316b73009aeff2b2fe77dc465f1 SHA512 d8b0d124425db24f98335b332fe55e1a08b39af55d8834dd4a2717fd4be45f3a06ae6cb16427a17adfb31e215dab622856152bb2da715acb1946ec9e935299f4
 DIST xunit.runner.visualstudio.2.5.1.nupkg 348549 BLAKE2B 530ffc6b699a1589ad6a7fb5aa826d7238b63ea8dcd13ce5705a3d29a0ba70edeac2d9950cd1a00a13a779add761e4e14335689051a43b4cd662a330734e4df7 SHA512 0cc7887e7c7c3315db31aab79df236db9b5542e0234c27543dd5b11cf917674a8fdebc384e7331663b08d586fcf20628479a20ad7edbed4e61667903e812c6f0
 DIST xunit.skippablefact.1.4.8.nupkg 44542 BLAKE2B 3c9b09d5196e8901770099b2e5078d9373e8ebc2da058a9071707d6fee56eab7c876578734f3be5b088db6ae83c8ad81a3aadfcab38e1fd2b28bd25601fe5463 SHA512 a2c680223bda4f9bfdbd751c8d6a5319e0a4611533272860ca0a396b26c473a13065301a5d8973074ea2bb5119caaeec5a67d547a96ae5d762dc09f337f51ad1
-EBUILD dafny-4.8.0.ebuild 21074 BLAKE2B ae75f8deabcaed465b401bbe50c014c00e9ce52ed64d129a84535e55042edae0a544df365824b2c441287577a6217cf7aac4fe4c1e1220add3a316b91bd4e890 SHA512 48dab85d2abf5f502cdaa139045eb75aa40c51f3a211b2a28523c08729c55d0cb99502bc2f16ce8b8370085f228accd2464e84389dcdcba7bf09d419888b1c4e
-EBUILD dafny-4.8.1.ebuild 21139 BLAKE2B 3f3638a3c33ae3aa115ffb38aad8f3ee8a23a17d0c82a9a23dbb71e089577645bb4a9d06cd42c43aa708276395cea3992b0d2ef2de2d39e950e93faa4f21749c SHA512 2fb1c49147e23acb8bf396ce675361a888d2313772c925cec2d94849ce1bf71e3148589ae45adfdd6cdb7bc009c393300c89a4a3269bc38e590d7b92db519f0a
-EBUILD dafny-4.9.0.ebuild 20371 BLAKE2B 16c0d2a89c677917d9bbff480d170b043cdbec71100194fbaca8bc2d4d5676ddbf3b221a545eece5dbae6a945e5eed6a9d9071656021a02fc89d8842e0d95299 SHA512 303963d54f5907b3b7f6bee2dff23cd48a5c5d7ecc211ae51684b850292ec58812d2e1883df48cc9de98d4ee2bc8e8e957989dd44b56561cb7a1fb6f7dee9267
+EBUILD dafny-4.8.0.ebuild 21093 BLAKE2B 7a0496a3822997a81d8b2fcb9bbb5dcf3429abc65edb21ed6d86c2ae376eb83bd86576c96eebb02f55ebf8c58254cfd095ba0bc7af241a47d96a377d0c42ba16 SHA512 9db507056717246a5443bfb548cc83d1d1243a323139288acc97d98c40c91d034768e4ff12ff9a11ef47bab1eaad6146f7d3bb07ee8ea7eee00626197d5a61f7
+EBUILD dafny-4.8.1.ebuild 21158 BLAKE2B d116ee0a687db1bd28e6d107150cb4ba14d99d982e48f5ae866441f8137ca4147d0604a36393487bde38b5a96bd0eff9457671e6435b74a747f71a03ac6e6d19 SHA512 373213c820aa663143977e0498156f6ba030f0a5023e2fd39dbb97035465d1d8408ad62e0f34d830b9f342c32bb63eb6244e8f2e88711b7df7b24d2f6738dc52
+EBUILD dafny-4.9.0.ebuild 20390 BLAKE2B c0bb40c5384cb8ac0e160f2428c3d4c6e338780c672c00666632c91544a733eca9d5697301ec1d7cdb59825d54325ec7f2f866cdbc7e610ff3bbe427f3b26396 SHA512 d86f24ebcf8d0630a12f38a043c46d2240ed6c58ed050637d77235063208f699d9a0d3376aa3d42fb35ca943832be2029644c9a6a0c39f22e4a59fb458d46542
 MISC metadata.xml 1884 BLAKE2B e3a53cfd90a4edf1d9fd9f567ac3c23fd88cc46602cfe6aea31ddc40585ebc89ab82833dcd21c82083671a54454d62f162f45d56d6b0ec9c202148b3d5ea2c6d SHA512 4cffb9c237ed85097ce1496a72f5aa9c5a0f5758402fe66ff745a3b1dbc3f8d9a40fecc9140ee1b9418f09b62794f7e0a47f908e6ba01b370087d4df62bfa46e
diff --git a/dev-lang/dafny/dafny-4.8.0.ebuild b/dev-lang/dafny/dafny-4.8.0.ebuild
index fc41fee57b24..d759dd478757 100644
--- a/dev-lang/dafny/dafny-4.8.0.ebuild
+++ b/dev-lang/dafny/dafny-4.8.0.ebuild
@@ -667,5 +667,5 @@ src_install() {
 
 pkg_postinst() {
 	optfeature "Dafny GO language backend" dev-go/go-tools
-	optfeature "Dafny Rust language backend" virtual/rust
+	optfeature "Dafny Rust language backend" dev-lang/rust dev-lang/rust-bin
 }
diff --git a/dev-lang/dafny/dafny-4.8.1.ebuild b/dev-lang/dafny/dafny-4.8.1.ebuild
index f1cba38874f6..0bf40a85c501 100644
--- a/dev-lang/dafny/dafny-4.8.1.ebuild
+++ b/dev-lang/dafny/dafny-4.8.1.ebuild
@@ -668,5 +668,5 @@ src_install() {
 
 pkg_postinst() {
 	optfeature "Dafny GO language backend" dev-go/go-tools
-	optfeature "Dafny Rust language backend" virtual/rust
+	optfeature "Dafny Rust language backend" dev-lang/rust dev-lang/rust-bin
 }
diff --git a/dev-lang/dafny/dafny-4.9.0.ebuild b/dev-lang/dafny/dafny-4.9.0.ebuild
index aad9495c760b..dd8da1ebd4cd 100644
--- a/dev-lang/dafny/dafny-4.9.0.ebuild
+++ b/dev-lang/dafny/dafny-4.9.0.ebuild
@@ -643,5 +643,5 @@ src_install() {
 
 pkg_postinst() {
 	optfeature "Dafny GO language backend" dev-go/go-tools
-	optfeature "Dafny Rust language backend" virtual/rust
+	optfeature "Dafny Rust language backend" dev-lang/rust dev-lang/rust-bin
 }
diff --git a/dev-lang/gleam/Manifest b/dev-lang/gleam/Manifest
index 608c7a42dca6..d70a30145246 100644
--- a/dev-lang/gleam/Manifest
+++ b/dev-lang/gleam/Manifest
@@ -1,5 +1,5 @@
 AUX gleam-1.4.0-rust178-compat.patch 1253 BLAKE2B 1a05f9b2cacd84a2bc52bd7cdf30470920f6c3ba406f8e5f0fc067128cb2630fc0ba4895ffeef2d5ff3f1ce9ffef60147267ff1876df09ba5957e6cbaea87307 SHA512 89ad034f4f41faa3adae86452ae8f87eb77e91527943c4289351255098df67518723f8308a23235972b2df002d2b37d451743628d860e37086dc039a17718189
 DIST gleam-1.4.0-crates.tar.xz 42395452 BLAKE2B 36733afeda26214d4d5078824fe46a7c531b73875fd265727f1e363d799accd0b4e4401798e81ef4c60dba6401e00a5df63ed54fa424d4b7a395ee07a0124676 SHA512 5996bf3e4b11d95c05de9fe02e0f2ea8ca195931098e897ee74cb96515b81cadf7e46bd566d895d79d83ac71058a05a75b2f4a60da6ff9c6e0ad9dd0332daf3a
 DIST gleam-1.4.1.tar.gz 1024265 BLAKE2B c1e37d4ba261d94d2131ab79f24859cbad0a465b967c9231d991ed0640cbed3be9fbae0b693b73020ffb56346f77e313420bb1c3c4c90e7b4d0807c400008464 SHA512 ea8dbab041f3dc480c408595b9adf4fc9a588f8438c98b5c7234d735c3b0ad98fe556d4a0258a663b322275212a5f5dbc48637e9d8d557915630dae85904a5cd
-EBUILD gleam-1.4.1.ebuild 1069 BLAKE2B 5361603890ad0b12cadbb93d300c7558128a825ee105d73112873e306b548416194d8f7845f7408107fa8505b61fe3de436cd8d8929cdbe64ac1fb861fd02bd1 SHA512 3df007190721bce286c3cec05e5e0ffd6a48f9d2e4f20da947718c70852e9d01054c42700c18f934ee4f7bf13622546b205380631757cc6eb8ce497acf1cb8e3
+EBUILD gleam-1.4.1-r1.ebuild 1069 BLAKE2B 5361603890ad0b12cadbb93d300c7558128a825ee105d73112873e306b548416194d8f7845f7408107fa8505b61fe3de436cd8d8929cdbe64ac1fb861fd02bd1 SHA512 3df007190721bce286c3cec05e5e0ffd6a48f9d2e4f20da947718c70852e9d01054c42700c18f934ee4f7bf13622546b205380631757cc6eb8ce497acf1cb8e3
 MISC metadata.xml 339 BLAKE2B 75c47a1669f737b04e1ca54cb3d222f84f408ad4d24ae8c505dd0d6644b4c0069618cb8ef7f5c773f271c3ac1ae8d6a625e0a4cabadbf23b9eae0c9ab149d3cd SHA512 5f769e170ffff7a528f5de910ba8ff1c525214357e1e421c2b6a922700ef77271b91687c18708787195d6b28179a95dc171082c1e94291bc9fef8771fb7c7086
diff --git a/dev-lang/gleam/gleam-1.4.1.ebuild b/dev-lang/gleam/gleam-1.4.1-r1.ebuild
index 7151240a5284..7151240a5284 100644
--- a/dev-lang/gleam/gleam-1.4.1.ebuild
+++ b/dev-lang/gleam/gleam-1.4.1-r1.ebuild
diff --git a/dev-lang/gnat-gpl/Manifest b/dev-lang/gnat-gpl/Manifest
index 7ce9bc4d4ce6..3602ca3e493b 100644
--- a/dev-lang/gnat-gpl/Manifest
+++ b/dev-lang/gnat-gpl/Manifest
@@ -6,5 +6,5 @@ DIST gcc-interface-10-2021-20210519-19A75-src.tar.gz 359085 BLAKE2B 75f941a7635f
 DIST gnat-2021-20210519-19A70-src.tar.gz 8765762 BLAKE2B ef48f54c6109566e37bfa5dee9262305d0529b3dfd333ee28bc4e66f4709a0673f673d742bc04deb15dc145404f7618d350dbdf3f2a7ab37c861e57d011946fa SHA512 3cb79be024fdd9b738d99ffc8e224d32bb382b5da2d02b97b2061a5ea58456f33d4564c92e224af2713ce15fd5481edd715e5b9a52abc74fdc142f27e103c201
 DIST gnat-gpl-2014-x86-linux-bin.tar.gz 233049287 BLAKE2B 2e8bab113f6a319533ec12fdf71c481f72aee227c22bd0cc42a53bd727b323caba1e7b6298053db8b4d3016236b31649b0b255f4ebcbb81a08a69f29f78f13fc SHA512 ac7f53fb4bd71b0e8fbd62abc45de76f7f8f2f405b80e9b60b4b65a6cef6ee98e3b06848e4b752af3c8268237e5a0529cf6145ebc5b33cd6e5cf4928d85f5be2
 DIST gnat-gpl-2014-x86_64-linux-bin.tar.gz 236253400 BLAKE2B c1db70db9442ba24688b8e323d5a02e2e9707ba1f02835ea551038d0a09aafede93a224091e5186f2f2a9d0f96144027af2184ee05ca1c19cc997a6cf3902df7 SHA512 5e40a251baac3d0ace78352956ca21a7d294d902d344a9ed7a8d376e900468c283721ebfb773adfedbf4d623ace02536505c0147815a0c1908933ad611ea085e
-EBUILD gnat-gpl-2021-r5.ebuild 5041 BLAKE2B a2481f15f4167fe9ddb0f9d2735b8f4e336cb521846398f3cd6afae4620b01d61bfda4a9d698e7664f5bb7c202b0f158438a191abc77324beadd786eefe8af90 SHA512 a657eb8fe634fbc049f7dbe229e07a540a48221da87cd2cbf2f7728f4fbb407e6499d2574c5c6a561444745f124b52f81bf76cd036a46d648dd3121a47fd7f6a
+EBUILD gnat-gpl-2021-r5.ebuild 5040 BLAKE2B 3c93d463f795bc893321c2a09ef82915e4cb408b5701bf72e4285d3bbfe8ea0f8e27372e8dbe28ee2d9fafea0c106f5c4787f007d8023eb5606cb24202046776 SHA512 3f8951adfa139a5816ebed9c3f74c8014083f96e717318e3c1edad426e7549ce9a2f061ba2bbd74af5f59d7ac5f1aa97222787052681ccde612e72c845fb435a
 MISC metadata.xml 2123 BLAKE2B 37449000a0a107ef9cddeedb867b54709108ea3ee5be59aa5300cdccb1e6a55ddf54df3cb35b9d198ee8d251ede8622d29a0f73800227faca2f621e7a07a11bf SHA512 e979fcde61993c462b816ce1917ae801843b1f44a659342fdf5020d10eacc139681ca54f5fc80b6d70eae26bd33861f1de4cb1d2f9b0ae13446fd9a9bd5b6dff
diff --git a/dev-lang/gnat-gpl/gnat-gpl-2021-r5.ebuild b/dev-lang/gnat-gpl/gnat-gpl-2021-r5.ebuild
index 442fabf6223f..0b3ec6d0b5d2 100644
--- a/dev-lang/gnat-gpl/gnat-gpl-2021-r5.ebuild
+++ b/dev-lang/gnat-gpl/gnat-gpl-2021-r5.ebuild
@@ -39,6 +39,7 @@ inherit flag-o-matic toolchain-funcs toolchain
 
 DESCRIPTION="GNAT Ada Compiler - GPL version"
 HOMEPAGE="http://libre.adacore.com/"
+S="${WORKDIR}"/${MYP}
 
 LICENSE+=" GPL-2 GPL-3"
 KEYWORDS="amd64 x86"
@@ -48,8 +49,6 @@ RESTRICT="test"
 RDEPEND="!=sys-devel/gcc-${TOOLCHAIN_GCC_PV}*"
 BDEPEND=sys-devel/binutils
 
-S="${WORKDIR}"/${MYP}
-
 pkg_pretend() {
 	toolchain_pkg_pretend
 	if tc-is-clang; then
diff --git a/dev-lang/pypy/Manifest b/dev-lang/pypy/Manifest
index b370f9a647d7..ee16242cc74c 100644
--- a/dev-lang/pypy/Manifest
+++ b/dev-lang/pypy/Manifest
@@ -3,5 +3,5 @@ DIST pypy2.7-v7.3.17-src.tar.bz2 19907140 BLAKE2B de62ebc4e8102867effdecddca64c1
 DIST pypy3.10-gentoo-patches-7.3.17_p1.tar.xz 18104 BLAKE2B 4b6c8c012d34b7ead8f7499edbe4292f21d2d7437694341de0bfb5f74d0717a11eb1c302a60baeb3ab123851a2436657458dad47c2b86a81218eea12d6aa9344 SHA512 73e0733f07be79f444b2fbf18ca7dcad6a76368cb8c185eb630d82e6886ed909548bc1779bf618588e34a572b5d48be0f9a86fc5758d302cf3ff0e94649b4815
 DIST pypy3.10-v7.3.17-src.tar.bz2 23350562 BLAKE2B 0a7a091976b352de61057f238fa386f767dd4d2fbcdcc0b4376066c20c2ad35d3818fa6e9e163ab5fd341856802e8ad1e2891decf5948c13cdb26726cd42019e SHA512 46e30845bbc73cf56f5033a24d3583253ce198522f3a28ae4e789884063ba167d401fc08ae7fc8c7769feed9cd942a8ab38961c8b8794d7fae8f9955479faa96
 EBUILD pypy-2.7.7.3.17.ebuild 7392 BLAKE2B 78ac70ad3efed0c24bd0d1fb0082f6da376e1e97eba050d967ea49d4cd83b2e00edddcaf6faf95da7e134aca743255ce7e7adccd693d984a685fdb21458b15c6 SHA512 7fc70856f2ab6ea40710f0b0ad23ff046abb377af412536eabe75b6235fb597065dcf63597032fd27f5f596681606e68d46ca37504fef9e252557f5f663f9351
-EBUILD pypy-3.10.7.3.17_p1.ebuild 7142 BLAKE2B b5e91d74131969730bdd91d4bf2055f7e7a213d2916b27ac3fe395b563d6e2b3c5e8a5c59fea3dc8bbee196c9b6a9163037836f07ea86a4ad1bbcf31733279bd SHA512 0fc1f19af204b70f13cbf1f5e1e6d864cea64fee85a0cd41b638a75d8c2f3dc91c840406a121e64dc40ebe79dc1baf210da74fca0c011128f4e3d7b3e9fffdab
+EBUILD pypy-3.10.7.3.17_p1.ebuild 7140 BLAKE2B db6bfe1c3d44cdf9f4a1639c6bf8e35253c0ac3687f3a1315bfd52ca82c4a6fa0c3626c2aad938f8bcf2b2b6851db6fa1ed5f1847a891a08800040e0e4c27ea4 SHA512 efe64c07cfbdcb2fafbbbb93adeda1fd3ba22164130cb908d8bf26d0d82713fca179463f44673fb262573dca96a468573b53e67ab97d3f51563e23888afadfff
 MISC metadata.xml 1124 BLAKE2B f1d09d26175cf20d1440a9a83352cf6f2f2e514d35d95116caf4a5ee86547f0165a6369e7a6b129ded75d28ba5a0c1c8f4da7d664d7c1e3c1e95153593057b3c SHA512 ae95400c9a1efc75372201c2353b128302355d1d087094953d73c325fa72bc24662d31c7287ae6a2583448ac345bb60744ac19391e07f8da8ef0327627e0e462
diff --git a/dev-lang/pypy/pypy-3.10.7.3.17_p1.ebuild b/dev-lang/pypy/pypy-3.10.7.3.17_p1.ebuild
index 788436ddabcc..798985845580 100644
--- a/dev-lang/pypy/pypy-3.10.7.3.17_p1.ebuild
+++ b/dev-lang/pypy/pypy-3.10.7.3.17_p1.ebuild
@@ -28,7 +28,7 @@ LICENSE="MIT"
 # pypy3 -c 'import sysconfig; print(sysconfig.get_config_var("SOABI"))'
 # also check pypy/interpreter/pycode.py -> pypy_incremental_magic
 SLOT="${PYVER}/pypy310-pp73-384"
-KEYWORDS="~amd64 ~arm64 ~ppc64 ~x86 ~amd64-linux ~x86-linux"
+KEYWORDS="amd64 ~arm64 ~ppc64 x86 ~amd64-linux ~x86-linux"
 IUSE="+ensurepip gdbm +jit ncurses sqlite +symlink +test-install tk"
 # many tests are failing upstream
 # see https://buildbot.pypy.org/summary?branch=py${PYVER}
diff --git a/dev-lang/ruby/Manifest b/dev-lang/ruby/Manifest
index 4c67b7846208..7f8151ca4ccf 100644
--- a/dev-lang/ruby/Manifest
+++ b/dev-lang/ruby/Manifest
@@ -30,11 +30,11 @@ DIST ruby-3.3.6.tar.xz 16398228 BLAKE2B 7e2fb58ca1f5ee7ab9c2fd7b24fdbf9eef980532
 EBUILD ruby-3.1.4-r3.ebuild 8517 BLAKE2B 8a89694e604a5c61c51154246598a4f57465c6f4443ae0c103e8ee6825a6f7ad2709a6bfd3e12fc141321a5fbc7fd549ffeca7d75d4db79d564483494285f9b3 SHA512 0a422dfee5abcce9fd9c27009370c92c9ca58eeb129a2e2384eb6747f83a6e7418e0de58d562c175fea52ab7519bc2105ae64925e845fda169482b3be26cf211
 EBUILD ruby-3.1.5.ebuild 8842 BLAKE2B 322f5da3ded0e48fbb70d222d0df8a64c6c91e1445e710ddddfbb24afcbd2f4ba6ce563da93c89477efd4f940d82a182ec5e9617132c446155fda021a71ac70c SHA512 1e182e9b425f2c92fb915c89e10e745c2c06ee010dd5f4477a21a42909ac4672e8fb2600323e5c781f564f4d7377ecd997d83860a0b59294d3bc6c184291bcc1
 EBUILD ruby-3.1.6-r1.ebuild 8913 BLAKE2B e3efb05d75ac99b2f4b7b15a987e799ea949bf372eb9893d285868e3e616807479faeaf236fa7c874bbc93d2dda002ef061d97ff46ff7652158dfb3f90ee82dd SHA512 ab9f147269222231d65c92469573a1261a4ebe68a994b38c4eced06e5cb204d991a345986c31440198a96adef24e05ca905839bd218e66053c93e94bbe36fe95
-EBUILD ruby-3.2.4-r1.ebuild 9892 BLAKE2B 696d341ade6acdd7bd06976cab37c3d1d80baf529ef8f2391ae1bb9ba1425177d3aed10378dbb1a450a391b6682a3b5756ddfc51d852947253d1475995f24388 SHA512 0563553a5d2a15e2d3eebbe466f50e59840cfa60431840208340bdc0f03c9b239ba4e20e2bb690b176d1ff7475834ceb7c913a7e010ebe6105b5d5630aaa2039
-EBUILD ruby-3.2.4.ebuild 9742 BLAKE2B 174541eaf3f3d584a0ab60788bdff59b2aac6d20d26ee5cc4079a6e4c5dd5860ff05bc4d94d86fc9a669aaa88cc4e0fea70e3b0fd4a25881e2e5039f355224cc SHA512 00210ee3cd7b54cfd8122b77bccc7c6dde0c42fe07246e26918f5c343a8ebf893c375f08ca90042774c63121c20d1b3cb1de795f6956a29aa0e6691cd0326cef
-EBUILD ruby-3.2.5.ebuild 9423 BLAKE2B dc3283b4d8c20b5229f37fd5c3aaf96149f3b3586bc69b2641987527eab960bba429bbc8634cf54504db2cecd27330e1c1f11ae0e33fceeeb24e5997b62ef32d SHA512 5b4db3b8884098a7d76565e90b0e831cbcdff19fbcc5efa1b59431c34d3332c8591d7d79dd4cea93d79148c8dd59c15bb3ad600fda66d028796d360b21b46b10
-EBUILD ruby-3.2.6.ebuild 9429 BLAKE2B 55f93dd24fed1f5cccfd6e3667197d3e131ec8e860628ee805a533efc4bd094938cf1a77d34d6ce2c53bd85840958e751f2139d811cea20b593d574f53d02537 SHA512 53f44e1602e44d92aaa8aaa8b4e192ff390fd4d18c99f01c28c558afc3af489ec90f056bf0b379a35cd6d1b5162be5eefc87377d688a1e977d01526b9eada946
-EBUILD ruby-3.3.4-r1.ebuild 9280 BLAKE2B d97425d417d9a5b6b3af2a1da9fc55b80d8830eb7dc28365cc1c815d6bb2339ab92b9b427f993b2934758081f743d2754defd03284c36e4e1003edfe22f6bbd2 SHA512 6e8d50eaa87948d36f08f34bf65c92b8f7ff31fe8458aa17181725785a7eed2c98cb52346e6256a060124c99b8f39cd889298b94875b8feacefa0e2931914388
-EBUILD ruby-3.3.5.ebuild 9280 BLAKE2B d97425d417d9a5b6b3af2a1da9fc55b80d8830eb7dc28365cc1c815d6bb2339ab92b9b427f993b2934758081f743d2754defd03284c36e4e1003edfe22f6bbd2 SHA512 6e8d50eaa87948d36f08f34bf65c92b8f7ff31fe8458aa17181725785a7eed2c98cb52346e6256a060124c99b8f39cd889298b94875b8feacefa0e2931914388
-EBUILD ruby-3.3.6.ebuild 9476 BLAKE2B 5becaf1a2d8f6ff158eff3aed381739c7f7a3df2634fed637504a26b9031e479e6cd011db728b985e141780cc200d753549da8ae498e89df759f87891e2c4cbd SHA512 30aae814f559eaf7ec716208edc11606218fcf80cf07676c625c1306888ce45e05b3326d58a1c527b09b7ceb8e054a961d48c281804155e5ebdffae0ee5126b3
+EBUILD ruby-3.2.4-r2.ebuild 9788 BLAKE2B 073e9cbcef0904b9a0b02036da3b9df8f98b9033d759116939e47625f14ee8ef27da0c9f4122a596eaded97114a168750a5a2c7ae72b27612852e9fe31879ea2 SHA512 0c5bb6a2072b22c654c1274752dce31541c81fddd7bdc5674e0e05271c69891540310d2d2ddfcb8fc64fbba6b712e9d5f932fc8e1cf4793555e4f41cc6e5ee61
+EBUILD ruby-3.2.4-r3.ebuild 9938 BLAKE2B 415b6ecd80cc7a1714bafba54bed731a454bbdb03ceeb1fff73f52989282e1a56eb826cdc069019889cc4056ceebc20d40951279d1feb20b00088ee9f4dc21b3 SHA512 7402f3660abdf40c2b2329421ec959ba3da50f9a495a7de524e2d8412d20a866dfe82694cf46d19be41e74e60c52ebe754b355ccf79b1fd618f4195038a593cf
+EBUILD ruby-3.2.5-r1.ebuild 9469 BLAKE2B a68bd83f4abdf50b739bda749e0d3038d03a08a580524ed348d7ca573c109960f69c784d27ee34434d2503d8d6bd889e8dbeb72ed91d7d59a0a93f914cd8138f SHA512 dcc6bb8ff516a69fb6958b91a0241bd3c2323e224931996e9a3ab88b0d28163c7a553b23ebd9c8db872daf8dc944824b626b74495ac9441ba2ab6d5b3e64d29b
+EBUILD ruby-3.2.6-r1.ebuild 9475 BLAKE2B 9eee6a906e478ef68836ef00cf19b50b498a3403e0a58f47e75d6f4011fc98793a304484f9f31cfb7285c0c98d9890abde1b422d85d157605ab8328b0b08bc7a SHA512 140c7a37431383d121e0784f68cbcddc63dc12c47c1be64d407518c0a15ec5daeb6cb61bf71317fe5ef5bae95f2fba7affea4cb555097c8288fc09f3e521f0dd
+EBUILD ruby-3.3.4-r2.ebuild 9342 BLAKE2B 1fb9189635dda8aeec17105c784b4fa5b4158853c2d4a51a02f640067b9d6b5ed9e268a99df931f197bb877c6c38b5eea7975775235d3b19909a74ab36339844 SHA512 019a14c2ba878385d12ef1fcfa00c4dcb09c504c5d36817822989b883eb76eca17558cd78548c3777b740346c0db570c1b8c1cc77c593d557685ff1f60fbf19a
+EBUILD ruby-3.3.5-r1.ebuild 9342 BLAKE2B 1fb9189635dda8aeec17105c784b4fa5b4158853c2d4a51a02f640067b9d6b5ed9e268a99df931f197bb877c6c38b5eea7975775235d3b19909a74ab36339844 SHA512 019a14c2ba878385d12ef1fcfa00c4dcb09c504c5d36817822989b883eb76eca17558cd78548c3777b740346c0db570c1b8c1cc77c593d557685ff1f60fbf19a
+EBUILD ruby-3.3.6-r1.ebuild 9538 BLAKE2B 3033453c764967229bc140d0851881a471c6fb02a8366657787b4b9cb139777443ca9fd50392ffca90b3ff1b91f51ba526bd1a58d4fcd2b471c297fe201ea252 SHA512 d979cd2df7949b4fe22bb5ca28c9a39e6256df024dab2c906d9abb1dec7e843b2c0150d875b27ac07936239a9583cb0b8429105a3436be8f4858a6fecd6789cd
 MISC metadata.xml 504 BLAKE2B 49be2bb1dba034b23a8294cca0e5419099b487973a43db31c0edc4b9a2a08eb1b54437b0c7e6a9e6d8a5c0145cd73464f830ec04ca62540416c32b2d094cdd63 SHA512 e9991c588874e36f6a0abb12125bcd3f2b1e787df62d9f7089053959286b56676a9f35c7e82116274f169bfa22359be8df59fca6454be559e7669d2e78dc4c22
diff --git a/dev-lang/ruby/ruby-3.2.4.ebuild b/dev-lang/ruby/ruby-3.2.4-r2.ebuild
index 524d5af27834..229a1aacf8e0 100644
--- a/dev-lang/ruby/ruby-3.2.4.ebuild
+++ b/dev-lang/ruby/ruby-3.2.4-r2.ebuild
@@ -3,28 +3,30 @@
 
 EAPI=8
 
-inherit autotools flag-o-matic multiprocessing
+RUST_OPTIONAL="yes"
 
-MY_P="${PN}-$(ver_cut 1-3)"
-S=${WORKDIR}/${MY_P}
+inherit autotools flag-o-matic multiprocessing rust
 
-SLOT=$(ver_cut 1-2)
-MY_SUFFIX=$(ver_rs 1 '' ${SLOT})
-RUBYVERSION=${SLOT}.0
+MY_P="${PN}-$(ver_cut 1-3)"
 
 DESCRIPTION="An object-oriented scripting language"
 HOMEPAGE="https://www.ruby-lang.org/"
 SRC_URI="https://cache.ruby-lang.org/pub/ruby/${SLOT}/${MY_P}.tar.xz"
+S=${WORKDIR}/${MY_P}
 
 LICENSE="|| ( Ruby-BSD BSD-2 )"
+SLOT=$(ver_cut 1-2)
+MY_SUFFIX=$(ver_rs 1 '' ${SLOT})
+RUBYVERSION=${SLOT}.0
+
 KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
-IUSE="berkdb debug doc examples gdbm ipv6 jemalloc jit socks5 +ssl static-libs systemtap tk valgrind xemacs"
+IUSE="berkdb debug doc examples gdbm jemalloc jit socks5 +ssl static-libs systemtap tk valgrind xemacs"
 
 RDEPEND="
 	berkdb? ( sys-libs/db:= )
 	gdbm? ( sys-libs/gdbm:= )
 	jemalloc? ( dev-libs/jemalloc:= )
-	jit? ( >=virtual/rust-1.58.1 )
+	jit? ( ${RUST_DEPEND} )
 	ssl? (
 		dev-libs/openssl:0=
 	)
@@ -76,6 +78,10 @@ PDEPEND="
 	xemacs? ( app-xemacs/ruby-modes )
 "
 
+pkg_setup() {
+	use jit && rust_pkg_setup
+}
+
 src_prepare() {
 	eapply "${FILESDIR}"/"${SLOT}"/010*.patch
 	eapply "${FILESDIR}"/"${SLOT}"/011*.patch
@@ -180,7 +186,7 @@ src_configure() {
 	fi
 
 	# ipv6 hack, bug 168939. Needs --enable-ipv6.
-	use ipv6 || myconf="${myconf} --with-lookup-order-hack=INET"
+	myconf="${myconf} --with-lookup-order-hack=INET"
 
 	# Determine which modules *not* to build depending in the USE flags.
 	if ! use berkdb ; then
diff --git a/dev-lang/ruby/ruby-3.2.4-r1.ebuild b/dev-lang/ruby/ruby-3.2.4-r3.ebuild
index 7152cb0f52fc..1fd84f4d54ed 100644
--- a/dev-lang/ruby/ruby-3.2.4-r1.ebuild
+++ b/dev-lang/ruby/ruby-3.2.4-r3.ebuild
@@ -3,28 +3,30 @@
 
 EAPI=8
 
-inherit autotools flag-o-matic multiprocessing
+RUST_OPTIONAL="yes"
 
-MY_P="${PN}-$(ver_cut 1-3)"
-S=${WORKDIR}/${MY_P}
+inherit autotools flag-o-matic multiprocessing rust
 
-SLOT=$(ver_cut 1-2)
-MY_SUFFIX=$(ver_rs 1 '' ${SLOT})
-RUBYVERSION=${SLOT}.0
+MY_P="${PN}-$(ver_cut 1-3)"
 
 DESCRIPTION="An object-oriented scripting language"
 HOMEPAGE="https://www.ruby-lang.org/"
 SRC_URI="https://cache.ruby-lang.org/pub/ruby/${SLOT}/${MY_P}.tar.xz"
+S=${WORKDIR}/${MY_P}
 
 LICENSE="|| ( Ruby-BSD BSD-2 )"
+SLOT=$(ver_cut 1-2)
+MY_SUFFIX=$(ver_rs 1 '' ${SLOT})
+RUBYVERSION=${SLOT}.0
+
 KEYWORDS="~alpha amd64 ~arm ~arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
-IUSE="berkdb debug doc examples gdbm ipv6 jemalloc jit socks5 +ssl static-libs systemtap tk valgrind xemacs"
+IUSE="berkdb debug doc examples gdbm jemalloc jit socks5 +ssl static-libs systemtap tk valgrind xemacs"
 
 RDEPEND="
 	berkdb? ( sys-libs/db:= )
 	gdbm? ( sys-libs/gdbm:= )
 	jemalloc? ( dev-libs/jemalloc:= )
-	jit? ( >=virtual/rust-1.58.1 )
+	jit? ( ${RUST_DEPEND} )
 	ssl? (
 		dev-libs/openssl:0=
 	)
@@ -76,6 +78,10 @@ PDEPEND="
 	xemacs? ( app-xemacs/ruby-modes )
 "
 
+pkg_setup() {
+	use jit && rust_pkg_setup
+}
+
 src_prepare() {
 	eapply "${FILESDIR}"/"${SLOT}"/010*.patch
 	eapply "${FILESDIR}"/"${SLOT}"/011*.patch
@@ -184,7 +190,7 @@ src_configure() {
 	fi
 
 	# ipv6 hack, bug 168939. Needs --enable-ipv6.
-	use ipv6 || myconf="${myconf} --with-lookup-order-hack=INET"
+	myconf="${myconf} --with-lookup-order-hack=INET"
 
 	# Determine which modules *not* to build depending in the USE flags.
 	if ! use berkdb ; then
diff --git a/dev-lang/ruby/ruby-3.2.5.ebuild b/dev-lang/ruby/ruby-3.2.5-r1.ebuild
index a7a40d60ef35..8216cc259a34 100644
--- a/dev-lang/ruby/ruby-3.2.5.ebuild
+++ b/dev-lang/ruby/ruby-3.2.5-r1.ebuild
@@ -3,28 +3,30 @@
 
 EAPI=8
 
-inherit autotools flag-o-matic multiprocessing
+RUST_OPTIONAL="yes"
 
-MY_P="${PN}-$(ver_cut 1-3)"
-S=${WORKDIR}/${MY_P}
+inherit autotools flag-o-matic multiprocessing rust
 
-SLOT=$(ver_cut 1-2)
-MY_SUFFIX=$(ver_rs 1 '' ${SLOT})
-RUBYVERSION=${SLOT}.0
+MY_P="${PN}-$(ver_cut 1-3)"
 
 DESCRIPTION="An object-oriented scripting language"
 HOMEPAGE="https://www.ruby-lang.org/"
 SRC_URI="https://cache.ruby-lang.org/pub/ruby/${SLOT}/${MY_P}.tar.xz"
+S=${WORKDIR}/${MY_P}
 
 LICENSE="|| ( Ruby-BSD BSD-2 )"
+SLOT=$(ver_cut 1-2)
+MY_SUFFIX=$(ver_rs 1 '' ${SLOT})
+RUBYVERSION=${SLOT}.0
+
 KEYWORDS="~alpha amd64 ~arm arm64 ~hppa ~loong ~mips ppc ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
-IUSE="berkdb debug doc examples gdbm ipv6 jemalloc jit socks5 +ssl static-libs systemtap tk valgrind xemacs"
+IUSE="berkdb debug doc examples gdbm jemalloc jit socks5 +ssl static-libs systemtap tk valgrind xemacs"
 
 RDEPEND="
 	berkdb? ( sys-libs/db:= )
 	gdbm? ( sys-libs/gdbm:= )
 	jemalloc? ( dev-libs/jemalloc:= )
-	jit? ( >=virtual/rust-1.58.1 )
+	jit? ( ${RUST_DEPEND} )
 	ssl? (
 		dev-libs/openssl:0=
 	)
@@ -76,6 +78,10 @@ PDEPEND="
 	xemacs? ( app-xemacs/ruby-modes )
 "
 
+pkg_setup() {
+	use jit && rust_pkg_setup
+}
+
 src_prepare() {
 	eapply "${FILESDIR}"/"${SLOT}"/010*.patch
 	eapply "${FILESDIR}"/"${SLOT}"/011*.patch
@@ -167,7 +173,7 @@ src_configure() {
 	fi
 
 	# ipv6 hack, bug 168939. Needs --enable-ipv6.
-	use ipv6 || myconf="${myconf} --with-lookup-order-hack=INET"
+	myconf="${myconf} --with-lookup-order-hack=INET"
 
 	# Determine which modules *not* to build depending in the USE flags.
 	if ! use berkdb ; then
diff --git a/dev-lang/ruby/ruby-3.2.6.ebuild b/dev-lang/ruby/ruby-3.2.6-r1.ebuild
index 988bb6012c76..c5c91c8a1c6c 100644
--- a/dev-lang/ruby/ruby-3.2.6.ebuild
+++ b/dev-lang/ruby/ruby-3.2.6-r1.ebuild
@@ -3,28 +3,30 @@
 
 EAPI=8
 
-inherit autotools flag-o-matic multiprocessing
+RUST_OPTIONAL="yes"
 
-MY_P="${PN}-$(ver_cut 1-3)"
-S=${WORKDIR}/${MY_P}
+inherit autotools flag-o-matic multiprocessing rust
 
-SLOT=$(ver_cut 1-2)
-MY_SUFFIX=$(ver_rs 1 '' ${SLOT})
-RUBYVERSION=${SLOT}.0
+MY_P="${PN}-$(ver_cut 1-3)"
 
 DESCRIPTION="An object-oriented scripting language"
 HOMEPAGE="https://www.ruby-lang.org/"
 SRC_URI="https://cache.ruby-lang.org/pub/ruby/${SLOT}/${MY_P}.tar.xz"
+S=${WORKDIR}/${MY_P}
 
 LICENSE="|| ( Ruby-BSD BSD-2 )"
+SLOT=$(ver_cut 1-2)
+MY_SUFFIX=$(ver_rs 1 '' ${SLOT})
+RUBYVERSION=${SLOT}.0
+
 KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
-IUSE="berkdb debug doc examples gdbm ipv6 jemalloc jit socks5 +ssl static-libs systemtap tk valgrind xemacs"
+IUSE="berkdb debug doc examples gdbm jemalloc jit socks5 +ssl static-libs systemtap tk valgrind xemacs"
 
 RDEPEND="
 	berkdb? ( sys-libs/db:= )
 	gdbm? ( sys-libs/gdbm:= )
 	jemalloc? ( dev-libs/jemalloc:= )
-	jit? ( >=virtual/rust-1.58.1 )
+	jit? ( ${RUST_DEPEND} )
 	ssl? (
 		dev-libs/openssl:0=
 	)
@@ -76,6 +78,10 @@ PDEPEND="
 	xemacs? ( app-xemacs/ruby-modes )
 "
 
+pkg_setup() {
+	use jit && rust_pkg_setup
+}
+
 src_prepare() {
 	eapply "${FILESDIR}"/"${SLOT}"/010*.patch
 	eapply "${FILESDIR}"/"${SLOT}"/011*.patch
@@ -167,7 +173,7 @@ src_configure() {
 	fi
 
 	# ipv6 hack, bug 168939. Needs --enable-ipv6.
-	use ipv6 || myconf="${myconf} --with-lookup-order-hack=INET"
+	myconf="${myconf} --with-lookup-order-hack=INET"
 
 	# Determine which modules *not* to build depending in the USE flags.
 	if ! use berkdb ; then
diff --git a/dev-lang/ruby/ruby-3.3.5.ebuild b/dev-lang/ruby/ruby-3.3.4-r2.ebuild
index cac3085b6240..a48e45203585 100644
--- a/dev-lang/ruby/ruby-3.3.5.ebuild
+++ b/dev-lang/ruby/ruby-3.3.4-r2.ebuild
@@ -3,21 +3,22 @@
 
 EAPI=8
 
-inherit autotools flag-o-matic multiprocessing
+RUST_OPTIONAL="yes"
 
-DESCRIPTION="An object-oriented scripting language"
-HOMEPAGE="https://www.ruby-lang.org/"
+inherit autotools flag-o-matic multiprocessing rust
 
 MY_P="${PN}-$(ver_cut 1-3)"
+
+DESCRIPTION="An object-oriented scripting language"
+HOMEPAGE="https://www.ruby-lang.org/"
+SRC_URI="https://cache.ruby-lang.org/pub/ruby/${SLOT}/${MY_P}.tar.xz"
 S=${WORKDIR}/${MY_P}
 
+LICENSE="|| ( Ruby-BSD BSD-2 )"
 SLOT=$(ver_cut 1-2)
 MY_SUFFIX=$(ver_rs 1 '' ${SLOT})
 RUBYVERSION=${SLOT}.0
 
-SRC_URI="https://cache.ruby-lang.org/pub/ruby/${SLOT}/${MY_P}.tar.xz"
-
-LICENSE="|| ( Ruby-BSD BSD-2 )"
 KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
 IUSE="berkdb debug doc examples gdbm jemalloc jit socks5 +ssl static-libs systemtap tk valgrind xemacs"
 
@@ -25,7 +26,7 @@ RDEPEND="
 	berkdb? ( sys-libs/db:= )
 	gdbm? ( sys-libs/gdbm:= )
 	jemalloc? ( dev-libs/jemalloc:= )
-	jit? ( >=virtual/rust-1.58.1 )
+	jit? ( ${RUST_DEPEND} )
 	ssl? (
 		dev-libs/openssl:0=
 	)
@@ -77,6 +78,10 @@ PDEPEND="
 	xemacs? ( app-xemacs/ruby-modes )
 "
 
+pkg_setup() {
+	use jit && rust_pkg_setup
+}
+
 src_prepare() {
 	eapply "${FILESDIR}"/"${SLOT}"/010*.patch
 	eapply "${FILESDIR}"/"${SLOT}"/013*.patch
diff --git a/dev-lang/ruby/ruby-3.3.4-r1.ebuild b/dev-lang/ruby/ruby-3.3.5-r1.ebuild
index cac3085b6240..a48e45203585 100644
--- a/dev-lang/ruby/ruby-3.3.4-r1.ebuild
+++ b/dev-lang/ruby/ruby-3.3.5-r1.ebuild
@@ -3,21 +3,22 @@
 
 EAPI=8
 
-inherit autotools flag-o-matic multiprocessing
+RUST_OPTIONAL="yes"
 
-DESCRIPTION="An object-oriented scripting language"
-HOMEPAGE="https://www.ruby-lang.org/"
+inherit autotools flag-o-matic multiprocessing rust
 
 MY_P="${PN}-$(ver_cut 1-3)"
+
+DESCRIPTION="An object-oriented scripting language"
+HOMEPAGE="https://www.ruby-lang.org/"
+SRC_URI="https://cache.ruby-lang.org/pub/ruby/${SLOT}/${MY_P}.tar.xz"
 S=${WORKDIR}/${MY_P}
 
+LICENSE="|| ( Ruby-BSD BSD-2 )"
 SLOT=$(ver_cut 1-2)
 MY_SUFFIX=$(ver_rs 1 '' ${SLOT})
 RUBYVERSION=${SLOT}.0
 
-SRC_URI="https://cache.ruby-lang.org/pub/ruby/${SLOT}/${MY_P}.tar.xz"
-
-LICENSE="|| ( Ruby-BSD BSD-2 )"
 KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
 IUSE="berkdb debug doc examples gdbm jemalloc jit socks5 +ssl static-libs systemtap tk valgrind xemacs"
 
@@ -25,7 +26,7 @@ RDEPEND="
 	berkdb? ( sys-libs/db:= )
 	gdbm? ( sys-libs/gdbm:= )
 	jemalloc? ( dev-libs/jemalloc:= )
-	jit? ( >=virtual/rust-1.58.1 )
+	jit? ( ${RUST_DEPEND} )
 	ssl? (
 		dev-libs/openssl:0=
 	)
@@ -77,6 +78,10 @@ PDEPEND="
 	xemacs? ( app-xemacs/ruby-modes )
 "
 
+pkg_setup() {
+	use jit && rust_pkg_setup
+}
+
 src_prepare() {
 	eapply "${FILESDIR}"/"${SLOT}"/010*.patch
 	eapply "${FILESDIR}"/"${SLOT}"/013*.patch
diff --git a/dev-lang/ruby/ruby-3.3.6.ebuild b/dev-lang/ruby/ruby-3.3.6-r1.ebuild
index 9ea8087ae9f1..7680cec58196 100644
--- a/dev-lang/ruby/ruby-3.3.6.ebuild
+++ b/dev-lang/ruby/ruby-3.3.6-r1.ebuild
@@ -3,21 +3,22 @@
 
 EAPI=8
 
-inherit autotools flag-o-matic multiprocessing
+RUST_OPTIONAL="yes"
 
-DESCRIPTION="An object-oriented scripting language"
-HOMEPAGE="https://www.ruby-lang.org/"
+inherit autotools flag-o-matic multiprocessing rust
 
 MY_P="${PN}-$(ver_cut 1-3)"
+
+DESCRIPTION="An object-oriented scripting language"
+HOMEPAGE="https://www.ruby-lang.org/"
+SRC_URI="https://cache.ruby-lang.org/pub/ruby/${SLOT}/${MY_P}.tar.xz"
 S=${WORKDIR}/${MY_P}
 
+LICENSE="|| ( Ruby-BSD BSD-2 )"
 SLOT=$(ver_cut 1-2)
 MY_SUFFIX=$(ver_rs 1 '' ${SLOT})
 RUBYVERSION=${SLOT}.0
 
-SRC_URI="https://cache.ruby-lang.org/pub/ruby/${SLOT}/${MY_P}.tar.xz"
-
-LICENSE="|| ( Ruby-BSD BSD-2 )"
 KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
 IUSE="berkdb debug doc examples gdbm jemalloc jit socks5 +ssl static-libs systemtap tk valgrind xemacs"
 
@@ -25,7 +26,7 @@ RDEPEND="
 	berkdb? ( sys-libs/db:= )
 	gdbm? ( sys-libs/gdbm:= )
 	jemalloc? ( dev-libs/jemalloc:= )
-	jit? ( >=virtual/rust-1.58.1 )
+	jit? ( ${RUST_DEPEND} )
 	ssl? (
 		dev-libs/openssl:0=
 	)
@@ -77,6 +78,10 @@ PDEPEND="
 	xemacs? ( app-xemacs/ruby-modes )
 "
 
+pkg_setup() {
+	use jit && rust_pkg_setup
+}
+
 src_prepare() {
 	eapply "${FILESDIR}"/"${SLOT}"/010*.patch
 	eapply "${FILESDIR}"/"${SLOT}"/013*.patch
diff --git a/dev-lang/rust-bin/Manifest b/dev-lang/rust-bin/Manifest
index 516e54bbd50a..6a5ff7ae31b5 100644
--- a/dev-lang/rust-bin/Manifest
+++ b/dev-lang/rust-bin/Manifest
@@ -276,12 +276,20 @@ DIST rust-src-1.79.0.tar.xz 2855740 BLAKE2B 2701e3de018e044b5cc83b8d1b8e509127e3
 DIST rust-src-1.80.1.tar.xz 2870456 BLAKE2B 9096fab01b38cc3ea2a32a2ab2e9052e5988d25e92965ebf174c4823c7b3c722196ca25e0dabcfc6db208d1c07434f06594d85fc673b6b9d4e0070ed445215e2 SHA512 bb9fdc593f33c6d94c28569a1820f0fd2413c31e650ddf82903214845adec664cac9d7b10b07e096a36432dd815de96c6aec81709ed13e99f381cd53cb87fd89
 DIST rust-src-1.81.0.tar.xz 2901440 BLAKE2B 7ad2855c21728cc323108f7e45416a425a222e550c132818b302dc2b9fabc1281e560b0f097e1fc41e682f52b4524c69737096e12cc9e97a677828efab96dc2b SHA512 d38b1afc17a4cc7ba67d2e1b7d3dfbcc2a61ad96e87b130064d6788538817c27bce06c9fd7a4733de5b5862ff5f6aa441bf71ebaaae9ff80a86c354a6ec05e14
 DIST rust-src-1.82.0.tar.xz 2966368 BLAKE2B 4162e7393ac21a095ac1541ea7b62fafa561ce2153bdd2b3723d0f2e0130fb2fb1325ac8583d87d64b6cf6b76400d12aaac144c781e89a177483adb46854c81b SHA512 4f7817eb16dbddf15ab09206738569370c42abe117086b085a7cc8f7174f9c2b42571707558642c72597236610eeeca32575b665acbc2cbc4f7709e624c16cc4
+EBUILD rust-bin-1.71.1-r100.ebuild 7081 BLAKE2B 2e5868b6d0d2470e07bdda3fd1e88ee90a9d31c906ba45f7b6f5ef612a9056ec61317447b8713b7a33a5c4c5d97a440a7595060313552e0f183d1aaa386f4018 SHA512 b781bbf37118522a332004a13d1c5c5033346de954744f05934f37b910cb653c4bdba6b575da8991bd1ab0b59e7befcd842d47f79ffe700838bf3413b81e82a6
 EBUILD rust-bin-1.71.1.ebuild 6976 BLAKE2B ab06c32b5859fd3898d88dc3d296d890556849078f1cfb2cb76a56d1437abbde406ef394b07e410ca0965671714b45b8eae832b93e2911ac8bc2aed2d84dee23 SHA512 aeb25676217956ddb976237888c3b6a9891360c39b9acb802e8e9070881d16b34f3dc5c2b884e21554a9986913f8443ffa4aa9cbdaff6ca5600abad3f298c4c7
+EBUILD rust-bin-1.74.1-r100.ebuild 7424 BLAKE2B 0ef1de4d798e52defd93d0975dcfe880e1fd8c8c82e25a2034369fdd2610d4e763c6bdfd0163bd60827be737e76173d53333e2b07d35b3230b8a9295ea6ef30c SHA512 bafd7c148d5b4dcb4da87ffd892770cbd335bf7a83c5a4433418eeac4925def1d780dd76b074a03852941950f7468a9526896768f97acfc6726fa66d486119e2
 EBUILD rust-bin-1.74.1.ebuild 7319 BLAKE2B 49f5ea1f31bf27205c21ab47681ea0cfd0eb834533b47fd85564ae2d8ed012b5f3b50458c75b5fd73817ee067f255481ebb592b173e0a7e7d8e0be1da3dfd183 SHA512 ddcaa062ce63cd66fd3f633a4866957f7ad85f67ca239a70f4719a8cf1c5de5a8b181ea5322e1733c1e158241dcdbf9ae126bc4fdb1e96c9d1472d8cfb5495b1
+EBUILD rust-bin-1.75.0-r100.ebuild 7424 BLAKE2B c38f5d295544de5b414e48b4280f8d14cc3a680ccd70e4e494cc332fa8844e823ee4b5a0c665a51a69c30f3b2afd6b3a47b024d020e3fcb768ef51fefe0af2cd SHA512 fac4ff84e6fdb5bc1a00a7b440150b5cb5e894eb9ffae4d558b30e4e26f5cac1fb92a751f1a409a03503a0fd1288298861b0f34c83a5319f8abbaa646ae1e7e6
 EBUILD rust-bin-1.75.0.ebuild 7319 BLAKE2B 6d651ee302620a28e8c9312af50eacb4638b5275c432909b061fa9aa5a38660b29a9e519409a5aa9a9f706ac7e2560266816c22b61c4f684ff5ccf23d715de22 SHA512 b9ba5e15c1cded9ea67a42fd22bc11680fa5622354140bafe663f20ce5de953a91d36b5f8f7d6acae9c3b4ed223748471672d0d45d8efd02c139f76698508baf
+EBUILD rust-bin-1.77.1-r100.ebuild 7463 BLAKE2B 39caf9ba28d6f4d21df13a51be93c7bc5300241d11a2c4e8e335115c3dce6289d061dd5b375860d8bc6eb6795af0789f53272d27f0f8a4744f179893a79ae943 SHA512 364dd6823683baba4aff00be15e101b92d57bf67bd020f42145458f9d7edd29a133aa2a39ce230b0b610cffcac5aa12e0fceff1f7d654dc6f8a6da5489cdd892
 EBUILD rust-bin-1.77.1.ebuild 7497 BLAKE2B fb9a25879a8886086486ba5e2010021c01e16ea2c525bf3d36d23e72c7a24eb6f196fd96d3d29231070f5a1db807865e135915224d37eebdffdf485ecc4ca83f SHA512 7ae2fb17a2fcd2d76ae85d1b0420429544a005e2c5ce1cd18a5351353b840d4048d491a316a7a97197198045f4af5f98681b4fa7b5b47df060e0ea6112b3512f
+EBUILD rust-bin-1.79.0-r100.ebuild 7570 BLAKE2B ef16aaf2a468c446cfeccd463d4e3003ad56d568df3b4e37a75c79190d4714f1e01ba00877771b2d52597a3d42545552355d67a0cd6384cb3cf4c1317fe0ad32 SHA512 3beadc903f606f5507c4b54c0bdd8b370a54164659c2ba50a8bd50534f55ddf5981a2d9f5e77b718c1d6b8e66236458092a42e80de0009572be1d5932fc067b2
 EBUILD rust-bin-1.79.0.ebuild 7604 BLAKE2B 99c532442ff6e40c70a391d777122c32deec8ba8cf45f19d1abdf8e19f75a8776c9741ef54915995e24a646ff94b6e7ed76b2d27ac6631645179109915903d90 SHA512 b64087f5de9753a1476ec0ab72151309e75f4aa847ef0556bff0848a15b473fbb0a535ef1e957d19c92f416ad159d519c97764eb55802fc0c466930002e7e671
+EBUILD rust-bin-1.80.1-r100.ebuild 7779 BLAKE2B fcbb9a63ca855561b11dd2308fee0ed806efa7124efac1a648f6297b0ac70704301e3f345bc23d24f997e67ab2ad36da4c282a8453e4e67b76c7da7421cac5af SHA512 3ba9fb2f06c3dd86ada75104b206b76e02cd7ac88ef578f941dca986646f0faf597dbb6912c06b0718d7870188aadaf8bf64bc7391f809dad2cd5f5b0b3163a4
 EBUILD rust-bin-1.80.1.ebuild 7813 BLAKE2B 188d7efcdd2e6a0b688de4520db2d179f91bd51ff2a8191b44a5d5cb8be12f668a47cff5035c22b3cab7b00f5043f622b2fa0d80bb642aa1403faa10bb362f4b SHA512 8e53e1c781196eca1b2488602b2a3f2c81ff82a7bdd0a09836783c1fa82e4c34f2d073274186eb57683741d8bc69b870bd9921aeee31a29a8717e1350e3d6e03
+EBUILD rust-bin-1.81.0-r100.ebuild 7705 BLAKE2B 46efdcec9c65541688fccb59e956dcc21ed9d9f19b9db14e039ac4419b1019bd82ca8d3112e659cf96fb9025e0224b7f8de2eef932638cf828725154c707d881 SHA512 b93efe2168425a10557f68f1dcc2f9175bd18060489474d0dd9a2d981474a9d781fcc82425c7d7a8ef463e416f1f845763fc4eec434b660f72373fc32ea43cf7
 EBUILD rust-bin-1.81.0.ebuild 7589 BLAKE2B 2cc70b0f0fcbd43b23a94c34f2453051b55bf7aa0081a64dcc64fc0da9edcedf780b3be55e8d56ceb0afd6c66f91d8a82e7f91d51ea76a876fee320132c83d10 SHA512 bbb441806791c0816e5216c812f07e0a5269886cf82edd5411bf908dccff68aa8ed06f39052086c48ae6066c982deea521621d98272dc586917e6b271104ff8e
+EBUILD rust-bin-1.82.0-r100.ebuild 7740 BLAKE2B 070b8beda1e15c7ee91c76de342be6e7cbcbf1f05d6fbe18b80dd486f716cbcde6ef975936b6d942469a583cc84ed2cb20417f4215951d330890411d51d6104f SHA512 f88328c6248c283fd0a33dec879bfc2a0509188ab81e7ba9e920a3e5cc871b0828192196eee8cae76dcfc4d789cbe2b1d68b16b77c8b98fbd101f34cd920e677
 EBUILD rust-bin-1.82.0.ebuild 7624 BLAKE2B 2706be9714c3f62fb9c18d176ab3abc31dce8305cdc137e7d63cf616ea0a7315d4988659ddd10f67dec9c732cf17aec623df9a7c0781f2baf73d4db24689834c SHA512 0ce02301710e059bcca5e6f079ead6a9e9f5642f3fa6a6713615c68f0d0c65dd1b509d65a372cc64d9022287d41a0558a8632d026e4664d0429a9210e527291b
 MISC metadata.xml 1220 BLAKE2B 5c4d286e569c929913317d15d37de08db51655ec41c1d3b1d84aeb6982b53afd7ebf3f9adbcd4e3c76fc9b82056648b6af1507a5728388fd2d2e8d743e5225db SHA512 72d32987894268a7b3ac8e8606428cf8315fcf29ce1945c9e55527a5c696742f6f2a44dcfe01bf5abb0cad60b5881a59dedecdc07db4ef2df22ef13e3b2732a8
diff --git a/dev-lang/rust-bin/rust-bin-1.71.1-r100.ebuild b/dev-lang/rust-bin/rust-bin-1.71.1-r100.ebuild
new file mode 100644
index 000000000000..c94b15abb363
--- /dev/null
+++ b/dev-lang/rust-bin/rust-bin-1.71.1-r100.ebuild
@@ -0,0 +1,232 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 16 )
+LLVM_OPTIONAL="yes"
+
+inherit llvm-r1 multilib prefix rust-toolchain toolchain-funcs verify-sig multilib-minimal
+
+MY_P="rust-${PV}"
+# curl -L static.rust-lang.org/dist/channel-rust-${PV}.toml 2>/dev/null | grep "xz_url.*rust-src"
+MY_SRC_URI="${RUST_TOOLCHAIN_BASEURL%/}/2023-08-03/rust-src-${PV}.tar.xz"
+GENTOO_BIN_BASEURI="https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}" # omit leading slash
+
+DESCRIPTION="Language empowering everyone to build reliable and efficient software"
+HOMEPAGE="https://www.rust-lang.org/"
+SRC_URI="$(rust_all_arch_uris ${MY_P})
+	rust-src? ( ${MY_SRC_URI} )
+"
+# Keep this separate to allow easy commenting out if not yet built
+SRC_URI+=" sparc? ( ${GENTOO_BIN_BASEURI}/${MY_P}-sparc64-unknown-linux-gnu.tar.xz -> ${MY_P}-sparc64-unknown-linux-gnu.sam.tar.xz ) "
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4 UoI-NCSA"
+SLOT="${PV}"
+KEYWORDS="amd64 arm arm64 ~loong ~mips ppc ppc64 ~riscv ~s390 sparc x86"
+IUSE="big-endian clippy cpu_flags_x86_sse2 doc prefix rust-analyzer rust-src rustfmt"
+
+RDEPEND="
+	>=app-eselect/eselect-rust-20190311
+	dev-libs/openssl
+	sys-apps/lsb-release
+	sys-devel/gcc:*
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+BDEPEND="
+	prefix? ( dev-util/patchelf )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+REQUIRED_USE="x86? ( cpu_flags_x86_sse2 )"
+
+# stripping rust may break it (at least on x86_64)
+# https://github.com/rust-lang/rust/issues/112286
+RESTRICT="strip"
+
+QA_PREBUILT="
+	opt/${P}/bin/.*
+	opt/${P}/lib/.*.so
+	opt/${P}/libexec/.*
+	opt/${P}/lib/rustlib/.*/bin/.*
+	opt/${P}/lib/rustlib/.*/lib/.*
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="opt/${P}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+VERIFY_SIG_OPENPGP_KEY_PATH="/usr/share/openpgp-keys/rust.asc"
+
+pkg_pretend() {
+	if [[ "$(tc-is-softfloat)" != "no" ]] && [[ ${CHOST} == armv7* ]]; then
+		die "${CHOST} is not supported by upstream Rust. You must use a hard float version."
+	fi
+}
+
+src_unpack() {
+	# sadly rust-src tarball does not have corresponding .asc file
+	# so do partial verification
+	if use verify-sig; then
+		for f in ${A}; do
+			if [[ -f ${DISTDIR}/${f}.asc ]]; then
+				verify-sig_verify_detached "${DISTDIR}/${f}" "${DISTDIR}/${f}.asc"
+			fi
+		done
+	fi
+
+	default_src_unpack
+
+	mv "${WORKDIR}/${MY_P}-$(rust_abi)" "${S}" || die
+}
+
+patchelf_for_bin() {
+	local filetype=$(file -b ${1})
+	if [[ ${filetype} == *ELF*interpreter* ]]; then
+		einfo "${1}'s interpreter changed"
+		patchelf ${1} --set-interpreter ${2} || die
+	elif [[ ${filetype} == *script* ]]; then
+		hprefixify ${1}
+	fi
+}
+
+multilib_src_install() {
+	if multilib_is_native_abi; then
+
+	# start native abi install
+	pushd "${S}" >/dev/null || die
+	local analysis std
+	analysis="$(grep 'analysis' ./components)"
+	std="$(grep 'std' ./components)"
+	local components="rustc,cargo,${std}"
+	use doc && components="${components},rust-docs"
+	use clippy && components="${components},clippy-preview"
+	use rustfmt && components="${components},rustfmt-preview"
+	use rust-analyzer && components="${components},rust-analyzer-preview,${analysis}"
+	# Rust component 'rust-src' is extracted from separate archive
+	if use rust-src; then
+		einfo "Combining rust and rust-src installers"
+		mv -v "${WORKDIR}/rust-src-${PV}/rust-src" "${S}" || die
+		echo rust-src >> ./components || die
+		components="${components},rust-src"
+	fi
+	./install.sh \
+		--components="${components}" \
+		--disable-verify \
+		--prefix="${ED}/opt/${P}" \
+		--mandir="${ED}/opt/${P}/man" \
+		--disable-ldconfig \
+		|| die
+
+	if use prefix; then
+		local interpreter=$(patchelf --print-interpreter "${EPREFIX}/bin/bash")
+		ebegin "Changing interpreter to ${interpreter} for Gentoo prefix at ${ED}/opt/${P}/bin"
+		find "${ED}/opt/${P}/bin" -type f -print0 | \
+			while IFS=  read -r -d '' filename; do
+				patchelf_for_bin ${filename} ${interpreter} \; || die
+			done
+		eend $?
+	fi
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /opt/rust-bin-<ver>/bin/rustc-<ver>
+		local ver_i="${i}-bin-${PV}"
+		ln -v "${ED}/opt/${P}/bin/${i}" "${ED}/opt/${P}/bin/${ver_i}" || die
+		dosym "../../opt/${P}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "../../../opt/${P}/lib" "/usr/lib/rust/lib-bin-${PV}"
+	dosym "../../../opt/${P}/man" "/usr/lib/rust/man-bin-${PV}"
+	dosym "../../opt/${P}/lib/rustlib" "/usr/lib/rustlib-bin-${PV}"
+	dosym "../../../opt/${P}/share/doc/rust" "/usr/share/doc/${P}"
+
+	# make all capital underscored variable
+	local CARGO_TRIPLET="$(rust_abi)"
+	CARGO_TRIPLET="${CARGO_TRIPLET//-/_}"
+	CARGO_TRIPLET="${CARGO_TRIPLET^^}"
+	cat <<-_EOF_ > "${T}/50${P}"
+	LDPATH="${EPREFIX}/usr/lib/rust/lib-bin-${PV}"
+	MANPATH="${EPREFIX}/usr/lib/rust/man-bin-${PV}"
+	$(usev elibc_musl "CARGO_TARGET_${CARGO_TRIPLET}_RUSTFLAGS=\"-C target-feature=-crt-static\"")
+	_EOF_
+	doenvd "${T}/50${P}"
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+	/usr/bin/cargo
+	/usr/bin/rustdoc
+	/usr/bin/rust-gdb
+	/usr/bin/rust-gdbgui
+	/usr/bin/rust-lldb
+	/usr/lib/rustlib
+	/usr/lib/rust/lib
+	/usr/lib/rust/man
+	/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+	popd >/dev/null || die
+	#end native abi install
+
+	else
+		local rust_target
+		rust_target="$(rust_abi $(get_abi_CHOST ${v##*.}))"
+		dodir "/opt/${P}/lib/rustlib"
+		cp -vr "${WORKDIR}/rust-${PV}-${rust_target}/rust-std-${rust_target}/lib/rustlib/${rust_target}"\
+			"${ED}/opt/${P}/lib/rustlib" || die
+	fi
+
+	# BUG: installs x86_64 binary on other arches
+	rm -f "${ED}/opt/${P}/lib/rustlib/"*/bin/rust-llvm-dwp || die
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	elog "Rust installs a helper script for calling GDB now,"
+	elog "for your convenience it is installed under /usr/bin/rust-gdb-bin-${PV}."
+
+	if has_version app-editors/emacs; then
+		elog "install app-emacs/rust-mode to get emacs support for rust."
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		elog "install app-vim/rust-vim to get vim support for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust-bin/rust-bin-1.74.1-r100.ebuild b/dev-lang/rust-bin/rust-bin-1.74.1-r100.ebuild
new file mode 100644
index 000000000000..9e926b10bbd2
--- /dev/null
+++ b/dev-lang/rust-bin/rust-bin-1.74.1-r100.ebuild
@@ -0,0 +1,242 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 17 )
+LLVM_OPTIONAL="yes"
+
+inherit llvm-r1 multilib prefix rust-toolchain toolchain-funcs verify-sig multilib-minimal
+
+MY_P="rust-${PV}"
+# curl -L static.rust-lang.org/dist/channel-rust-${PV}.toml 2>/dev/null | grep "xz_url.*rust-src"
+MY_SRC_URI="${RUST_TOOLCHAIN_BASEURL%/}/2023-12-07/rust-src-${PV}.tar.xz"
+GENTOO_BIN_BASEURI="https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}" # omit leading slash
+
+DESCRIPTION="Language empowering everyone to build reliable and efficient software"
+HOMEPAGE="https://www.rust-lang.org/"
+SRC_URI="$(rust_all_arch_uris ${MY_P})
+	rust-src? ( ${MY_SRC_URI} )
+"
+# Keep this separate to allow easy commenting out if not yet built
+SRC_URI+=" sparc? ( ${GENTOO_BIN_BASEURI}/${MY_P}-sparc64-unknown-linux-gnu.tar.xz ) "
+#SRC_URI+=" mips? (
+#	abi_mips_o32? (
+#		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips-unknown-linux-gnu.tar.xz )
+#		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mipsel-unknown-linux-gnu.tar.xz )
+#	)
+#	abi_mips_n64? (
+#		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64-unknown-linux-gnuabi64.tar.xz )
+#		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64el-unknown-linux-gnuabi64.tar.xz )
+#	)
+#)"
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+KEYWORDS="amd64 arm arm64 ~loong ppc ppc64 ~riscv ~s390 sparc x86"
+IUSE="big-endian clippy cpu_flags_x86_sse2 doc prefix rust-analyzer rust-src rustfmt"
+
+RDEPEND="
+	>=app-eselect/eselect-rust-20190311
+	dev-libs/openssl
+	sys-apps/lsb-release
+	sys-devel/gcc:*
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+BDEPEND="
+	prefix? ( dev-util/patchelf )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+REQUIRED_USE="x86? ( cpu_flags_x86_sse2 )"
+
+# stripping rust may break it (at least on x86_64)
+# https://github.com/rust-lang/rust/issues/112286
+RESTRICT="strip"
+
+QA_PREBUILT="
+	opt/${P}/bin/.*
+	opt/${P}/lib/.*.so
+	opt/${P}/libexec/.*
+	opt/${P}/lib/rustlib/.*/bin/.*
+	opt/${P}/lib/rustlib/.*/lib/.*
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="opt/${P}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+VERIFY_SIG_OPENPGP_KEY_PATH="/usr/share/openpgp-keys/rust.asc"
+
+pkg_pretend() {
+	if [[ "$(tc-is-softfloat)" != "no" ]] && [[ ${CHOST} == armv7* ]]; then
+		die "${CHOST} is not supported by upstream Rust. You must use a hard float version."
+	fi
+}
+
+src_unpack() {
+	# sadly rust-src tarball does not have corresponding .asc file
+	# so do partial verification
+	if use verify-sig; then
+		for f in ${A}; do
+			if [[ -f ${DISTDIR}/${f}.asc ]]; then
+				verify-sig_verify_detached "${DISTDIR}/${f}" "${DISTDIR}/${f}.asc"
+			fi
+		done
+	fi
+
+	default_src_unpack
+
+	mv "${WORKDIR}/${MY_P}-$(rust_abi)" "${S}" || die
+}
+
+patchelf_for_bin() {
+	local filetype=$(file -b ${1})
+	if [[ ${filetype} == *ELF*interpreter* ]]; then
+		einfo "${1}'s interpreter changed"
+		patchelf ${1} --set-interpreter ${2} || die
+	elif [[ ${filetype} == *script* ]]; then
+		hprefixify ${1}
+	fi
+}
+
+multilib_src_install() {
+	if multilib_is_native_abi; then
+
+	# start native abi install
+	pushd "${S}" >/dev/null || die
+	local analysis std
+	analysis="$(grep 'analysis' ./components)"
+	std="$(grep 'std' ./components)"
+	local components="rustc,cargo,${std}"
+	use doc && components="${components},rust-docs"
+	use clippy && components="${components},clippy-preview"
+	use rustfmt && components="${components},rustfmt-preview"
+	use rust-analyzer && components="${components},rust-analyzer-preview,${analysis}"
+	# Rust component 'rust-src' is extracted from separate archive
+	if use rust-src; then
+		einfo "Combining rust and rust-src installers"
+		mv -v "${WORKDIR}/rust-src-${PV}/rust-src" "${S}" || die
+		echo rust-src >> ./components || die
+		components="${components},rust-src"
+	fi
+	./install.sh \
+		--components="${components}" \
+		--disable-verify \
+		--prefix="${ED}/opt/${P}" \
+		--mandir="${ED}/opt/${P}/man" \
+		--disable-ldconfig \
+		|| die
+
+	if use prefix; then
+		local interpreter=$(patchelf --print-interpreter "${EPREFIX}/bin/bash")
+		ebegin "Changing interpreter to ${interpreter} for Gentoo prefix at ${ED}/opt/${P}/bin"
+		find "${ED}/opt/${P}/bin" -type f -print0 | \
+			while IFS=  read -r -d '' filename; do
+				patchelf_for_bin ${filename} ${interpreter} \; || die
+			done
+		eend $?
+	fi
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /opt/rust-bin-<ver>/bin/rustc-<ver>
+		local ver_i="${i}-bin-${PV}"
+		ln -v "${ED}/opt/${P}/bin/${i}" "${ED}/opt/${P}/bin/${ver_i}" || die
+		dosym "../../opt/${P}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "../../../opt/${P}/lib" "/usr/lib/rust/lib-bin-${PV}"
+	dosym "../../../opt/${P}/man" "/usr/lib/rust/man-bin-${PV}"
+	dosym "../../opt/${P}/lib/rustlib" "/usr/lib/rustlib-bin-${PV}"
+	dosym "../../../opt/${P}/share/doc/rust" "/usr/share/doc/${P}"
+
+	# make all capital underscored variable
+	local CARGO_TRIPLET="$(rust_abi)"
+	CARGO_TRIPLET="${CARGO_TRIPLET//-/_}"
+	CARGO_TRIPLET="${CARGO_TRIPLET^^}"
+	cat <<-_EOF_ > "${T}/50${P}"
+	LDPATH="${EPREFIX}/usr/lib/rust/lib-bin-${PV}"
+	MANPATH="${EPREFIX}/usr/lib/rust/man-bin-${PV}"
+	$(usev elibc_musl "CARGO_TARGET_${CARGO_TRIPLET}_RUSTFLAGS=\"-C target-feature=-crt-static\"")
+	_EOF_
+	doenvd "${T}/50${P}"
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+	/usr/bin/cargo
+	/usr/bin/rustdoc
+	/usr/bin/rust-gdb
+	/usr/bin/rust-gdbgui
+	/usr/bin/rust-lldb
+	/usr/lib/rustlib
+	/usr/lib/rust/lib
+	/usr/lib/rust/man
+	/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+	popd >/dev/null || die
+	#end native abi install
+
+	else
+		local rust_target
+		rust_target="$(rust_abi $(get_abi_CHOST ${v##*.}))"
+		dodir "/opt/${P}/lib/rustlib"
+		cp -vr "${WORKDIR}/rust-${PV}-${rust_target}/rust-std-${rust_target}/lib/rustlib/${rust_target}"\
+			"${ED}/opt/${P}/lib/rustlib" || die
+	fi
+
+	# BUG: installs x86_64 binary on other arches
+	rm -f "${ED}/opt/${P}/lib/rustlib/"*/bin/rust-llvm-dwp || die
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	elog "Rust installs a helper script for calling GDB now,"
+	elog "for your convenience it is installed under /usr/bin/rust-gdb-bin-${PV}."
+
+	if has_version app-editors/emacs; then
+		elog "install app-emacs/rust-mode to get emacs support for rust."
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		elog "install app-vim/rust-vim to get vim support for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust-bin/rust-bin-1.75.0-r100.ebuild b/dev-lang/rust-bin/rust-bin-1.75.0-r100.ebuild
new file mode 100644
index 000000000000..b551ade199bc
--- /dev/null
+++ b/dev-lang/rust-bin/rust-bin-1.75.0-r100.ebuild
@@ -0,0 +1,242 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 17 )
+LLVM_OPTIONAL="yes"
+
+inherit llvm-r1 multilib prefix rust-toolchain toolchain-funcs verify-sig multilib-minimal
+
+MY_P="rust-${PV}"
+# curl -L static.rust-lang.org/dist/channel-rust-${PV}.toml 2>/dev/null | grep "xz_url.*rust-src"
+MY_SRC_URI="${RUST_TOOLCHAIN_BASEURL%/}/2023-12-28/rust-src-${PV}.tar.xz"
+GENTOO_BIN_BASEURI="https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}" # omit leading slash
+
+DESCRIPTION="Language empowering everyone to build reliable and efficient software"
+HOMEPAGE="https://www.rust-lang.org/"
+SRC_URI="$(rust_all_arch_uris ${MY_P})
+	rust-src? ( ${MY_SRC_URI} )
+"
+# Keep this separate to allow easy commenting out if not yet built
+SRC_URI+=" sparc? ( ${GENTOO_BIN_BASEURI}/${MY_P}-sparc64-unknown-linux-gnu.tar.xz ) "
+#SRC_URI+=" mips? (
+#	abi_mips_o32? (
+#		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips-unknown-linux-gnu.tar.xz )
+#		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mipsel-unknown-linux-gnu.tar.xz )
+#	)
+#	abi_mips_n64? (
+#		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64-unknown-linux-gnuabi64.tar.xz )
+#		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64el-unknown-linux-gnuabi64.tar.xz )
+#	)
+#)"
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+KEYWORDS="amd64 arm arm64 ~loong ppc ppc64 ~riscv ~s390 sparc x86"
+IUSE="big-endian clippy cpu_flags_x86_sse2 doc prefix rust-analyzer rust-src rustfmt"
+
+RDEPEND="
+	>=app-eselect/eselect-rust-20190311
+	dev-libs/openssl
+	sys-apps/lsb-release
+	sys-devel/gcc:*
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+BDEPEND="
+	prefix? ( dev-util/patchelf )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+REQUIRED_USE="x86? ( cpu_flags_x86_sse2 )"
+
+# stripping rust may break it (at least on x86_64)
+# https://github.com/rust-lang/rust/issues/112286
+RESTRICT="strip"
+
+QA_PREBUILT="
+	opt/${P}/bin/.*
+	opt/${P}/lib/.*.so
+	opt/${P}/libexec/.*
+	opt/${P}/lib/rustlib/.*/bin/.*
+	opt/${P}/lib/rustlib/.*/lib/.*
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="opt/${P}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+VERIFY_SIG_OPENPGP_KEY_PATH="/usr/share/openpgp-keys/rust.asc"
+
+pkg_pretend() {
+	if [[ "$(tc-is-softfloat)" != "no" ]] && [[ ${CHOST} == armv7* ]]; then
+		die "${CHOST} is not supported by upstream Rust. You must use a hard float version."
+	fi
+}
+
+src_unpack() {
+	# sadly rust-src tarball does not have corresponding .asc file
+	# so do partial verification
+	if use verify-sig; then
+		for f in ${A}; do
+			if [[ -f ${DISTDIR}/${f}.asc ]]; then
+				verify-sig_verify_detached "${DISTDIR}/${f}" "${DISTDIR}/${f}.asc"
+			fi
+		done
+	fi
+
+	default_src_unpack
+
+	mv "${WORKDIR}/${MY_P}-$(rust_abi)" "${S}" || die
+}
+
+patchelf_for_bin() {
+	local filetype=$(file -b ${1})
+	if [[ ${filetype} == *ELF*interpreter* ]]; then
+		einfo "${1}'s interpreter changed"
+		patchelf ${1} --set-interpreter ${2} || die
+	elif [[ ${filetype} == *script* ]]; then
+		hprefixify ${1}
+	fi
+}
+
+multilib_src_install() {
+	if multilib_is_native_abi; then
+
+	# start native abi install
+	pushd "${S}" >/dev/null || die
+	local analysis std
+	analysis="$(grep 'analysis' ./components)"
+	std="$(grep 'std' ./components)"
+	local components="rustc,cargo,${std}"
+	use doc && components="${components},rust-docs"
+	use clippy && components="${components},clippy-preview"
+	use rustfmt && components="${components},rustfmt-preview"
+	use rust-analyzer && components="${components},rust-analyzer-preview,${analysis}"
+	# Rust component 'rust-src' is extracted from separate archive
+	if use rust-src; then
+		einfo "Combining rust and rust-src installers"
+		mv -v "${WORKDIR}/rust-src-${PV}/rust-src" "${S}" || die
+		echo rust-src >> ./components || die
+		components="${components},rust-src"
+	fi
+	./install.sh \
+		--components="${components}" \
+		--disable-verify \
+		--prefix="${ED}/opt/${P}" \
+		--mandir="${ED}/opt/${P}/man" \
+		--disable-ldconfig \
+		|| die
+
+	if use prefix; then
+		local interpreter=$(patchelf --print-interpreter "${EPREFIX}"/bin/bash)
+		ebegin "Changing interpreter to ${interpreter} for Gentoo prefix at ${ED}/opt/${P}/bin"
+		find "${ED}/opt/${P}/bin" -type f -print0 | \
+			while IFS=  read -r -d '' filename; do
+				patchelf_for_bin ${filename} ${interpreter} \; || die
+			done
+		eend $?
+	fi
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /opt/rust-bin-<ver>/bin/rustc-<ver>
+		local ver_i="${i}-bin-${PV}"
+		ln -v "${ED}/opt/${P}/bin/${i}" "${ED}/opt/${P}/bin/${ver_i}" || die
+		dosym "../../opt/${P}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "../../../opt/${P}/lib" "/usr/lib/rust/lib-bin-${PV}"
+	dosym "../../../opt/${P}/man" "/usr/lib/rust/man-bin-${PV}"
+	dosym "../../opt/${P}/lib/rustlib" "/usr/lib/rustlib-bin-${PV}"
+	dosym "../../../opt/${P}/share/doc/rust" "/usr/share/doc/${P}"
+
+	# make all capital underscored variable
+	local CARGO_TRIPLET="$(rust_abi)"
+	CARGO_TRIPLET="${CARGO_TRIPLET//-/_}"
+	CARGO_TRIPLET="${CARGO_TRIPLET^^}"
+	cat <<-_EOF_ > "${T}/50${P}"
+	LDPATH="${EPREFIX}/usr/lib/rust/lib-bin-${PV}"
+	MANPATH="${EPREFIX}/usr/lib/rust/man-bin-${PV}"
+	$(usev elibc_musl "CARGO_TARGET_${CARGO_TRIPLET}_RUSTFLAGS=\"-C target-feature=-crt-static\"")
+	_EOF_
+	doenvd "${T}/50${P}"
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+	/usr/bin/cargo
+	/usr/bin/rustdoc
+	/usr/bin/rust-gdb
+	/usr/bin/rust-gdbgui
+	/usr/bin/rust-lldb
+	/usr/lib/rustlib
+	/usr/lib/rust/lib
+	/usr/lib/rust/man
+	/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+	popd >/dev/null || die
+	#end native abi install
+
+	else
+		local rust_target
+		rust_target="$(rust_abi $(get_abi_CHOST ${v##*.}))"
+		dodir "/opt/${P}/lib/rustlib"
+		cp -vr "${WORKDIR}/rust-${PV}-${rust_target}/rust-std-${rust_target}/lib/rustlib/${rust_target}"\
+			"${ED}/opt/${P}/lib/rustlib" || die
+	fi
+
+	# BUG: installs x86_64 binary on other arches
+	rm -f "${ED}/opt/${P}/lib/rustlib/"*/bin/rust-llvm-dwp || die
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	elog "Rust installs a helper script for calling GDB now,"
+	elog "for your convenience it is installed under /usr/bin/rust-gdb-bin-${PV}."
+
+	if has_version app-editors/emacs; then
+		elog "install app-emacs/rust-mode to get emacs support for rust."
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		elog "install app-vim/rust-vim to get vim support for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust-bin/rust-bin-1.77.1-r100.ebuild b/dev-lang/rust-bin/rust-bin-1.77.1-r100.ebuild
new file mode 100644
index 000000000000..b097ab54fc83
--- /dev/null
+++ b/dev-lang/rust-bin/rust-bin-1.77.1-r100.ebuild
@@ -0,0 +1,244 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 17 )
+LLVM_OPTIONAL="yes"
+
+inherit llvm-r1 multilib prefix rust-toolchain toolchain-funcs verify-sig multilib-minimal
+
+MY_P="rust-${PV}"
+# curl -L static.rust-lang.org/dist/channel-rust-${PV}.toml 2>/dev/null | grep "xz_url.*rust-src"
+MY_SRC_URI="${RUST_TOOLCHAIN_BASEURL%/}/2024-03-28/rust-src-${PV}.tar.xz"
+GENTOO_BIN_BASEURI="https://dev.gentoo.org/~arthurzam/distfiles/${CATEGORY}/${PN}" # omit leading slash
+
+DESCRIPTION="Systems programming language from Mozilla"
+HOMEPAGE="https://www.rust-lang.org/"
+SRC_URI="$(rust_all_arch_uris ${MY_P})
+	rust-src? ( ${MY_SRC_URI} )
+"
+# Keep this separate to allow easy commenting out if not yet built
+SRC_URI+=" sparc? ( ${GENTOO_BIN_BASEURI}/${MY_P}-sparc64-unknown-linux-gnu.tar.xz ) "
+SRC_URI+=" mips? (
+	abi_mips_o32? (
+		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips-unknown-linux-gnu.tar.xz )
+		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mipsel-unknown-linux-gnu.tar.xz )
+	)
+	abi_mips_n64? (
+		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64-unknown-linux-gnuabi64.tar.xz )
+		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64el-unknown-linux-gnuabi64.tar.xz )
+	)
+)"
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+KEYWORDS="amd64 arm arm64 ~loong ~mips ppc ppc64 ~riscv ~s390 sparc x86"
+IUSE="big-endian clippy cpu_flags_x86_sse2 doc prefix rust-analyzer rust-src rustfmt"
+
+RDEPEND="
+	>=app-eselect/eselect-rust-20190311
+	dev-libs/openssl
+	sys-apps/lsb-release
+	sys-devel/gcc:*
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+BDEPEND="
+	prefix? ( dev-util/patchelf )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+REQUIRED_USE="x86? ( cpu_flags_x86_sse2 )"
+
+# stripping rust may break it (at least on x86_64)
+# https://github.com/rust-lang/rust/issues/112286
+RESTRICT="strip"
+
+QA_PREBUILT="
+	opt/${P}/bin/.*
+	opt/${P}/lib/.*.so
+	opt/${P}/libexec/.*
+	opt/${P}/lib/rustlib/.*/bin/.*
+	opt/${P}/lib/rustlib/.*/lib/.*
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="opt/${P}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+VERIFY_SIG_OPENPGP_KEY_PATH="/usr/share/openpgp-keys/rust.asc"
+
+pkg_pretend() {
+	if [[ "$(tc-is-softfloat)" != "no" ]] && [[ ${CHOST} == armv7* ]]; then
+		die "${CHOST} is not supported by upstream Rust. You must use a hard float version."
+	fi
+}
+
+src_unpack() {
+	# sadly rust-src tarball does not have corresponding .asc file
+	# so do partial verification
+	if use verify-sig; then
+		for f in ${A}; do
+			if [[ -f ${DISTDIR}/${f}.asc ]]; then
+				verify-sig_verify_detached "${DISTDIR}/${f}" "${DISTDIR}/${f}.asc"
+			fi
+		done
+	fi
+
+	default_src_unpack
+
+	mv "${WORKDIR}/${MY_P}-$(rust_abi)" "${S}" || die
+}
+
+patchelf_for_bin() {
+	local filetype=$(file -b ${1})
+	if [[ ${filetype} == *ELF*interpreter* ]]; then
+		einfo "${1}'s interpreter changed"
+		patchelf ${1} --set-interpreter ${2} || die
+	elif [[ ${filetype} == *script* ]]; then
+		hprefixify ${1}
+	fi
+}
+
+multilib_src_install() {
+	if multilib_is_native_abi; then
+
+	# start native abi install
+	pushd "${S}" >/dev/null || die
+	local analysis std
+	analysis="$(grep 'analysis' ./components)"
+	std="$(grep 'std' ./components)"
+	local components="rustc,cargo,rust-demangler-preview,${std}"
+	use doc && components="${components},rust-docs"
+	use clippy && components="${components},clippy-preview"
+	use rustfmt && components="${components},rustfmt-preview"
+	use rust-analyzer && components="${components},rust-analyzer-preview,${analysis}"
+	# Rust component 'rust-src' is extracted from separate archive
+	if use rust-src; then
+		einfo "Combining rust and rust-src installers"
+		mv -v "${WORKDIR}/rust-src-${PV}/rust-src" "${S}" || die
+		echo rust-src >> ./components || die
+		components="${components},rust-src"
+	fi
+	./install.sh \
+		--components="${components}" \
+		--disable-verify \
+		--prefix="${ED}/opt/${P}" \
+		--mandir="${ED}/opt/${P}/man" \
+		--disable-ldconfig \
+		|| die
+
+	if use prefix; then
+		local interpreter=$(patchelf --print-interpreter "${EPREFIX}"/bin/bash)
+		ebegin "Changing interpreter to ${interpreter} for Gentoo prefix at ${ED}/opt/${P}/bin"
+		find "${ED}/opt/${P}/bin" -type f -print0 | \
+			while IFS=  read -r -d '' filename; do
+				patchelf_for_bin ${filename} ${interpreter} \; || die
+			done
+		eend $?
+	fi
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-demangler
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /opt/rust-bin-<ver>/bin/rustc-<ver>
+		local ver_i="${i}-bin-${PV}"
+		ln -v "${ED}/opt/${P}/bin/${i}" "${ED}/opt/${P}/bin/${ver_i}" || die
+		dosym "../../opt/${P}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "../../../opt/${P}/lib" "/usr/lib/rust/lib-bin-${PV}"
+	dosym "../../../opt/${P}/man" "/usr/lib/rust/man-bin-${PV}"
+	dosym "../../opt/${P}/lib/rustlib" "/usr/lib/rustlib-bin-${PV}"
+	dosym "../../../opt/${P}/share/doc/rust" "/usr/share/doc/${P}"
+
+	# make all capital underscored variable
+	local CARGO_TRIPLET="$(rust_abi)"
+	CARGO_TRIPLET="${CARGO_TRIPLET//-/_}"
+	CARGO_TRIPLET="${CARGO_TRIPLET^^}"
+	cat <<-_EOF_ > "${T}/50${P}"
+	LDPATH="${EPREFIX}/usr/lib/rust/lib-bin-${PV}"
+	MANPATH="${EPREFIX}/usr/lib/rust/man-bin-${PV}"
+	$(usev elibc_musl "CARGO_TARGET_${CARGO_TRIPLET}_RUSTFLAGS=\"-C target-feature=-crt-static\"")
+	_EOF_
+	doenvd "${T}/50${P}"
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+	/usr/bin/cargo
+	/usr/bin/rustdoc
+	/usr/bin/rust-demangler
+	/usr/bin/rust-gdb
+	/usr/bin/rust-gdbgui
+	/usr/bin/rust-lldb
+	/usr/lib/rustlib
+	/usr/lib/rust/lib
+	/usr/lib/rust/man
+	/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+	popd >/dev/null || die
+	#end native abi install
+
+	else
+		local rust_target
+		rust_target="$(rust_abi $(get_abi_CHOST ${v##*.}))"
+		dodir "/opt/${P}/lib/rustlib"
+		cp -vr "${WORKDIR}/rust-${PV}-${rust_target}/rust-std-${rust_target}/lib/rustlib/${rust_target}"\
+			"${ED}/opt/${P}/lib/rustlib" || die
+	fi
+
+	# BUG: installs x86_64 binary on other arches
+	rm -f "${ED}/opt/${P}/lib/rustlib/"*/bin/rust-llvm-dwp || die
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	elog "Rust installs a helper script for calling GDB now,"
+	elog "for your convenience it is installed under /usr/bin/rust-gdb-bin-${PV}."
+
+	if has_version app-editors/emacs; then
+		elog "install app-emacs/rust-mode to get emacs support for rust."
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		elog "install app-vim/rust-vim to get vim support for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust-bin/rust-bin-1.79.0-r100.ebuild b/dev-lang/rust-bin/rust-bin-1.79.0-r100.ebuild
new file mode 100644
index 000000000000..cf32754cb8f5
--- /dev/null
+++ b/dev-lang/rust-bin/rust-bin-1.79.0-r100.ebuild
@@ -0,0 +1,247 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 18 )
+LLVM_OPTIONAL="yes"
+
+inherit llvm-r1 multilib prefix rust-toolchain toolchain-funcs verify-sig multilib-minimal
+
+MY_P="rust-${PV}"
+# curl -L static.rust-lang.org/dist/channel-rust-${PV}.toml 2>/dev/null | grep "xz_url.*rust-src"
+MY_SRC_URI="${RUST_TOOLCHAIN_BASEURL%/}/2024-06-13/rust-src-${PV}.tar.xz"
+GENTOO_BIN_BASEURI="https://dev.gentoo.org/~arthurzam/distfiles/${CATEGORY}/${PN}" # omit leading slash
+
+DESCRIPTION="Systems programming language from Mozilla"
+HOMEPAGE="https://www.rust-lang.org/"
+SRC_URI="$(rust_all_arch_uris ${MY_P})
+	rust-src? ( ${MY_SRC_URI} )
+"
+# Keep this separate to allow easy commenting out if not yet built
+SRC_URI+=" sparc? ( ${GENTOO_BIN_BASEURI}/${MY_P}-sparc64-unknown-linux-gnu.tar.xz ) "
+SRC_URI+=" mips? (
+	abi_mips_o32? (
+		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips-unknown-linux-gnu.tar.xz )
+		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mipsel-unknown-linux-gnu.tar.xz )
+	)
+	abi_mips_n64? (
+		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64-unknown-linux-gnuabi64.tar.xz )
+		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64el-unknown-linux-gnuabi64.tar.xz )
+	)
+)"
+SRC_URI+=" riscv? (
+	elibc_musl? ( ${GENTOO_BIN_BASEURI}/${MY_P}-riscv64gc-unknown-linux-musl.tar.xz )
+)"
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+KEYWORDS="amd64 arm arm64 ~loong ~mips ppc ppc64 ~riscv ~s390 sparc x86"
+IUSE="big-endian clippy cpu_flags_x86_sse2 doc prefix rust-analyzer rust-src rustfmt"
+
+RDEPEND="
+	>=app-eselect/eselect-rust-20190311
+	dev-libs/openssl
+	sys-apps/lsb-release
+	sys-devel/gcc:*
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+BDEPEND="
+	prefix? ( dev-util/patchelf )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+REQUIRED_USE="x86? ( cpu_flags_x86_sse2 )"
+
+# stripping rust may break it (at least on x86_64)
+# https://github.com/rust-lang/rust/issues/112286
+RESTRICT="strip"
+
+QA_PREBUILT="
+	opt/${P}/bin/.*
+	opt/${P}/lib/.*.so*
+	opt/${P}/libexec/.*
+	opt/${P}/lib/rustlib/.*/bin/.*
+	opt/${P}/lib/rustlib/.*/lib/.*
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="opt/${P}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+VERIFY_SIG_OPENPGP_KEY_PATH="/usr/share/openpgp-keys/rust.asc"
+
+pkg_pretend() {
+	if [[ "$(tc-is-softfloat)" != "no" ]] && [[ ${CHOST} == armv7* ]]; then
+		die "${CHOST} is not supported by upstream Rust. You must use a hard float version."
+	fi
+}
+
+src_unpack() {
+	# sadly rust-src tarball does not have corresponding .asc file
+	# so do partial verification
+	if use verify-sig; then
+		for f in ${A}; do
+			if [[ -f ${DISTDIR}/${f}.asc ]]; then
+				verify-sig_verify_detached "${DISTDIR}/${f}" "${DISTDIR}/${f}.asc"
+			fi
+		done
+	fi
+
+	default_src_unpack
+
+	mv "${WORKDIR}/${MY_P}-$(rust_abi)" "${S}" || die
+}
+
+patchelf_for_bin() {
+	local filetype=$(file -b ${1})
+	if [[ ${filetype} == *ELF*interpreter* ]]; then
+		einfo "${1}'s interpreter changed"
+		patchelf ${1} --set-interpreter ${2} || die
+	elif [[ ${filetype} == *script* ]]; then
+		hprefixify ${1}
+	fi
+}
+
+multilib_src_install() {
+	if multilib_is_native_abi; then
+
+	# start native abi install
+	pushd "${S}" >/dev/null || die
+	local analysis std
+	analysis="$(grep 'analysis' ./components)"
+	std="$(grep 'std' ./components)"
+	local components="rustc,cargo,rust-demangler-preview,${std}"
+	use doc && components="${components},rust-docs"
+	use clippy && components="${components},clippy-preview"
+	use rustfmt && components="${components},rustfmt-preview"
+	use rust-analyzer && components="${components},rust-analyzer-preview,${analysis}"
+	# Rust component 'rust-src' is extracted from separate archive
+	if use rust-src; then
+		einfo "Combining rust and rust-src installers"
+		mv -v "${WORKDIR}/rust-src-${PV}/rust-src" "${S}" || die
+		echo rust-src >> ./components || die
+		components="${components},rust-src"
+	fi
+	./install.sh \
+		--components="${components}" \
+		--disable-verify \
+		--prefix="${ED}/opt/${P}" \
+		--mandir="${ED}/opt/${P}/man" \
+		--disable-ldconfig \
+		|| die
+
+	if use prefix; then
+		local interpreter=$(patchelf --print-interpreter "${EPREFIX}"/bin/bash)
+		ebegin "Changing interpreter to ${interpreter} for Gentoo prefix at ${ED}/opt/${P}/bin"
+		find "${ED}/opt/${P}/bin" -type f -print0 | \
+			while IFS=  read -r -d '' filename; do
+				patchelf_for_bin ${filename} ${interpreter} \; || die
+			done
+		eend $?
+	fi
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-demangler
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /opt/rust-bin-<ver>/bin/rustc-<ver>
+		local ver_i="${i}-bin-${PV}"
+		ln -v "${ED}/opt/${P}/bin/${i}" "${ED}/opt/${P}/bin/${ver_i}" || die
+		dosym "../../opt/${P}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "../../../opt/${P}/lib" "/usr/lib/rust/lib-bin-${PV}"
+	dosym "../../../opt/${P}/man" "/usr/lib/rust/man-bin-${PV}"
+	dosym "../../opt/${P}/lib/rustlib" "/usr/lib/rustlib-bin-${PV}"
+	dosym "../../../opt/${P}/share/doc/rust" "/usr/share/doc/${P}"
+
+	# make all capital underscored variable
+	local CARGO_TRIPLET="$(rust_abi)"
+	CARGO_TRIPLET="${CARGO_TRIPLET//-/_}"
+	CARGO_TRIPLET="${CARGO_TRIPLET^^}"
+	cat <<-_EOF_ > "${T}/50${P}"
+	LDPATH="${EPREFIX}/usr/lib/rust/lib-bin-${PV}"
+	MANPATH="${EPREFIX}/usr/lib/rust/man-bin-${PV}"
+	$(usev elibc_musl "CARGO_TARGET_${CARGO_TRIPLET}_RUSTFLAGS=\"-C target-feature=-crt-static\"")
+	_EOF_
+	doenvd "${T}/50${P}"
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+	/usr/bin/cargo
+	/usr/bin/rustdoc
+	/usr/bin/rust-demangler
+	/usr/bin/rust-gdb
+	/usr/bin/rust-gdbgui
+	/usr/bin/rust-lldb
+	/usr/lib/rustlib
+	/usr/lib/rust/lib
+	/usr/lib/rust/man
+	/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+	popd >/dev/null || die
+	#end native abi install
+
+	else
+		local rust_target
+		rust_target="$(rust_abi $(get_abi_CHOST ${v##*.}))"
+		dodir "/opt/${P}/lib/rustlib"
+		cp -vr "${WORKDIR}/rust-${PV}-${rust_target}/rust-std-${rust_target}/lib/rustlib/${rust_target}"\
+			"${ED}/opt/${P}/lib/rustlib" || die
+	fi
+
+	# BUG: installs x86_64 binary on other arches
+	rm -f "${ED}/opt/${P}/lib/rustlib/"*/bin/rust-llvm-dwp || die
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	elog "Rust installs a helper script for calling GDB now,"
+	elog "for your convenience it is installed under /usr/bin/rust-gdb-bin-${PV}."
+
+	if has_version app-editors/emacs; then
+		elog "install app-emacs/rust-mode to get emacs support for rust."
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		elog "install app-vim/rust-vim to get vim support for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust-bin/rust-bin-1.80.1-r100.ebuild b/dev-lang/rust-bin/rust-bin-1.80.1-r100.ebuild
new file mode 100644
index 000000000000..e792fcab67bd
--- /dev/null
+++ b/dev-lang/rust-bin/rust-bin-1.80.1-r100.ebuild
@@ -0,0 +1,251 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 18 )
+LLVM_OPTIONAL="yes"
+
+inherit llvm-r1 multilib prefix rust-toolchain toolchain-funcs verify-sig multilib-minimal
+
+MY_P="rust-${PV}"
+# curl -L static.rust-lang.org/dist/channel-rust-${PV}.toml 2>/dev/null | grep "xz_url.*rust-src"
+MY_SRC_URI="${RUST_TOOLCHAIN_BASEURL%/}/2024-08-08/rust-src-${PV}.tar.xz"
+GENTOO_BIN_BASEURI="https://dev.gentoo.org/~arthurzam/distfiles/${CATEGORY}/${PN}" # omit leading slash
+
+DESCRIPTION="Systems programming language from Mozilla"
+HOMEPAGE="https://www.rust-lang.org/"
+SRC_URI="$(rust_all_arch_uris ${MY_P})
+	rust-src? ( ${MY_SRC_URI} )
+"
+# Keep this separate to allow easy commenting out if not yet built
+SRC_URI+=" sparc? ( ${GENTOO_BIN_BASEURI}/${MY_P}-sparc64-unknown-linux-gnu.tar.xz ) "
+SRC_URI+=" mips? (
+	abi_mips_o32? (
+		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips-unknown-linux-gnu.tar.xz )
+		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mipsel-unknown-linux-gnu.tar.xz )
+	)
+	abi_mips_n64? (
+		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64-unknown-linux-gnuabi64.tar.xz )
+		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64el-unknown-linux-gnuabi64.tar.xz )
+	)
+)"
+SRC_URI+=" riscv? (
+	elibc_musl? ( ${GENTOO_BIN_BASEURI}/${MY_P}-riscv64gc-unknown-linux-musl.tar.xz )
+)"
+SRC_URI+=" ppc64? ( elibc_musl? (
+	big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-powerpc64-unknown-linux-musl.tar.xz )
+	!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-powerpc64le-unknown-linux-musl.tar.xz )
+) )"
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+KEYWORDS="amd64 arm arm64 ~loong ~mips ppc ppc64 ~riscv ~s390 sparc x86"
+IUSE="big-endian clippy cpu_flags_x86_sse2 doc prefix rust-analyzer rust-src rustfmt"
+
+RDEPEND="
+	>=app-eselect/eselect-rust-20190311
+	dev-libs/openssl
+	sys-apps/lsb-release
+	sys-devel/gcc:*
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+BDEPEND="
+	prefix? ( dev-util/patchelf )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+REQUIRED_USE="x86? ( cpu_flags_x86_sse2 )"
+
+# stripping rust may break it (at least on x86_64)
+# https://github.com/rust-lang/rust/issues/112286
+RESTRICT="strip"
+
+QA_PREBUILT="
+	opt/${P}/bin/.*
+	opt/${P}/lib/.*.so*
+	opt/${P}/libexec/.*
+	opt/${P}/lib/rustlib/.*/bin/.*
+	opt/${P}/lib/rustlib/.*/lib/.*
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="opt/${P}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+VERIFY_SIG_OPENPGP_KEY_PATH="/usr/share/openpgp-keys/rust.asc"
+
+pkg_pretend() {
+	if [[ "$(tc-is-softfloat)" != "no" ]] && [[ ${CHOST} == armv7* ]]; then
+		die "${CHOST} is not supported by upstream Rust. You must use a hard float version."
+	fi
+}
+
+src_unpack() {
+	# sadly rust-src tarball does not have corresponding .asc file
+	# so do partial verification
+	if use verify-sig; then
+		for f in ${A}; do
+			if [[ -f ${DISTDIR}/${f}.asc ]]; then
+				verify-sig_verify_detached "${DISTDIR}/${f}" "${DISTDIR}/${f}.asc"
+			fi
+		done
+	fi
+
+	default_src_unpack
+
+	mv "${WORKDIR}/${MY_P}-$(rust_abi)" "${S}" || die
+}
+
+patchelf_for_bin() {
+	local filetype=$(file -b ${1})
+	if [[ ${filetype} == *ELF*interpreter* ]]; then
+		einfo "${1}'s interpreter changed"
+		patchelf ${1} --set-interpreter ${2} || die
+	elif [[ ${filetype} == *script* ]]; then
+		hprefixify ${1}
+	fi
+}
+
+multilib_src_install() {
+	if multilib_is_native_abi; then
+
+	# start native abi install
+	pushd "${S}" >/dev/null || die
+	local analysis std
+	analysis="$(grep 'analysis' ./components)"
+	std="$(grep 'std' ./components)"
+	local components="rustc,cargo,rust-demangler-preview,${std}"
+	use doc && components="${components},rust-docs"
+	use clippy && components="${components},clippy-preview"
+	use rustfmt && components="${components},rustfmt-preview"
+	use rust-analyzer && components="${components},rust-analyzer-preview,${analysis}"
+	# Rust component 'rust-src' is extracted from separate archive
+	if use rust-src; then
+		einfo "Combining rust and rust-src installers"
+		mv -v "${WORKDIR}/rust-src-${PV}/rust-src" "${S}" || die
+		echo rust-src >> ./components || die
+		components="${components},rust-src"
+	fi
+	./install.sh \
+		--components="${components}" \
+		--disable-verify \
+		--prefix="${ED}/opt/${P}" \
+		--mandir="${ED}/opt/${P}/man" \
+		--disable-ldconfig \
+		|| die
+
+	if use prefix; then
+		local interpreter=$(patchelf --print-interpreter "${EPREFIX}"/bin/bash)
+		ebegin "Changing interpreter to ${interpreter} for Gentoo prefix at ${ED}/opt/${P}/bin"
+		find "${ED}/opt/${P}/bin" -type f -print0 | \
+			while IFS=  read -r -d '' filename; do
+				patchelf_for_bin ${filename} ${interpreter} \; || die
+			done
+		eend $?
+	fi
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-demangler
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /opt/rust-bin-<ver>/bin/rustc-<ver>
+		local ver_i="${i}-bin-${PV}"
+		ln -v "${ED}/opt/${P}/bin/${i}" "${ED}/opt/${P}/bin/${ver_i}" || die
+		dosym "../../opt/${P}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "../../../opt/${P}/lib" "/usr/lib/rust/lib-bin-${PV}"
+	dosym "../../../opt/${P}/man" "/usr/lib/rust/man-bin-${PV}"
+	dosym "../../opt/${P}/lib/rustlib" "/usr/lib/rustlib-bin-${PV}"
+	dosym "../../../opt/${P}/share/doc/rust" "/usr/share/doc/${P}"
+
+	# make all capital underscored variable
+	local CARGO_TRIPLET="$(rust_abi)"
+	CARGO_TRIPLET="${CARGO_TRIPLET//-/_}"
+	CARGO_TRIPLET="${CARGO_TRIPLET^^}"
+	cat <<-_EOF_ > "${T}/50${P}"
+	LDPATH="${EPREFIX}/usr/lib/rust/lib-bin-${PV}"
+	MANPATH="${EPREFIX}/usr/lib/rust/man-bin-${PV}"
+	$(usev elibc_musl "CARGO_TARGET_${CARGO_TRIPLET}_RUSTFLAGS=\"-C target-feature=-crt-static\"")
+	_EOF_
+	doenvd "${T}/50${P}"
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+	/usr/bin/cargo
+	/usr/bin/rustdoc
+	/usr/bin/rust-demangler
+	/usr/bin/rust-gdb
+	/usr/bin/rust-gdbgui
+	/usr/bin/rust-lldb
+	/usr/lib/rustlib
+	/usr/lib/rust/lib
+	/usr/lib/rust/man
+	/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+	popd >/dev/null || die
+	#end native abi install
+
+	else
+		local rust_target
+		rust_target="$(rust_abi $(get_abi_CHOST ${v##*.}))"
+		dodir "/opt/${P}/lib/rustlib"
+		cp -vr "${WORKDIR}/rust-${PV}-${rust_target}/rust-std-${rust_target}/lib/rustlib/${rust_target}"\
+			"${ED}/opt/${P}/lib/rustlib" || die
+	fi
+
+	# BUG: installs x86_64 binary on other arches
+	rm -f "${ED}/opt/${P}/lib/rustlib/"*/bin/rust-llvm-dwp || die
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	elog "Rust installs a helper script for calling GDB now,"
+	elog "for your convenience it is installed under /usr/bin/rust-gdb-bin-${PV}."
+
+	if has_version app-editors/emacs; then
+		elog "install app-emacs/rust-mode to get emacs support for rust."
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		elog "install app-vim/rust-vim to get vim support for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust-bin/rust-bin-1.81.0-r100.ebuild b/dev-lang/rust-bin/rust-bin-1.81.0-r100.ebuild
new file mode 100644
index 000000000000..37da74831b9c
--- /dev/null
+++ b/dev-lang/rust-bin/rust-bin-1.81.0-r100.ebuild
@@ -0,0 +1,249 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 18 )
+LLVM_OPTIONAL="yes"
+
+inherit llvm-r1 multilib prefix rust-toolchain toolchain-funcs verify-sig multilib-minimal optfeature
+
+MY_P="rust-${PV}"
+# curl -L static.rust-lang.org/dist/channel-rust-${PV}.toml 2>/dev/null | grep "xz_url.*rust-src"
+MY_SRC_URI="${RUST_TOOLCHAIN_BASEURL%/}/2024-09-05/rust-src-${PV}.tar.xz"
+GENTOO_BIN_BASEURI="https://dev.gentoo.org/~arthurzam/distfiles/${CATEGORY}/${PN}" # omit leading slash
+
+DESCRIPTION="Systems programming language from Mozilla"
+HOMEPAGE="https://www.rust-lang.org/"
+SRC_URI="$(rust_all_arch_uris ${MY_P})
+	rust-src? ( ${MY_SRC_URI} )
+"
+# Keep this separate to allow easy commenting out if not yet built
+SRC_URI+=" sparc? ( ${GENTOO_BIN_BASEURI}/${MY_P}-sparc64-unknown-linux-gnu.tar.xz ) "
+SRC_URI+=" mips? (
+	abi_mips_o32? (
+		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips-unknown-linux-gnu.tar.xz )
+		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mipsel-unknown-linux-gnu.tar.xz )
+	)
+	abi_mips_n64? (
+		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64-unknown-linux-gnuabi64.tar.xz )
+		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64el-unknown-linux-gnuabi64.tar.xz )
+	)
+)"
+SRC_URI+=" riscv? (
+	elibc_musl? ( ${GENTOO_BIN_BASEURI}/${MY_P}-riscv64gc-unknown-linux-musl.tar.xz )
+)"
+SRC_URI+=" ppc64? ( elibc_musl? (
+	big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-powerpc64-unknown-linux-musl.tar.xz )
+	!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-powerpc64le-unknown-linux-musl.tar.xz )
+) )"
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+KEYWORDS="amd64 arm arm64 ~loong ~mips ppc ppc64 ~riscv ~s390 sparc x86"
+IUSE="big-endian clippy cpu_flags_x86_sse2 doc prefix rust-analyzer rust-src rustfmt"
+
+RDEPEND="
+	>=app-eselect/eselect-rust-20190311
+	dev-libs/openssl
+	sys-apps/lsb-release
+	sys-devel/gcc:*
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+BDEPEND="
+	prefix? ( dev-util/patchelf )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+REQUIRED_USE="x86? ( cpu_flags_x86_sse2 )"
+
+# stripping rust may break it (at least on x86_64)
+# https://github.com/rust-lang/rust/issues/112286
+RESTRICT="strip"
+
+QA_PREBUILT="
+	opt/${P}/bin/.*
+	opt/${P}/lib/.*.so*
+	opt/${P}/libexec/.*
+	opt/${P}/lib/rustlib/.*/bin/.*
+	opt/${P}/lib/rustlib/.*/lib/.*
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="opt/${P}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+VERIFY_SIG_OPENPGP_KEY_PATH="/usr/share/openpgp-keys/rust.asc"
+
+pkg_pretend() {
+	if [[ "$(tc-is-softfloat)" != "no" ]] && [[ ${CHOST} == armv7* ]]; then
+		die "${CHOST} is not supported by upstream Rust. You must use a hard float version."
+	fi
+}
+
+src_unpack() {
+	# sadly rust-src tarball does not have corresponding .asc file
+	# so do partial verification
+	if use verify-sig; then
+		for f in ${A}; do
+			if [[ -f ${DISTDIR}/${f}.asc ]]; then
+				verify-sig_verify_detached "${DISTDIR}/${f}" "${DISTDIR}/${f}.asc"
+			fi
+		done
+	fi
+
+	default_src_unpack
+
+	mv "${WORKDIR}/${MY_P}-$(rust_abi)" "${S}" || die
+}
+
+patchelf_for_bin() {
+	local filetype=$(file -b ${1})
+	if [[ ${filetype} == *ELF*interpreter* ]]; then
+		einfo "${1}'s interpreter changed"
+		patchelf ${1} --set-interpreter ${2} || die
+	elif [[ ${filetype} == *script* ]]; then
+		hprefixify ${1}
+	fi
+}
+
+multilib_src_install() {
+	if multilib_is_native_abi; then
+
+	# start native abi install
+	pushd "${S}" >/dev/null || die
+	local analysis std
+	analysis="$(grep 'analysis' ./components)"
+	std="$(grep 'std' ./components)"
+	local components="rustc,cargo,${std}"
+	use doc && components="${components},rust-docs"
+	use clippy && components="${components},clippy-preview"
+	use rustfmt && components="${components},rustfmt-preview"
+	use rust-analyzer && components="${components},rust-analyzer-preview,${analysis}"
+	# Rust component 'rust-src' is extracted from separate archive
+	if use rust-src; then
+		einfo "Combining rust and rust-src installers"
+		mv -v "${WORKDIR}/rust-src-${PV}/rust-src" "${S}" || die
+		echo rust-src >> ./components || die
+		components="${components},rust-src"
+	fi
+	./install.sh \
+		--components="${components}" \
+		--disable-verify \
+		--prefix="${ED}/opt/${P}" \
+		--mandir="${ED}/opt/${P}/man" \
+		--disable-ldconfig \
+		|| die
+
+	if use prefix; then
+		local interpreter=$(patchelf --print-interpreter "${EPREFIX}"/bin/bash)
+		ebegin "Changing interpreter to ${interpreter} for Gentoo prefix at ${ED}/opt/${P}/bin"
+		find "${ED}/opt/${P}/bin" -type f -print0 | \
+			while IFS=  read -r -d '' filename; do
+				patchelf_for_bin ${filename} ${interpreter} \; || die
+			done
+		eend $?
+	fi
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /opt/rust-bin-<ver>/bin/rustc-<ver>
+		local ver_i="${i}-bin-${PV}"
+		ln -v "${ED}/opt/${P}/bin/${i}" "${ED}/opt/${P}/bin/${ver_i}" || die
+		dosym "../../opt/${P}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "../../../opt/${P}/lib" "/usr/lib/rust/lib-bin-${PV}"
+	dosym "../../../opt/${P}/man" "/usr/lib/rust/man-bin-${PV}"
+	dosym "../../opt/${P}/lib/rustlib" "/usr/lib/rustlib-bin-${PV}"
+	dosym "../../../opt/${P}/share/doc/rust" "/usr/share/doc/${P}"
+
+	# make all capital underscored variable
+	local CARGO_TRIPLET="$(rust_abi)"
+	CARGO_TRIPLET="${CARGO_TRIPLET//-/_}"
+	CARGO_TRIPLET="${CARGO_TRIPLET^^}"
+	cat <<-_EOF_ > "${T}/50${P}"
+	LDPATH="${EPREFIX}/usr/lib/rust/lib-bin-${PV}"
+	MANPATH="${EPREFIX}/usr/lib/rust/man-bin-${PV}"
+	$(usev elibc_musl "CARGO_TARGET_${CARGO_TRIPLET}_RUSTFLAGS=\"-C target-feature=-crt-static\"")
+	_EOF_
+	doenvd "${T}/50${P}"
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+	/usr/bin/cargo
+	/usr/bin/rustdoc
+	/usr/bin/rust-gdb
+	/usr/bin/rust-gdbgui
+	/usr/bin/rust-lldb
+	/usr/lib/rustlib
+	/usr/lib/rust/lib
+	/usr/lib/rust/man
+	/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+	popd >/dev/null || die
+	#end native abi install
+
+	else
+		local rust_target
+		rust_target="$(rust_abi $(get_abi_CHOST ${v##*.}))"
+		dodir "/opt/${P}/lib/rustlib"
+		cp -vr "${WORKDIR}/rust-${PV}-${rust_target}/rust-std-${rust_target}/lib/rustlib/${rust_target}"\
+			"${ED}/opt/${P}/lib/rustlib" || die
+	fi
+
+	# BUG: installs x86_64 binary on other arches
+	rm -f "${ED}/opt/${P}/lib/rustlib/"*/bin/rust-llvm-dwp || die
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	elog "Rust installs a helper script for calling GDB now,"
+	elog "for your convenience it is installed under /usr/bin/rust-gdb-bin-${PV}."
+
+	if has_version app-editors/emacs; then
+		optfeature "emacs support for rust" app-emacs/rust-mode
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		optfeature "vim support for rust" app-vim/rust-vim
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust-bin/rust-bin-1.82.0-r100.ebuild b/dev-lang/rust-bin/rust-bin-1.82.0-r100.ebuild
new file mode 100644
index 000000000000..0491c7a35450
--- /dev/null
+++ b/dev-lang/rust-bin/rust-bin-1.82.0-r100.ebuild
@@ -0,0 +1,251 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 19 )
+LLVM_OPTIONAL="yes"
+
+inherit llvm-r1 multilib prefix rust-toolchain toolchain-funcs verify-sig multilib-minimal optfeature
+
+MY_P="rust-${PV}"
+# curl -L static.rust-lang.org/dist/channel-rust-${PV}.toml 2>/dev/null | grep "xz_url.*rust-src"
+MY_SRC_URI="${RUST_TOOLCHAIN_BASEURL%/}/2024-10-17/rust-src-${PV}.tar.xz"
+GENTOO_BIN_BASEURI="https://dev.gentoo.org/~arthurzam/distfiles/${CATEGORY}/${PN}" # omit leading slash
+
+DESCRIPTION="Systems programming language from Mozilla"
+HOMEPAGE="https://www.rust-lang.org/"
+SRC_URI="$(rust_all_arch_uris ${MY_P})
+	rust-src? ( ${MY_SRC_URI} )
+"
+# Keep this separate to allow easy commenting out if not yet built
+SRC_URI+=" sparc? ( ${GENTOO_BIN_BASEURI}/${MY_P}-sparc64-unknown-linux-gnu.tar.xz ) "
+SRC_URI+=" mips? (
+	abi_mips_o32? (
+		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips-unknown-linux-gnu.tar.xz )
+		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mipsel-unknown-linux-gnu.tar.xz )
+	)
+	abi_mips_n64? (
+		big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64-unknown-linux-gnuabi64.tar.xz )
+		!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-mips64el-unknown-linux-gnuabi64.tar.xz )
+	)
+)"
+SRC_URI+=" riscv? (
+	elibc_musl? ( ${GENTOO_BIN_BASEURI}/${MY_P}-riscv64gc-unknown-linux-musl.tar.xz )
+)"
+SRC_URI+=" ppc64? ( elibc_musl? (
+	big-endian?  ( ${GENTOO_BIN_BASEURI}/${MY_P}-powerpc64-unknown-linux-musl.tar.xz )
+	!big-endian? ( ${GENTOO_BIN_BASEURI}/${MY_P}-powerpc64le-unknown-linux-musl.tar.xz )
+) )"
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+KEYWORDS="~amd64 ~arm ~arm64 ~loong ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+IUSE="big-endian clippy cpu_flags_x86_sse2 doc prefix rust-analyzer rust-src rustfmt"
+
+RDEPEND="
+	>=app-eselect/eselect-rust-20190311
+	dev-libs/openssl
+	sys-apps/lsb-release
+	sys-devel/gcc:*
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+BDEPEND="
+	prefix? ( dev-util/patchelf )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+REQUIRED_USE="x86? ( cpu_flags_x86_sse2 )"
+
+# stripping rust may break it (at least on x86_64)
+# https://github.com/rust-lang/rust/issues/112286
+RESTRICT="strip"
+
+QA_PREBUILT="
+	opt/${P}/bin/.*
+	opt/${P}/lib/.*.so*
+	opt/${P}/libexec/.*
+	opt/${P}/lib/rustlib/.*/bin/.*
+	opt/${P}/lib/rustlib/.*/lib/.*
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="opt/${P}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+VERIFY_SIG_OPENPGP_KEY_PATH="/usr/share/openpgp-keys/rust.asc"
+
+pkg_pretend() {
+	if [[ "$(tc-is-softfloat)" != "no" ]] && [[ ${CHOST} == armv7* ]]; then
+		die "${CHOST} is not supported by upstream Rust. You must use a hard float version."
+	fi
+}
+
+src_unpack() {
+	# sadly rust-src tarball does not have corresponding .asc file
+	# so do partial verification
+	if use verify-sig; then
+		for f in ${A}; do
+			if [[ -f ${DISTDIR}/${f}.asc ]]; then
+				verify-sig_verify_detached "${DISTDIR}/${f}" "${DISTDIR}/${f}.asc"
+			fi
+		done
+	fi
+
+	default_src_unpack
+
+	mv "${WORKDIR}/${MY_P}-$(rust_abi)" "${S}" || die
+}
+
+patchelf_for_bin() {
+	local filetype=$(file -b ${1})
+	if [[ ${filetype} == *ELF*interpreter* ]]; then
+		einfo "${1}'s interpreter changed"
+		patchelf ${1} --set-interpreter ${2} || die
+	elif [[ ${filetype} == *script* ]]; then
+		hprefixify ${1}
+	fi
+}
+
+multilib_src_install() {
+	if multilib_is_native_abi; then
+
+	# start native abi install
+	pushd "${S}" >/dev/null || die
+	local analysis std
+	analysis="$(grep 'analysis' ./components)"
+	std="$(grep 'std' ./components)"
+	local components="rustc,cargo,${std}"
+	use doc && components="${components},rust-docs"
+	use clippy && components="${components},clippy-preview"
+	use rustfmt && components="${components},rustfmt-preview"
+	use rust-analyzer && components="${components},rust-analyzer-preview,${analysis}"
+	# Rust component 'rust-src' is extracted from separate archive
+	if use rust-src; then
+		einfo "Combining rust and rust-src installers"
+		mv -v "${WORKDIR}/rust-src-${PV}/rust-src" "${S}" || die
+		echo rust-src >> ./components || die
+		components="${components},rust-src"
+	fi
+	./install.sh \
+		--components="${components}" \
+		--disable-verify \
+		--prefix="${ED}/opt/${P}" \
+		--mandir="${ED}/opt/${P}/man" \
+		--disable-ldconfig \
+		|| die
+
+	docompress /opt/${P}/man/
+
+	if use prefix; then
+		local interpreter=$(patchelf --print-interpreter "${EPREFIX}"/bin/bash)
+		ebegin "Changing interpreter to ${interpreter} for Gentoo prefix at ${ED}/opt/${P}/bin"
+		find "${ED}/opt/${P}/bin" -type f -print0 | \
+			while IFS=  read -r -d '' filename; do
+				patchelf_for_bin ${filename} ${interpreter} \; || die
+			done
+		eend $?
+	fi
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /opt/rust-bin-<ver>/bin/rustc-<ver>
+		local ver_i="${i}-bin-${PV}"
+		ln -v "${ED}/opt/${P}/bin/${i}" "${ED}/opt/${P}/bin/${ver_i}" || die
+		dosym "../../opt/${P}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "../../../opt/${P}/lib" "/usr/lib/rust/lib-bin-${PV}"
+	dosym "../../../opt/${P}/man" "/usr/lib/rust/man-bin-${PV}"
+	dosym "../../opt/${P}/lib/rustlib" "/usr/lib/rustlib-bin-${PV}"
+	dosym "../../../opt/${P}/share/doc/rust" "/usr/share/doc/${P}"
+
+	# make all capital underscored variable
+	local CARGO_TRIPLET="$(rust_abi)"
+	CARGO_TRIPLET="${CARGO_TRIPLET//-/_}"
+	CARGO_TRIPLET="${CARGO_TRIPLET^^}"
+	cat <<-_EOF_ > "${T}/50${P}"
+	LDPATH="${EPREFIX}/usr/lib/rust/lib-bin-${PV}"
+	MANPATH="${EPREFIX}/usr/lib/rust/man-bin-${PV}"
+	$(usev elibc_musl "CARGO_TARGET_${CARGO_TRIPLET}_RUSTFLAGS=\"-C target-feature=-crt-static\"")
+	_EOF_
+	doenvd "${T}/50${P}"
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+	/usr/bin/cargo
+	/usr/bin/rustdoc
+	/usr/bin/rust-gdb
+	/usr/bin/rust-gdbgui
+	/usr/bin/rust-lldb
+	/usr/lib/rustlib
+	/usr/lib/rust/lib
+	/usr/lib/rust/man
+	/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+	popd >/dev/null || die
+	#end native abi install
+
+	else
+		local rust_target
+		rust_target="$(rust_abi $(get_abi_CHOST ${v##*.}))"
+		dodir "/opt/${P}/lib/rustlib"
+		cp -vr "${WORKDIR}/rust-${PV}-${rust_target}/rust-std-${rust_target}/lib/rustlib/${rust_target}"\
+			"${ED}/opt/${P}/lib/rustlib" || die
+	fi
+
+	# BUG: installs x86_64 binary on other arches
+	rm -f "${ED}/opt/${P}/lib/rustlib/"*/bin/rust-llvm-dwp || die
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	elog "Rust installs a helper script for calling GDB now,"
+	elog "for your convenience it is installed under /usr/bin/rust-gdb-bin-${PV}."
+
+	if has_version app-editors/emacs; then
+		optfeature "emacs support for rust" app-emacs/rust-mode
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		optfeature "vim support for rust" app-vim/rust-vim
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust-common/Manifest b/dev-lang/rust-common/Manifest
new file mode 100644
index 000000000000..040c9674109c
--- /dev/null
+++ b/dev-lang/rust-common/Manifest
@@ -0,0 +1,7 @@
+DIST rustc-1.81.0-src.tar.xz 216743872 BLAKE2B d9f52da9092d0723c862ebbb2dc351cad0670be6872f691b4c9f36faf06803f072720ebd04f06745c355d807991b38312cc830b12d6d3f50b0574bb7325340b7 SHA512 b8a837ced521d2ca2c7f228a0640da591384519e4dbc1ae768524d50616da6abbd2f7bdae3777caebc0447dac91bf76481282ce5a2264d7f30e173caa6321a51
+DIST rustc-1.81.0-src.tar.xz.asc 801 BLAKE2B 01cd9f386d3fd73f4eb43b14d7d479ebababb8640abbff170e697817b94b8a18edd801c6047ecf3c084a0a51764c5e4f3f4bd6b00e8ae000ef0b850e9506572a SHA512 19c0da9d67f2bd9fd79a2078f0f486ee7fad5646a09a609b7e30d9531851955ae8df0ec69f9ddc09e2fd6e74d529648335b0fda833839c88c54c84494ec1988e
+DIST rustc-1.82.0-src.tar.xz 219769328 BLAKE2B 611f33e134c2d459c9af1695c0a4d033df93afc986e91a17fceb0dd293fb4ffbd5f7475ef571d36cecf49da6c3fdb3801c98d7f72f9dd1c39e42502f649b192f SHA512 d158c7c71c1814bde2a3ec3cbeabe34949bd3201b730c0d7ec6baad4158bb28dd13696c430a6b99dc38b9d23ad7ddf8dde7d2487cbfbbbe9c3473016994210f0
+DIST rustc-1.82.0-src.tar.xz.asc 801 BLAKE2B 8138fb15b8d7ec15be45378fe663207a8e87e3c527348ab079995b1840a771ed6e9d5464eb8855ac9e006c0cfcf54b1a4fea489d31e6c9899cb03e6f4c737b67 SHA512 3cd6b27e72041baf9996efa10f25aca2e04f3e3727b60ecfd90c1bef9c52d216d2dc130802f935b110e35766645a27637a01661aa8d5acf02bf64b02a107c93c
+EBUILD rust-common-1.81.0.ebuild 1168 BLAKE2B 70a4586b15677069a5e84b0a444ef6ee44e895bf5ca2b06e5d195a4358ced7a5cffe7f869da1d136ba50654deb3a5811675f26863f1c09ad0af3bd19ca8ba7c8 SHA512 9c013a8050523f2090cb3c845197d67c45591666c10b09d3942bec01c85da9581bab707658d749a66441ddfff8c6d32a54fa80455079a7360e5edb82f26300b4
+EBUILD rust-common-1.82.0.ebuild 1236 BLAKE2B 1a79522d016d9f371def8d2d5cfe60eac7717b98469e57da2c27ec7ef35443e411e0c7ffce8f5f17aebbe895b63d248f74f791bb46b6128cc1c42fa39a7598e7 SHA512 dc5ef233e9f7f3085b6761224e9caf52a96e97548e1c59bdbdc01e215fd2067642c5d8bcecd291e3ce55c82283643e35f2232d2ba0e9b2884d3d9e73479a21dd
+MISC metadata.xml 324 BLAKE2B 25e471eacc689a8af7e0251146bf712b020a10d55e3cb48285f174996ec66db8bbd146d4737db15ac3b2abf3e1f0415277b9bdca84d94f9b08a56e9242a4fcbf SHA512 723c102ec7017eeb72bfd6f37c16e2705e61bb626a93e5127eca2275a9367cefbccdd846fe8a699bc1192ae52cafe236f3fb6261fa6db361564b34880a9db2fb
diff --git a/dev-lang/rust-common/metadata.xml b/dev-lang/rust-common/metadata.xml
new file mode 100644
index 000000000000..b5c189c5f9b0
--- /dev/null
+++ b/dev-lang/rust-common/metadata.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>rust@gentoo.org</email>
+		<name>Rust Project</name>
+	</maintainer>
+	<upstream>
+		<remote-id type="github">rust-lang/rust</remote-id>
+	</upstream>
+</pkgmetadata>
diff --git a/dev-lang/rust-common/rust-common-1.81.0.ebuild b/dev-lang/rust-common/rust-common-1.81.0.ebuild
new file mode 100644
index 000000000000..b977c5aa1b92
--- /dev/null
+++ b/dev-lang/rust-common/rust-common-1.81.0.ebuild
@@ -0,0 +1,52 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit bash-completion-r1
+
+DESCRIPTION="Common files shared between multiple slots of Rust"
+HOMEPAGE="https://www.rust-lang.org/"
+
+if [[ ${PV} = *beta* ]]; then
+	betaver=${PV//*beta}
+	BETA_SNAPSHOT="${betaver:0:4}-${betaver:4:2}-${betaver:6:2}"
+	SRC="${BETA_SNAPSHOT}/rustc-beta-src.tar.xz -> rustc-${PV}-src.tar.xz"
+else
+	ABI_VER="$(ver_cut 1-2)"
+	MY_P="rustc-${PV}"
+	SRC="${MY_P}-src.tar.xz"
+fi
+
+SRC_URI="
+	https://static.rust-lang.org/dist/${SRC}
+	verify-sig? ( https://static.rust-lang.org/dist/${SRC}.asc )
+"
+S="${WORKDIR}/${MY_P}-src"
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT=0
+KEYWORDS="amd64 arm arm64 ~loong ~mips ppc ppc64 ~riscv sparc x86"
+IUSE="verify-sig"
+
+RDEPEND="
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+
+src_unpack() {
+	# Avoid unpacking the whole tarball which would need check-reqs
+	tar -xf "${DISTDIR}"/${SRC} ${SRC%%.tar.xz}/src/tools/cargo/src/etc/cargo.bashcomp.sh || die
+}
+
+src_configure() {
+	:
+}
+
+src_compile() {
+	:
+}
+
+src_install() {
+	newbashcomp src/tools/cargo/src/etc/cargo.bashcomp.sh cargo
+}
diff --git a/dev-lang/rust-common/rust-common-1.82.0.ebuild b/dev-lang/rust-common/rust-common-1.82.0.ebuild
new file mode 100644
index 000000000000..0d4b5aa7b8ae
--- /dev/null
+++ b/dev-lang/rust-common/rust-common-1.82.0.ebuild
@@ -0,0 +1,53 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit bash-completion-r1
+
+DESCRIPTION="Common files shared between multiple slots of Rust"
+HOMEPAGE="https://www.rust-lang.org/"
+
+if [[ ${PV} = *beta* ]]; then
+	betaver=${PV//*beta}
+	BETA_SNAPSHOT="${betaver:0:4}-${betaver:4:2}-${betaver:6:2}"
+	SRC="${BETA_SNAPSHOT}/rustc-beta-src.tar.xz -> rustc-${PV}-src.tar.xz"
+else
+	ABI_VER="$(ver_cut 1-2)"
+	MY_P="rustc-${PV}"
+	SRC="${MY_P}-src.tar.xz"
+fi
+
+SRC_URI="
+	https://static.rust-lang.org/dist/${SRC}
+	verify-sig? ( https://static.rust-lang.org/dist/${SRC}.asc )
+"
+S="${WORKDIR}/${MY_P}-src"
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT=0
+KEYWORDS="~amd64 ~arm ~arm64 ~loong ~mips ~ppc ~ppc64 ~riscv ~sparc ~x86"
+IUSE="verify-sig"
+
+# Legacy non-slotted versions bash completions will collide.
+RDEPEND="
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+
+src_unpack() {
+	# Avoid unpacking the whole tarball which would need check-reqs
+	tar -xf "${DISTDIR}"/${SRC} ${SRC%%.tar.xz}/src/tools/cargo/src/etc/cargo.bashcomp.sh || die
+}
+
+src_configure() {
+	:
+}
+
+src_compile() {
+	:
+}
+
+src_install() {
+	newbashcomp src/tools/cargo/src/etc/cargo.bashcomp.sh cargo
+}
diff --git a/dev-lang/rust/Manifest b/dev-lang/rust/Manifest
index 9622026fd3c5..9e31f7549ee6 100644
--- a/dev-lang/rust/Manifest
+++ b/dev-lang/rust/Manifest
@@ -260,12 +260,20 @@ DIST rustc-1.81.0-src.tar.xz 216743872 BLAKE2B d9f52da9092d0723c862ebbb2dc351cad
 DIST rustc-1.81.0-src.tar.xz.asc 801 BLAKE2B 01cd9f386d3fd73f4eb43b14d7d479ebababb8640abbff170e697817b94b8a18edd801c6047ecf3c084a0a51764c5e4f3f4bd6b00e8ae000ef0b850e9506572a SHA512 19c0da9d67f2bd9fd79a2078f0f486ee7fad5646a09a609b7e30d9531851955ae8df0ec69f9ddc09e2fd6e74d529648335b0fda833839c88c54c84494ec1988e
 DIST rustc-1.82.0-src.tar.xz 219769328 BLAKE2B 611f33e134c2d459c9af1695c0a4d033df93afc986e91a17fceb0dd293fb4ffbd5f7475ef571d36cecf49da6c3fdb3801c98d7f72f9dd1c39e42502f649b192f SHA512 d158c7c71c1814bde2a3ec3cbeabe34949bd3201b730c0d7ec6baad4158bb28dd13696c430a6b99dc38b9d23ad7ddf8dde7d2487cbfbbbe9c3473016994210f0
 DIST rustc-1.82.0-src.tar.xz.asc 801 BLAKE2B 8138fb15b8d7ec15be45378fe663207a8e87e3c527348ab079995b1840a771ed6e9d5464eb8855ac9e006c0cfcf54b1a4fea489d31e6c9899cb03e6f4c737b67 SHA512 3cd6b27e72041baf9996efa10f25aca2e04f3e3727b60ecfd90c1bef9c52d216d2dc130802f935b110e35766645a27637a01661aa8d5acf02bf64b02a107c93c
+EBUILD rust-1.71.1-r100.ebuild 22834 BLAKE2B b3322d93746bfcce7ad9be1256875f227e25dc89fd56ef8d4887dc9b2003402900e6bb6567ffcc63c8d52c2233a8a458df1cb4393adc423e060b31fc5ac817b9 SHA512 c6710af1e909c30fd5a4b2a11b3e287b8c5ae89deea523aaa7878f4717bbe395671fed36936ceacc6f70411fee167bba6b98e3170d9e02cef04db5a92ecd0aa0
 EBUILD rust-1.71.1.ebuild 23467 BLAKE2B cc179525f8be2375e4bb0651b3210986254d027414bdef178a33309a7d99deba0a656454b5f1c84a852be104c93edaf5eec24c6f65f067365ed0a202d140fde0 SHA512 2a81e2a2c49d19d88c7794d809648a4630ca476410ea3270a772fa8d315b56c1b1698fc523ff5451a4336e23993f76d444c6c3b12d491ed89019f075a6fceb83
+EBUILD rust-1.74.1-r100.ebuild 24485 BLAKE2B 3e2d5225d9e798054d8f276e8acdb5287736d4b31d20ed9a7676a2c55a8ece673f7e1bf49278a46b2f4c69ce43682c53a1d13eb474c5aaf942786b86af825be3 SHA512 31c2f2b9cc38cc558680e6eaf7c5e9ca7ac920be674df41f057efd14865b1cb7e6bae7f0417bdc346ad4a617b9274a6d9d724139393812d96c12f1d24dac8415
 EBUILD rust-1.74.1.ebuild 25118 BLAKE2B 4de0c3973eb9fff948c6254f6696f0de0b36f4d507fba035ef3873de2cbb92842bf409b371036fda337f6c66fb89fd156f4fbe21c12a72b3ef5ccada586ecfae SHA512 c24a3a85ba60916f12be526f0641546e921b5433f883516bf8e7c5b74362b0c8205c27533094911edc1eca8235bfebfeb820fb316d954509a96d200cf2574151
 EBUILD rust-1.75.0-r1.ebuild 25282 BLAKE2B eebe5ea3b922221821b6dba77dea369248e5c6d952c45d1ca70d6952596b97c891fc29f502dad0192a690939a8f3fad6b5b2538daf72365b0113e8669a7f43d2 SHA512 96aaaccaf93d27b099ba0ec85882ff26b2eaa2021ca17768f607b5043b872a36e4c9d3ac13b4a7b8cbda6f3d7084edb1db11173d081a8972c51aa71a0e506935
+EBUILD rust-1.75.0-r100.ebuild 24649 BLAKE2B e506e752183a0bd7ae304add6a90148b7dcec710d8f6dfd00daf8afb3a4fe304ecb1bc83ea0567578b0e530f383aa04d6e44a2d885285003d180fb40ba0d013f SHA512 8ee4522be25cabfc80dfc29d2557ee28cf3210054d8618c83afe3fba8d3a80e9ebb3c03bfbe76c01bed1d1070612b3b0b900510e41fd6def2da7b2e3eefe3d29
+EBUILD rust-1.77.1-r100.ebuild 24611 BLAKE2B 84c76d74664e4186d64c564cdd0134263e4ceedac808af0ce8c01ca8813de3f0b8bc9dbff5589c870f8d90a1bd3f3e263cae2aaa0d59ea0ad27b22d215900fb3 SHA512 3eeafd048319e522d064d222bd19fed133dfa4be0b6de6ab98aa1f633d8f6985f28ddb547752ea77a41ced92fe5e762ceee4b0803f29fcaf53b141570d7c43e7
 EBUILD rust-1.77.1.ebuild 25245 BLAKE2B d514569674cc230e4959a9e73d38f14b263dac22fa7ec3f91c417d142caf65f5920ab44bc28e0e23c32bc7113f73c1b27fbf74a82215e35c33dd97ac4b3f2ee4 SHA512 b36d066101a248f31560fd7db39f9367e42618ba882c43df3807fc70823ec319365096623e2d41dd37a9babd83d2d55c007145ae7185a1818bd926783ad3eb5c
+EBUILD rust-1.79.0-r100.ebuild 24846 BLAKE2B 17c985d69e237feb9f57c875a868f6b10eab59ac01f4a9cb958894bbb58170456ee69b794c94e51ee28b55b7e860846c4cbb63a022bafbfb8073a904f7b419d0 SHA512 662017cd52dd1c4edaa9658fde4a33ae58a7ec897bf167d550777cdcb1fa829aa316cb87fa853fd79fc55602121a38997eaa6712c059a9d3d5def6171434c5ca
 EBUILD rust-1.79.0.ebuild 25480 BLAKE2B d2087cce728db5d5383e324476ba5380f95776d0d4742917742d9bd332b643c498f7a30ae32045d44a7aaeba7f235a614add12aa739765e4c308a02027ef02b4 SHA512 04ca9c5dcf088a0398ab05a39eb77119dd495248217fffe7451736cdee3c3ab1a274a54c4b6257384d39678cc87102d3e2ea3f0dcb40cbd657a0e07b7b93eaac
+EBUILD rust-1.80.1-r100.ebuild 24761 BLAKE2B f71f6e88c4b135400e8cb2e58e1bded0296eb7a52f5d888f78a8cb0fe4143e8e2d42ddffc304c6768dfadfea00585acabff3404f28c249144b3a788c3d82306b SHA512 383acc3254e55953ca4918562b0a51e9ee0386c92cbfedfef9a7a6d24018b07238ed9d5cead88d20ffecda241de1dc1687f44e97fcbe689715281146499295c9
 EBUILD rust-1.80.1.ebuild 25412 BLAKE2B 4905111b95c2710d39f414f7eb645a5906e24258608a3fd4b3e4d160846ca0a546a113474079ff8772012469bda7d7b915dc3de0ebd7c3f8038df3e35ef5efe2 SHA512 e10c2e029100faa54caec1fe98fb19c23c8b06a1f6b1a52b899eb1761945e7de1a835e4aa2526c060b952cd12d52f70a28118bff80d2ba51053cf88eef460dde
+EBUILD rust-1.81.0-r100.ebuild 24858 BLAKE2B 9806f184b606e3e8928415ff6598a0ab5e1675d422de7888b81bfe3be71e008542413577e1043f255b57686b0829e5bcb9e89d2438047f96ff165fb7fcd26650 SHA512 79b0c354e8b6f05ea4d98e95dfc115d2e30237d181124245f65db9dc7c9cb55ce204d4f5df2f667a88461a9459f011cc67b7d348766bfaef957f36de8a6e24c8
 EBUILD rust-1.81.0.ebuild 25380 BLAKE2B c213ba368f9f49be7e3c6f0260684f9b7c7f1afa7727ca7a7db7802b5a40a9009756464f9fb5a3165cbb5161e3e18181973a67d97a2e1cde13e4d6733ac5f2b9 SHA512 56501ddc2d06c2e7ff98e704a255d850897028d115588bca21ba43530f6d8a39ad684642e802faded8ae83da06dd6d6e503c76759e6d1df9f0fdebc0f6d6ec6c
+EBUILD rust-1.82.0-r100.ebuild 25072 BLAKE2B aff538513d14f3941909b55f7df4aa8be8d5486ce36b64d93c2016d84983299f49e1dfaf928cb8dfd0c4e430cb517e1cc80bc45b1fb3179108a508fad1317ec8 SHA512 3f475d92940070bff90f7163e86cfdf637bb838c89cb19791bc97cffa34e9dfe82b764813dfd86b7e6f2ec819fa9b4387a880f9a6a13c1a14e446e8aa39e60f7
 EBUILD rust-1.82.0.ebuild 25639 BLAKE2B 276ef627db58d7d7cb85f4f84f0c68ef36da91822d75c83f13c14ac73b35729b2ce354f79506122449cdb8517bb34a6c1f13dc158987e05b088ae96e1ec33f11 SHA512 8dd95a85eff44f5567ab6f038399cddbd111213810a1390dbef0ed9d68284c46368511006158935db3d9b70f06851e7e3a562a9c0044f85a532dc6c812a38c24
 MISC metadata.xml 1945 BLAKE2B cf3ed0b2550564faee94e53e21deb0e905b38cd45c503ba18f55c36f13093fa65c4dac8e544c891c9378b2ce32912cab1a1a0b61a277ff29f5288b672f4a218d SHA512 a28dc5b78e15aaeec5ccf028a053c3df6a12b24bcfb6e8948e2e25b3c04cc8ede5973f1e57c723081355853152baa8c8219e36bb603b714628e71587d2bba45e
diff --git a/dev-lang/rust/rust-1.71.1-r100.ebuild b/dev-lang/rust/rust-1.71.1-r100.ebuild
new file mode 100644
index 000000000000..d6cb947db404
--- /dev/null
+++ b/dev-lang/rust/rust-1.71.1-r100.ebuild
@@ -0,0 +1,728 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 16 )
+PYTHON_COMPAT=( python3_{10..12} )
+
+inherit check-reqs estack flag-o-matic llvm-r1 multiprocessing \
+	multilib multilib-build python-any-r1 rust-toolchain toolchain-funcs verify-sig
+
+if [[ ${PV} = *beta* ]]; then
+	betaver=${PV//*beta}
+	BETA_SNAPSHOT="${betaver:0:4}-${betaver:4:2}-${betaver:6:2}"
+	MY_P="rustc-beta"
+	SRC="${BETA_SNAPSHOT}/rustc-beta-src.tar.xz -> rustc-${PV}-src.tar.xz"
+else
+	MY_P="rustc-${PV}"
+	SRC="${MY_P}-src.tar.xz"
+	KEYWORDS="amd64 arm arm64 ~loong ~mips ppc ppc64 ~riscv sparc x86"
+fi
+
+S="${WORKDIR}/${MY_P}-src"
+
+RUST_STAGE0_VERSION="1.$(($(ver_cut 2) - 1)).0"
+
+DESCRIPTION="Language empowering everyone to build reliable and efficient software"
+HOMEPAGE="https://www.rust-lang.org/"
+
+SRC_URI="
+	https://static.rust-lang.org/dist/${SRC}
+	verify-sig? ( https://static.rust-lang.org/dist/${SRC}.asc )
+	!system-bootstrap? ( $(rust_all_arch_uris rust-${RUST_STAGE0_VERSION}) )
+"
+
+# keep in sync with llvm ebuild of the same version as bundled one.
+ALL_LLVM_TARGETS=( AArch64 AMDGPU ARM AVR BPF Hexagon Lanai LoongArch Mips MSP430
+	NVPTX PowerPC RISCV Sparc SystemZ VE WebAssembly X86 XCore )
+ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
+LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/(-)?}
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4 UoI-NCSA"
+SLOT="${PV}"
+
+IUSE="big-endian clippy cpu_flags_x86_sse2 debug dist doc llvm-libunwind +lto miri nightly parallel-compiler rustfmt rust-analyzer rust-src system-bootstrap system-llvm test wasm ${ALL_LLVM_TARGETS[*]}"
+
+LLVM_DEPEND=()
+# splitting usedeps needed to avoid CI/pkgcheck's UncheckableDep limitation
+for _x in "${ALL_LLVM_TARGETS[@]}"; do
+	LLVM_DEPEND+=( "	${_x}? ( $(llvm_gen_dep "sys-devel/llvm:\${LLVM_SLOT}[${_x}]") )" )
+done
+LLVM_DEPEND+=( "	wasm? ( $(llvm_gen_dep 'sys-devel/lld:${LLVM_SLOT}') )" )
+LLVM_DEPEND+=( "	$(llvm_gen_dep 'sys-devel/llvm:${LLVM_SLOT}')" )
+
+# to bootstrap we need at least exactly previous version, or same.
+# most of the time previous versions fail to bootstrap with newer
+# for example 1.47.x, requires at least 1.46.x, 1.47.x is ok,
+# but it fails to bootstrap with 1.48.x
+# https://github.com/rust-lang/rust/blob/${PV}/src/stage0.json
+RUST_DEP_PREV="$(ver_cut 1).$(($(ver_cut 2) - 1))*"
+RUST_DEP_CURR="$(ver_cut 1).$(ver_cut 2)*"
+BOOTSTRAP_DEPEND="||
+	(
+		=dev-lang/rust-"${RUST_DEP_PREV}"
+		=dev-lang/rust-bin-"${RUST_DEP_PREV}"
+		=dev-lang/rust-"${RUST_DEP_CURR}"
+		=dev-lang/rust-bin-"${RUST_DEP_CURR}"
+	)
+"
+
+BDEPEND="${PYTHON_DEPS}
+	app-eselect/eselect-rust
+	|| (
+		>=sys-devel/gcc-4.7
+		>=sys-devel/clang-3.5
+	)
+	system-bootstrap? ( ${BOOTSTRAP_DEPEND} )
+	!system-llvm? (
+		>=dev-build/cmake-3.13.4
+		app-alternatives/ninja
+	)
+	test? ( dev-debug/gdb )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+DEPEND="
+	>=app-arch/xz-utils-5.2
+	net-misc/curl:=[http2,ssl]
+	sys-libs/zlib:=
+	dev-libs/openssl:0=
+	system-llvm? (
+		${LLVM_DEPEND[*]}
+		llvm-libunwind? ( sys-libs/llvm-libunwind:= )
+	)
+	!system-llvm? (
+		!llvm-libunwind? (
+			elibc_musl? ( sys-libs/libunwind:= )
+		)
+	)
+"
+
+RDEPEND="${DEPEND}
+	app-eselect/eselect-rust
+	dev-lang/rust-common
+	sys-apps/lsb-release
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+
+REQUIRED_USE="|| ( ${ALL_LLVM_TARGETS[*]} )
+	miri? ( nightly )
+	parallel-compiler? ( nightly )
+	rust-analyzer? ( rust-src )
+	test? ( ${ALL_LLVM_TARGETS[*]} )
+	wasm? ( llvm_targets_WebAssembly )
+	x86? ( cpu_flags_x86_sse2 )
+"
+
+# we don't use cmake.eclass, but can get a warning
+CMAKE_WARN_UNUSED_CLI=no
+
+QA_FLAGS_IGNORED="
+	usr/lib/${PN}/${PV}/bin/.*
+	usr/lib/${PN}/${PV}/libexec/.*
+	usr/lib/${PN}/${PV}/lib/lib.*.so
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_SONAME="
+	usr/lib/${PN}/${PV}/lib/lib.*.so.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_PRESTRIPPED="
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/rust-llvm-dwp
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/self-contained/crtn.o
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="usr/lib/${PN}/${PV}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+# causes double bootstrap
+RESTRICT="test"
+
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/rust.asc
+
+PATCHES=(
+	"${FILESDIR}"/1.71.1-fix-bootstrap-version-comparison.patch
+	"${FILESDIR}"/1.70.0-ignore-broken-and-non-applicable-tests.patch
+	"${FILESDIR}"/1.62.1-musl-dynamic-linking.patch
+	"${FILESDIR}"/1.67.0-doc-wasm.patch
+)
+
+toml_usex() {
+	usex "${1}" true false
+}
+
+bootstrap_rust_version_check() {
+	# never call from pkg_pretend. eselect-rust may be not installed yet.
+	[[ ${MERGE_TYPE} == binary ]] && return
+	local rustc_wanted="$(ver_cut 1).$(($(ver_cut 2) - 1))"
+	local rustc_toonew="$(ver_cut 1).$(($(ver_cut 2) + 1))"
+	local rustc_version=( $(eselect --brief rust show 2>/dev/null) )
+	rustc_version=${rustc_version[0]#rust-bin-}
+	rustc_version=${rustc_version#rust-}
+
+	[[ -z "${rustc_version}" ]] && die "Failed to determine rust version, check 'eselect rust' output"
+
+	if ver_test "${rustc_version}" -lt "${rustc_wanted}" ; then
+		eerror "Rust >=${rustc_wanted} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too old"
+	elif ver_test "${rustc_version}" -ge "${rustc_toonew}" ; then
+		eerror "Rust <${rustc_toonew} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too new"
+	else
+		einfo "Using rust ${rustc_version} to build"
+	fi
+}
+
+pre_build_checks() {
+	local M=8192
+	# multiply requirements by 1.3 if we are doing x86-multilib
+	if use amd64; then
+		M=$(( $(usex abi_x86_32 13 10) * ${M} / 10 ))
+	fi
+	M=$(( $(usex clippy 128 0) + ${M} ))
+	M=$(( $(usex miri 128 0) + ${M} ))
+	M=$(( $(usex rustfmt 256 0) + ${M} ))
+	# add 2G if we compile llvm and 256M per llvm_target
+	if ! use system-llvm; then
+		M=$(( 2048 + ${M} ))
+		local ltarget
+		for ltarget in ${ALL_LLVM_TARGETS[@]}; do
+			M=$(( $(usex ${ltarget} 256 0) + ${M} ))
+		done
+	fi
+	M=$(( $(usex wasm 256 0) + ${M} ))
+	M=$(( $(usex debug 2 1) * ${M} ))
+	eshopts_push -s extglob
+	if is-flagq '-g?(gdb)?([1-9])'; then
+		M=$(( 15 * ${M} / 10 ))
+	fi
+	eshopts_pop
+	M=$(( $(usex system-bootstrap 0 1024) + ${M} ))
+	M=$(( $(usex doc 256 0) + ${M} ))
+	CHECKREQS_DISK_BUILD=${M}M check-reqs_pkg_${EBUILD_PHASE}
+}
+
+llvm_check_deps() {
+	has_version -r "sys-devel/llvm:${LLVM_SLOT}[${LLVM_TARGET_USEDEPS// /,}]"
+}
+
+# Is LLVM being linked against libc++?
+is_libcxx_linked() {
+	local code='#include <ciso646>
+#if defined(_LIBCPP_VERSION)
+	HAVE_LIBCXX
+#endif
+'
+	local out=$($(tc-getCXX) ${CXXFLAGS} ${CPPFLAGS} -x c++ -E -P - <<<"${code}") || return 1
+	[[ ${out} == *HAVE_LIBCXX* ]]
+}
+
+pkg_pretend() {
+	pre_build_checks
+}
+
+pkg_setup() {
+	pre_build_checks
+	python-any-r1_pkg_setup
+
+	export LIBGIT2_NO_PKG_CONFIG=1 #749381
+
+	use system-bootstrap && bootstrap_rust_version_check
+
+	if use system-llvm; then
+		llvm-r1_pkg_setup
+
+		local llvm_config="$(get_llvm_prefix)/bin/llvm-config"
+		export LLVM_LINK_SHARED=1
+		export RUSTFLAGS="${RUSTFLAGS} -Lnative=$("${llvm_config}" --libdir)"
+	fi
+}
+
+esetup_unwind_hack() {
+	# https://bugs.gentoo.org/870280
+	# this is a hack needed to bootstrap with libgcc_s linked tarball on llvm-libunwind system.
+	# it should trigger for internal bootstrap or system-bootstrap with rust-bin.
+	# the whole idea is for stage0 to bootstrap with fake libgcc_s.
+	# final stage will receive -L${T}/lib but not -lgcc_s args, producing clean compiler.
+	local fakelib="${T}/fakelib"
+	mkdir -p "${fakelib}" || die
+	# we need both symlinks, one for cargo runtime, other for linker.
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so.1" || die
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so" || die
+	export LD_LIBRARY_PATH="${fakelib}"
+	export RUSTFLAGS+=" -L${fakelib}"
+	# this is a literally magic variable that gets through cargo cache, without it some
+	# crates ignore RUSTFLAGS.
+	# this variable can not contain leading space.
+	export MAGIC_EXTRA_RUSTFLAGS+="${MAGIC_EXTRA_RUSTFLAGS:+ }-L${fakelib}"
+}
+
+src_prepare() {
+	if ! use system-bootstrap; then
+		has_version sys-devel/gcc || esetup_unwind_hack
+		local rust_stage0_root="${WORKDIR}"/rust-stage0
+		local rust_stage0="rust-${RUST_STAGE0_VERSION}-$(rust_abi)"
+
+		"${WORKDIR}/${rust_stage0}"/install.sh --disable-ldconfig \
+			--without=rust-docs-json-preview,rust-docs --destdir="${rust_stage0_root}" --prefix=/ || die
+	fi
+
+	default
+}
+
+src_configure() {
+	filter-lto # https://bugs.gentoo.org/862109 https://bugs.gentoo.org/866231
+
+	local rust_target="" rust_targets="" arch_cflags
+
+	# Collect rust target names to compile standard libs for all ABIs.
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_targets+=",\"$(rust_abi $(get_abi_CHOST ${v##*.}))\""
+	done
+	if use wasm; then
+		rust_targets+=",\"wasm32-unknown-unknown\""
+		if use system-llvm; then
+			# un-hardcode rust-lld linker for this target
+			# https://bugs.gentoo.org/715348
+			sed -i '/linker:/ s/rust-lld/wasm-ld/' compiler/rustc_target/src/spec/wasm_base.rs || die
+		fi
+	fi
+	rust_targets="${rust_targets#,}"
+
+	# cargo and rustdoc are mandatory and should always be included
+	local tools='"cargo","rustdoc", "rust-demangler"'
+	use clippy && tools+=',"clippy"'
+	use miri && tools+=',"miri"'
+	use rustfmt && tools+=',"rustfmt"'
+	use rust-analyzer && tools+=',"rust-analyzer"'
+	use rust-src && tools+=',"src"'
+
+	local rust_stage0_root
+	if use system-bootstrap; then
+		local printsysroot
+		printsysroot="$(rustc --print sysroot || die "Can't determine rust's sysroot")"
+		rust_stage0_root="${printsysroot}"
+	else
+		rust_stage0_root="${WORKDIR}"/rust-stage0
+	fi
+	# in case of prefix it will be already prefixed, as --print sysroot returns full path
+	[[ -d ${rust_stage0_root} ]] || die "${rust_stage0_root} is not a directory"
+
+	rust_target="$(rust_abi)"
+
+	local cm_btype="$(usex debug DEBUG RELEASE)"
+	cat <<- _EOF_ > "${S}"/config.toml
+		changelog-seen = 2
+		[llvm]
+		download-ci-llvm = false
+		optimize = $(toml_usex !debug)
+		release-debuginfo = $(toml_usex debug)
+		assertions = $(toml_usex debug)
+		ninja = true
+		targets = "${LLVM_TARGETS// /;}"
+		experimental-targets = ""
+		link-shared = $(toml_usex system-llvm)
+		$(if is_libcxx_linked; then
+			# https://bugs.gentoo.org/732632
+			echo "use-libcxx = true"
+			echo "static-libstdcpp = false"
+		fi)
+		$(case "${rust_target}" in
+			i586-*-linux-*)
+				# https://github.com/rust-lang/rust/issues/93059
+				echo 'cflags = "-fcf-protection=none"'
+				echo 'cxxflags = "-fcf-protection=none"'
+				echo 'ldflags = "-fcf-protection=none"'
+				;;
+			*)
+				;;
+		esac)
+		enable-warnings = false
+		[llvm.build-config]
+		CMAKE_VERBOSE_MAKEFILE = "ON"
+		CMAKE_C_FLAGS_${cm_btype} = "${CFLAGS}"
+		CMAKE_CXX_FLAGS_${cm_btype} = "${CXXFLAGS}"
+		CMAKE_EXE_LINKER_FLAGS_${cm_btype} = "${LDFLAGS}"
+		CMAKE_MODULE_LINKER_FLAGS_${cm_btype} = "${LDFLAGS}"
+		CMAKE_SHARED_LINKER_FLAGS_${cm_btype} = "${LDFLAGS}"
+		CMAKE_STATIC_LINKER_FLAGS_${cm_btype} = "${ARFLAGS}"
+		[build]
+		build-stage = 2
+		test-stage = 2
+		build = "${rust_target}"
+		host = ["${rust_target}"]
+		target = [${rust_targets}]
+		cargo = "${rust_stage0_root}/bin/cargo"
+		rustc = "${rust_stage0_root}/bin/rustc"
+		rustfmt = "${rust_stage0_root}/bin/rustfmt"
+		docs = $(toml_usex doc)
+		compiler-docs = false
+		submodules = false
+		python = "${EPYTHON}"
+		locked-deps = true
+		vendor = true
+		extended = true
+		tools = [${tools}]
+		verbose = 2
+		sanitizers = false
+		profiler = true
+		cargo-native-static = false
+		[install]
+		prefix = "${EPREFIX}/usr/lib/${PN}/${PV}"
+		sysconfdir = "etc"
+		docdir = "share/doc/rust"
+		bindir = "bin"
+		libdir = "lib"
+		mandir = "share/man"
+		[rust]
+		# https://github.com/rust-lang/rust/issues/54872
+		codegen-units-std = 1
+		optimize = true
+		debug = $(toml_usex debug)
+		debug-assertions = $(toml_usex debug)
+		debug-assertions-std = $(toml_usex debug)
+		debuginfo-level = $(usex debug 2 0)
+		debuginfo-level-rustc = $(usex debug 2 0)
+		debuginfo-level-std = $(usex debug 2 0)
+		debuginfo-level-tools = $(usex debug 2 0)
+		debuginfo-level-tests = 0
+		backtrace = true
+		incremental = false
+		default-linker = "$(tc-getCC)"
+		parallel-compiler = $(toml_usex parallel-compiler)
+		channel = "$(usex nightly nightly stable)"
+		description = "gentoo"
+		rpath = false
+		verbose-tests = true
+		optimize-tests = $(toml_usex !debug)
+		codegen-tests = true
+		dist-src = false
+		remap-debuginfo = true
+		lld = $(usex system-llvm false $(toml_usex wasm))
+		# only deny warnings if doc+wasm are NOT requested, documenting stage0 wasm std fails without it
+		# https://github.com/rust-lang/rust/issues/74976
+		# https://github.com/rust-lang/rust/issues/76526
+		deny-warnings = $(usex wasm $(usex doc false true) true)
+		backtrace-on-ice = true
+		jemalloc = false
+		lto = "$(usex lto fat off)"
+		[dist]
+		src-tarball = false
+		compression-formats = ["xz"]
+		compression-profile = "balanced"
+	_EOF_
+
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_target=$(rust_abi $(get_abi_CHOST ${v##*.}))
+		arch_cflags="$(get_abi_CFLAGS ${v##*.})"
+
+		export CFLAGS_${rust_target//-/_}="${arch_cflags}"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${rust_target}]
+			ar = "$(tc-getAR)"
+			cc = "$(tc-getCC)"
+			cxx = "$(tc-getCXX)"
+			linker = "$(tc-getCC)"
+			ranlib = "$(tc-getRANLIB)"
+			llvm-libunwind = "$(usex llvm-libunwind $(usex system-llvm system in-tree) no)"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		# by default librustc_target/spec/linux_musl_base.rs sets base.crt_static_default = true;
+		# but we patch it and set to false here as well
+		if use elibc_musl; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				crt-static = false
+			_EOF_
+		fi
+	done
+	if use wasm; then
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.wasm32-unknown-unknown]
+			linker = "$(usex system-llvm lld rust-lld)"
+			# wasm target does not have profiler_builtins https://bugs.gentoo.org/848483
+			profiler = false
+		_EOF_
+	fi
+
+	if [[ -n ${I_KNOW_WHAT_I_AM_DOING_CROSS} ]]; then # whitespace intentionally shifted below
+	# experimental cross support
+	# discussion: https://bugs.gentoo.org/679878
+	# TODO: c*flags, clang, system-llvm, cargo.eclass target support
+	# it would be much better if we could split out stdlib
+	# complilation to separate ebuild and abuse CATEGORY to
+	# just install to /usr/lib/rustlib/<target>
+
+	# extra targets defined as a bash array
+	# spec format:  <LLVM target>:<rust-target>:<CTARGET>
+	# best place would be /etc/portage/env/dev-lang/rust
+	# Example:
+	# RUST_CROSS_TARGETS=(
+	#	"AArch64:aarch64-unknown-linux-gnu:aarch64-unknown-linux-gnu"
+	# )
+	# no extra hand holding is done, no target transformations, all
+	# values are passed as-is with just basic checks, so it's up to user to supply correct values
+	# valid rust targets can be obtained with
+	# 	rustc --print target-list
+	# matching cross toolchain has to be installed
+	# matching LLVM_TARGET has to be enabled for both rust and llvm (if using system one)
+	# only gcc toolchains installed with crossdev are checked for now.
+
+	# BUG: we can't pass host flags to cross compiler, so just filter for now
+	# BUG: this should be more fine-grained.
+	filter-flags '-mcpu=*' '-march=*' '-mtune=*'
+
+	local cross_target_spec
+	for cross_target_spec in "${RUST_CROSS_TARGETS[@]}";do
+		# extracts first element form <LLVM target>:<rust-target>:<CTARGET>
+		local cross_llvm_target="${cross_target_spec%%:*}"
+		# extracts toolchain triples, <rust-target>:<CTARGET>
+		local cross_triples="${cross_target_spec#*:}"
+		# extracts first element after before : separator
+		local cross_rust_target="${cross_triples%%:*}"
+		# extracts last element after : separator
+		local cross_toolchain="${cross_triples##*:}"
+		use llvm_targets_${cross_llvm_target} || die "need llvm_targets_${cross_llvm_target} target enabled"
+		command -v ${cross_toolchain}-gcc > /dev/null 2>&1 || die "need ${cross_toolchain} cross toolchain"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${cross_rust_target}]
+			ar = "${cross_toolchain}-ar"
+			cc = "${cross_toolchain}-gcc"
+			cxx = "${cross_toolchain}-g++"
+			linker = "${cross_toolchain}-gcc"
+			ranlib = "${cross_toolchain}-ranlib"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		if [[ "${cross_toolchain}" == *-musl* ]]; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				musl-root = "$(${cross_toolchain}-gcc -print-sysroot)/usr"
+			_EOF_
+		fi
+
+		# append cross target to "normal" target list
+		# example 'target = ["powerpc64le-unknown-linux-gnu"]'
+		# becomes 'target = ["powerpc64le-unknown-linux-gnu","aarch64-unknown-linux-gnu"]'
+
+		rust_targets="${rust_targets},\"${cross_rust_target}\""
+		sed -i "/^target = \[/ s#\[.*\]#\[${rust_targets}\]#" config.toml || die
+
+		ewarn
+		ewarn "Enabled ${cross_rust_target} rust target"
+		ewarn "Using ${cross_toolchain} cross toolchain"
+		ewarn
+		if ! has_version -b 'sys-devel/binutils[multitarget]' ; then
+			ewarn "'sys-devel/binutils[multitarget]' is not installed"
+			ewarn "'strip' will be unable to strip cross libraries"
+			ewarn "cross targets will be installed with full debug information"
+			ewarn "enable 'multitarget' USE flag for binutils to be able to strip object files"
+			ewarn
+			ewarn "Alternatively llvm-strip can be used, it supports stripping any target"
+			ewarn "define STRIP=\"llvm-strip\" to use it (experimental)"
+			ewarn
+		fi
+	done
+	fi # I_KNOW_WHAT_I_AM_DOING_CROSS
+
+	einfo "Rust configured with the following flags:"
+	echo
+	echo RUSTFLAGS="\"${RUSTFLAGS}\""
+	echo RUSTFLAGS_BOOTSTRAP="\"${RUSTFLAGS_BOOTSTRAP}\""
+	echo RUSTFLAGS_NOT_BOOTSTRAP="\"${RUSTFLAGS_NOT_BOOTSTRAP}\""
+	echo MAGIC_EXTRA_RUSTFLAGS="\"${MAGIC_EXTRA_RUSTFLAGS}\""
+	env | grep "CARGO_TARGET_.*_RUSTFLAGS="
+	env | grep "CFLAGS_.*"
+	echo
+	einfo "config.toml contents:"
+	cat "${S}"/config.toml || die
+	echo
+}
+
+src_compile() {
+	RUST_BACKTRACE=1 "${EPYTHON}" ./x.py build -vvv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+}
+
+src_test() {
+	# https://rustc-dev-guide.rust-lang.org/tests/intro.html
+
+	# those are basic and codegen tests.
+	local tests=(
+		codegen
+		codegen-units
+		compile-fail
+		incremental
+		mir-opt
+		pretty
+		run-make
+	)
+
+	# fails if llvm is not built with ALL targets.
+	# and known to fail with system llvm sometimes.
+	use system-llvm || tests+=( assembly )
+
+	# fragile/expensive/less important tests
+	# or tests that require extra builds
+	# TODO: instead of skipping, just make some nonfatal.
+	if [[ ${ERUST_RUN_EXTRA_TESTS:-no} != no ]]; then
+		tests+=(
+			rustdoc
+			rustdoc-js
+			rustdoc-js-std
+			rustdoc-ui
+			run-make-fulldeps
+			ui
+			ui-fulldeps
+		)
+	fi
+
+	local i failed=()
+	einfo "rust_src_test: enabled tests ${tests[@]/#/src/test/}"
+	for i in "${tests[@]}"; do
+		local t="src/test/${i}"
+		einfo "rust_src_test: running ${t}"
+		if ! RUST_BACKTRACE=1 "${EPYTHON}" ./x.py test -vv --config="${S}"/config.toml \
+				-j$(makeopts_jobs) --no-doc --no-fail-fast "${t}"
+		then
+				failed+=( "${t}" )
+				eerror "rust_src_test: ${t} failed"
+		fi
+	done
+
+	if [[ ${#failed[@]} -ne 0 ]]; then
+		eerror "rust_src_test: failure summary: ${failed[@]}"
+		die "aborting due to test failures"
+	fi
+}
+
+src_install() {
+	DESTDIR="${D}" "${EPYTHON}" ./x.py install -vv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+
+	# bug #689562, #689160
+	rm -v "${ED}/usr/lib/${PN}/${PV}/etc/bash_completion.d/cargo" || die
+	rmdir -v "${ED}/usr/lib/${PN}/${PV}"/etc{/bash_completion.d,} || die
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+		rust-demangler
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use miri && symlinks+=( miri cargo-miri )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths: ${symlinks[@]}"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /usr/lib/rust/<ver>/bin/rustc-<ver>
+		# need to fix eselect-rust to remove this hack.
+		local ver_i="${i}-${PV}"
+		if [[ -f "${ED}/usr/lib/${PN}/${PV}/bin/${i}" ]]; then
+			einfo "Installing ${i} symlink"
+			ln -v "${ED}/usr/lib/${PN}/${PV}/bin/${i}" "${ED}/usr/lib/${PN}/${PV}/bin/${ver_i}" || die
+		else
+			ewarn "${i} symlink requested, but source file not found"
+			ewarn "please report this"
+		fi
+		dosym "../lib/${PN}/${PV}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "${PV}/lib" "/usr/lib/${PN}/lib-${PV}"
+	dosym "${PV}/libexec" "/usr/lib/${PN}/libexec-${PV}"
+	dosym "${PV}/share/man" "/usr/lib/${PN}/man-${PV}"
+	dosym "rust/${PV}/lib/rustlib" "/usr/lib/rustlib-${PV}"
+	dosym "../../lib/${PN}/${PV}/share/doc/rust" "/usr/share/doc/${P}"
+
+	newenvd - "50${P}" <<-_EOF_
+		LDPATH="${EPREFIX}/usr/lib/rust/lib-${PV}"
+		MANPATH="${EPREFIX}/usr/lib/rust/man-${PV}"
+	_EOF_
+
+	rm -rf "${ED}/usr/lib/${PN}/${PV}"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/bin"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/doc"/*.old || die
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+		/usr/bin/cargo
+		/usr/bin/rustdoc
+		/usr/bin/rust-demangler
+		/usr/bin/rust-gdb
+		/usr/bin/rust-gdbgui
+		/usr/bin/rust-lldb
+		/usr/lib/rustlib
+		/usr/lib/rust/lib
+		/usr/lib/rust/libexec
+		/usr/lib/rust/man
+		/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use miri; then
+		echo /usr/bin/miri >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-miri >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+
+	if use dist; then
+		insinto "/usr/lib/${PN}/${PV}/dist"
+		doins -r "${S}/build/dist/."
+	fi
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	if has_version dev-debug/gdb || has_version dev-debug/lldb; then
+		elog "Rust installs a helper script for calling GDB and LLDB,"
+		elog "for your convenience it is installed under /usr/bin/rust-{gdb,lldb}-${PV}."
+	fi
+
+	if has_version app-editors/emacs; then
+		elog "install app-emacs/rust-mode to get emacs support for rust."
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		elog "install app-vim/rust-vim to get vim support for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust/rust-1.74.1-r100.ebuild b/dev-lang/rust/rust-1.74.1-r100.ebuild
new file mode 100644
index 000000000000..bd474794968a
--- /dev/null
+++ b/dev-lang/rust/rust-1.74.1-r100.ebuild
@@ -0,0 +1,764 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 17 )
+PYTHON_COMPAT=( python3_{10..12} )
+
+inherit check-reqs estack flag-o-matic llvm-r1 multiprocessing \
+	multilib multilib-build python-any-r1 rust-toolchain toolchain-funcs verify-sig
+
+if [[ ${PV} = *beta* ]]; then
+	betaver=${PV//*beta}
+	BETA_SNAPSHOT="${betaver:0:4}-${betaver:4:2}-${betaver:6:2}"
+	MY_P="rustc-beta"
+	SRC="${BETA_SNAPSHOT}/rustc-beta-src.tar.xz -> rustc-${PV}-src.tar.xz"
+else
+	MY_P="rustc-${PV}"
+	SRC="${MY_P}-src.tar.xz"
+	KEYWORDS="amd64 arm arm64 ~loong ppc ppc64 ~riscv sparc x86"
+fi
+
+RUST_STAGE0_VERSION="1.$(($(ver_cut 2) - 1)).0"
+
+DESCRIPTION="Language empowering everyone to build reliable and efficient software"
+HOMEPAGE="https://www.rust-lang.org/"
+
+SRC_URI="
+	https://static.rust-lang.org/dist/${SRC}
+	verify-sig? ( https://static.rust-lang.org/dist/${SRC}.asc )
+	!system-bootstrap? ( $(rust_all_arch_uris rust-${RUST_STAGE0_VERSION}) )
+"
+
+S="${WORKDIR}/${MY_P}-src"
+
+# keep in sync with llvm ebuild of the same version as bundled one.
+ALL_LLVM_TARGETS=( AArch64 AMDGPU ARC ARM AVR BPF CSKY DirectX Hexagon Lanai
+	LoongArch M68k Mips MSP430 NVPTX PowerPC RISCV Sparc SPIRV SystemZ VE
+	WebAssembly X86 XCore Xtensa )
+ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
+LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/(-)?}
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+
+IUSE="big-endian clippy cpu_flags_x86_sse2 debug dist doc llvm-libunwind +lto miri nightly parallel-compiler rustfmt rust-analyzer rust-src system-bootstrap system-llvm test wasm ${ALL_LLVM_TARGETS[*]}"
+
+LLVM_DEPEND=()
+# splitting usedeps needed to avoid CI/pkgcheck's UncheckableDep limitation
+for _x in "${ALL_LLVM_TARGETS[@]}"; do
+	LLVM_DEPEND+=( "	${_x}? ( $(llvm_gen_dep "sys-devel/llvm:\${LLVM_SLOT}[${_x}]") )" )
+done
+LLVM_DEPEND+=( "	wasm? ( $(llvm_gen_dep 'sys-devel/lld:${LLVM_SLOT}') )" )
+LLVM_DEPEND+=( "	$(llvm_gen_dep 'sys-devel/llvm:${LLVM_SLOT}')" )
+
+# to bootstrap we need at least exactly previous version, or same.
+# most of the time previous versions fail to bootstrap with newer
+# for example 1.47.x, requires at least 1.46.x, 1.47.x is ok,
+# but it fails to bootstrap with 1.48.x
+# https://github.com/rust-lang/rust/blob/${PV}/src/stage0.json
+RUST_DEP_PREV="$(ver_cut 1).$(($(ver_cut 2) - 1))*"
+RUST_DEP_CURR="$(ver_cut 1).$(ver_cut 2)*"
+BOOTSTRAP_DEPEND="||
+	(
+		=dev-lang/rust-"${RUST_DEP_PREV}"
+		=dev-lang/rust-bin-"${RUST_DEP_PREV}"
+		=dev-lang/rust-"${RUST_DEP_CURR}"
+		=dev-lang/rust-bin-"${RUST_DEP_CURR}"
+	)
+"
+
+BDEPEND="${PYTHON_DEPS}
+	app-eselect/eselect-rust
+	|| (
+		>=sys-devel/gcc-4.7
+		>=sys-devel/clang-3.5
+	)
+	system-bootstrap? ( ${BOOTSTRAP_DEPEND} )
+	!system-llvm? (
+		>=dev-build/cmake-3.13.4
+		app-alternatives/ninja
+	)
+	test? ( dev-debug/gdb )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+DEPEND="
+	>=app-arch/xz-utils-5.2
+	net-misc/curl:=[http2,ssl]
+	sys-libs/zlib:=
+	dev-libs/openssl:0=
+	system-llvm? (
+		${LLVM_DEPEND[*]}
+		llvm-libunwind? ( sys-libs/llvm-libunwind:= )
+	)
+	!system-llvm? (
+		!llvm-libunwind? (
+			elibc_musl? ( sys-libs/libunwind:= )
+		)
+	)
+"
+
+RDEPEND="${DEPEND}
+	app-eselect/eselect-rust
+	dev-lang/rust-common
+	sys-apps/lsb-release
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+
+REQUIRED_USE="|| ( ${ALL_LLVM_TARGETS[*]} )
+	miri? ( nightly )
+	parallel-compiler? ( nightly )
+	rust-analyzer? ( rust-src )
+	test? ( ${ALL_LLVM_TARGETS[*]} )
+	wasm? ( llvm_targets_WebAssembly )
+	x86? ( cpu_flags_x86_sse2 )
+"
+
+# we don't use cmake.eclass, but can get a warning
+CMAKE_WARN_UNUSED_CLI=no
+
+QA_FLAGS_IGNORED="
+	usr/lib/${PN}/${PV}/bin/.*
+	usr/lib/${PN}/${PV}/libexec/.*
+	usr/lib/${PN}/${PV}/lib/lib.*.so
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_SONAME="
+	usr/lib/${PN}/${PV}/lib/lib.*.so.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_PRESTRIPPED="
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/rust-llvm-dwp
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/self-contained/crtn.o
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="usr/lib/${PN}/${PV}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+# causes double bootstrap
+RESTRICT="test"
+
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/rust.asc
+
+PATCHES=(
+	"${FILESDIR}"/1.74.1-cross-compile-libz.patch
+	#"${FILESDIR}"/1.72.0-bump-libc-deps-to-0.2.146.patch  # pending refresh
+	"${FILESDIR}"/1.70.0-ignore-broken-and-non-applicable-tests.patch
+	"${FILESDIR}"/1.62.1-musl-dynamic-linking.patch
+	"${FILESDIR}"/1.67.0-doc-wasm.patch
+)
+
+clear_vendor_checksums() {
+	sed -i 's/\("files":{\)[^}]*/\1/' "vendor/${1}/.cargo-checksum.json" || die
+}
+
+toml_usex() {
+	usex "${1}" true false
+}
+
+bootstrap_rust_version_check() {
+	# never call from pkg_pretend. eselect-rust may be not installed yet.
+	[[ ${MERGE_TYPE} == binary ]] && return
+	local rustc_wanted="$(ver_cut 1).$(($(ver_cut 2) - 1))"
+	local rustc_toonew="$(ver_cut 1).$(($(ver_cut 2) + 1))"
+	local rustc_version=( $(eselect --brief --root="${BROOT}" rust show 2>/dev/null) )
+	rustc_version=${rustc_version[0]#rust-bin-}
+	rustc_version=${rustc_version#rust-}
+
+	[[ -z "${rustc_version}" ]] && die "Failed to determine rust version, check 'eselect rust' output"
+
+	if ver_test "${rustc_version}" -lt "${rustc_wanted}" ; then
+		eerror "Rust >=${rustc_wanted} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too old"
+	elif ver_test "${rustc_version}" -ge "${rustc_toonew}" ; then
+		eerror "Rust <${rustc_toonew} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too new"
+	else
+		einfo "Using rust ${rustc_version} to build"
+	fi
+}
+
+pre_build_checks() {
+	local M=8192
+	# multiply requirements by 1.3 if we are doing x86-multilib
+	if use amd64; then
+		M=$(( $(usex abi_x86_32 13 10) * ${M} / 10 ))
+	fi
+	M=$(( $(usex clippy 128 0) + ${M} ))
+	M=$(( $(usex miri 128 0) + ${M} ))
+	M=$(( $(usex rustfmt 256 0) + ${M} ))
+	# add 2G if we compile llvm and 256M per llvm_target
+	if ! use system-llvm; then
+		M=$(( 2048 + ${M} ))
+		local ltarget
+		for ltarget in ${ALL_LLVM_TARGETS[@]}; do
+			M=$(( $(usex ${ltarget} 256 0) + ${M} ))
+		done
+	fi
+	M=$(( $(usex wasm 256 0) + ${M} ))
+	M=$(( $(usex debug 2 1) * ${M} ))
+	eshopts_push -s extglob
+	if is-flagq '-g?(gdb)?([1-9])'; then
+		M=$(( 15 * ${M} / 10 ))
+	fi
+	eshopts_pop
+	M=$(( $(usex system-bootstrap 0 1024) + ${M} ))
+	M=$(( $(usex doc 256 0) + ${M} ))
+	CHECKREQS_DISK_BUILD=${M}M check-reqs_pkg_${EBUILD_PHASE}
+}
+
+llvm_check_deps() {
+	has_version -r "sys-devel/llvm:${LLVM_SLOT}[${LLVM_TARGET_USEDEPS// /,}]"
+}
+
+# Is LLVM being linked against libc++?
+is_libcxx_linked() {
+	local code='#include <ciso646>
+#if defined(_LIBCPP_VERSION)
+	HAVE_LIBCXX
+#endif
+'
+	local out=$($(tc-getCXX) ${CXXFLAGS} ${CPPFLAGS} -x c++ -E -P - <<<"${code}") || return 1
+	[[ ${out} == *HAVE_LIBCXX* ]]
+}
+
+pkg_pretend() {
+	pre_build_checks
+}
+
+pkg_setup() {
+	pre_build_checks
+	python-any-r1_pkg_setup
+
+	export LIBGIT2_NO_PKG_CONFIG=1 #749381
+	if tc-is-cross-compiler; then
+		export PKG_CONFIG_ALLOW_CROSS=1
+		export PKG_CONFIG_PATH="${ROOT}/usr/$(get_libdir)/pkgconfig"
+		export OPENSSL_INCLUDE_DIR="${ROOT}/usr/include"
+		export OPENSSL_LIB_DIR="${ROOT}/usr/$(get_libdir)"
+
+		use system-bootstrap || die "USE=system-bootstrap is required when cross-compiling"
+		use system-llvm && die "USE=system-llvm not allowed when cross-compiling"
+		local cross_llvm_target="$(llvm_tuple_to_target "${CBUILD}")"
+		use "llvm_targets_${cross_llvm_target}" || \
+			die "Must enable LLVM_TARGETS=${cross_llvm_target} matching CBUILD=${CBUILD} when cross-compiling"
+	fi
+
+	use system-bootstrap && bootstrap_rust_version_check
+
+	if use system-llvm; then
+		llvm-r1_pkg_setup
+
+		local llvm_config="$(get_llvm_prefix)/bin/llvm-config"
+		export LLVM_LINK_SHARED=1
+		export RUSTFLAGS="${RUSTFLAGS} -Lnative=$("${llvm_config}" --libdir)"
+	fi
+}
+
+esetup_unwind_hack() {
+	# https://bugs.gentoo.org/870280
+	# this is a hack needed to bootstrap with libgcc_s linked tarball on llvm-libunwind system.
+	# it should trigger for internal bootstrap or system-bootstrap with rust-bin.
+	# the whole idea is for stage0 to bootstrap with fake libgcc_s.
+	# final stage will receive -L${T}/lib but not -lgcc_s args, producing clean compiler.
+	local fakelib="${T}/fakelib"
+	mkdir -p "${fakelib}" || die
+	# we need both symlinks, one for cargo runtime, other for linker.
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so.1" || die
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so" || die
+	export LD_LIBRARY_PATH="${fakelib}"
+	export RUSTFLAGS+=" -L${fakelib}"
+	# this is a literally magic variable that gets through cargo cache, without it some
+	# crates ignore RUSTFLAGS.
+	# this variable can not contain leading space.
+	export MAGIC_EXTRA_RUSTFLAGS+="${MAGIC_EXTRA_RUSTFLAGS:+ }-L${fakelib}"
+}
+
+src_prepare() {
+	# Clear vendor checksums for crates that we patched to bump libc.
+	# NOTE: refresh this on each bump.
+	#for i in addr2line-0.20.0 bstr cranelift-jit crossbeam-channel elasticlunr-rs handlebars icu_locid libffi \
+	#	terminal_size tracing-tree; do
+	#	clear_vendor_checksums "${i}"
+	#done
+
+	if ! use system-bootstrap; then
+		has_version sys-devel/gcc || esetup_unwind_hack
+		local rust_stage0_root="${WORKDIR}"/rust-stage0
+		local rust_stage0="rust-${RUST_STAGE0_VERSION}-$(rust_abi "${CBUILD}")"
+
+		"${WORKDIR}/${rust_stage0}"/install.sh --disable-ldconfig \
+			--without=rust-docs-json-preview,rust-docs --destdir="${rust_stage0_root}" --prefix=/ || die
+	fi
+
+	default
+}
+
+src_configure() {
+	filter-lto # https://bugs.gentoo.org/862109 https://bugs.gentoo.org/866231
+
+	local rust_target="" rust_targets="" arch_cflags
+
+	# Collect rust target names to compile standard libs for all ABIs.
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_targets+=",\"$(rust_abi $(get_abi_CHOST ${v##*.}))\""
+	done
+	if use wasm; then
+		rust_targets+=",\"wasm32-unknown-unknown\""
+		if use system-llvm; then
+			# un-hardcode rust-lld linker for this target
+			# https://bugs.gentoo.org/715348
+			sed -i '/linker:/ s/rust-lld/wasm-ld/' compiler/rustc_target/src/spec/wasm_base.rs || die
+		fi
+	fi
+	rust_targets="${rust_targets#,}"
+
+	# cargo and rustdoc are mandatory and should always be included
+	local tools='"cargo","rustdoc", "rust-demangler"'
+	use clippy && tools+=',"clippy"'
+	use miri && tools+=',"miri"'
+	use rustfmt && tools+=',"rustfmt"'
+	use rust-analyzer && tools+=',"rust-analyzer"'
+	use rust-src && tools+=',"src"'
+
+	local rust_stage0_root
+	if use system-bootstrap; then
+		local printsysroot
+		printsysroot="$(rustc --print sysroot || die "Can't determine rust's sysroot")"
+		rust_stage0_root="${printsysroot}"
+	else
+		rust_stage0_root="${WORKDIR}"/rust-stage0
+	fi
+	# in case of prefix it will be already prefixed, as --print sysroot returns full path
+	[[ -d ${rust_stage0_root} ]] || die "${rust_stage0_root} is not a directory"
+
+	rust_target="$(rust_abi)"
+	rust_build="$(rust_abi "${CBUILD}")"
+	rust_host="$(rust_abi "${CHOST}")"
+
+	local cm_btype="$(usex debug DEBUG RELEASE)"
+	cat <<- _EOF_ > "${S}"/config.toml
+		changelog-seen = 2
+		[llvm]
+		download-ci-llvm = false
+		optimize = $(toml_usex !debug)
+		release-debuginfo = $(toml_usex debug)
+		assertions = $(toml_usex debug)
+		ninja = true
+		targets = "${LLVM_TARGETS// /;}"
+		experimental-targets = ""
+		link-shared = $(toml_usex system-llvm)
+		$(if is_libcxx_linked; then
+			# https://bugs.gentoo.org/732632
+			echo "use-libcxx = true"
+			echo "static-libstdcpp = false"
+		fi)
+		$(case "${rust_target}" in
+			i586-*-linux-*)
+				# https://github.com/rust-lang/rust/issues/93059
+				echo 'cflags = "-fcf-protection=none"'
+				echo 'cxxflags = "-fcf-protection=none"'
+				echo 'ldflags = "-fcf-protection=none"'
+				;;
+			*)
+				;;
+		esac)
+		enable-warnings = false
+		[llvm.build-config]
+		CMAKE_VERBOSE_MAKEFILE = "ON"
+		$(if ! tc-is-cross-compiler; then
+			# When cross-compiling, LLVM is compiled twice, once for host and
+			# once for target.  Unfortunately, this build configuration applies
+			# to both, which means any flags applicable to one target but not
+			# the other will break.  Conditionally disable respecting user
+			# flags when cross-compiling.
+			echo "CMAKE_C_FLAGS_${cm_btype} = \"${CFLAGS}\""
+			echo "CMAKE_CXX_FLAGS_${cm_btype} = \"${CXXFLAGS}\""
+			echo "CMAKE_EXE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_MODULE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_SHARED_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_STATIC_LINKER_FLAGS_${cm_btype} = \"${ARFLAGS}\""
+		fi)
+		[build]
+		build-stage = 2
+		test-stage = 2
+		build = "${rust_build}"
+		host = ["${rust_host}"]
+		target = [${rust_targets}]
+		cargo = "${rust_stage0_root}/bin/cargo"
+		rustc = "${rust_stage0_root}/bin/rustc"
+		rustfmt = "${rust_stage0_root}/bin/rustfmt"
+		docs = $(toml_usex doc)
+		compiler-docs = false
+		submodules = false
+		python = "${EPYTHON}"
+		locked-deps = true
+		vendor = true
+		extended = true
+		tools = [${tools}]
+		verbose = 2
+		sanitizers = false
+		profiler = true
+		cargo-native-static = false
+		[install]
+		prefix = "${EPREFIX}/usr/lib/${PN}/${PV}"
+		sysconfdir = "etc"
+		docdir = "share/doc/rust"
+		bindir = "bin"
+		libdir = "lib"
+		mandir = "share/man"
+		[rust]
+		# https://github.com/rust-lang/rust/issues/54872
+		codegen-units-std = 1
+		optimize = true
+		debug = $(toml_usex debug)
+		debug-assertions = $(toml_usex debug)
+		debug-assertions-std = $(toml_usex debug)
+		debuginfo-level = $(usex debug 2 0)
+		debuginfo-level-rustc = $(usex debug 2 0)
+		debuginfo-level-std = $(usex debug 2 0)
+		debuginfo-level-tools = $(usex debug 2 0)
+		debuginfo-level-tests = 0
+		backtrace = true
+		incremental = false
+		$(if ! tc-is-cross-compiler; then
+			echo "default-linker = \"$(tc-getCC)\""
+		fi)
+		parallel-compiler = $(toml_usex parallel-compiler)
+		channel = "$(usex nightly nightly stable)"
+		description = "gentoo"
+		rpath = false
+		verbose-tests = true
+		optimize-tests = $(toml_usex !debug)
+		codegen-tests = true
+		dist-src = false
+		remap-debuginfo = true
+		lld = $(usex system-llvm false $(toml_usex wasm))
+		# only deny warnings if doc+wasm are NOT requested, documenting stage0 wasm std fails without it
+		# https://github.com/rust-lang/rust/issues/74976
+		# https://github.com/rust-lang/rust/issues/76526
+		deny-warnings = $(usex wasm $(usex doc false true) true)
+		backtrace-on-ice = true
+		jemalloc = false
+		lto = "$(usex lto fat off)"
+		[dist]
+		src-tarball = false
+		compression-formats = ["xz"]
+		compression-profile = "balanced"
+	_EOF_
+
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_target=$(rust_abi $(get_abi_CHOST ${v##*.}))
+		arch_cflags="$(get_abi_CFLAGS ${v##*.})"
+
+		export CFLAGS_${rust_target//-/_}="${arch_cflags}"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${rust_target}]
+			ar = "$(tc-getAR)"
+			cc = "$(tc-getCC)"
+			cxx = "$(tc-getCXX)"
+			linker = "$(tc-getCC)"
+			ranlib = "$(tc-getRANLIB)"
+			llvm-libunwind = "$(usex llvm-libunwind $(usex system-llvm system in-tree) no)"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		# by default librustc_target/spec/linux_musl_base.rs sets base.crt_static_default = true;
+		# but we patch it and set to false here as well
+		if use elibc_musl; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				crt-static = false
+			_EOF_
+		fi
+	done
+	if use wasm; then
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.wasm32-unknown-unknown]
+			linker = "$(usex system-llvm lld rust-lld)"
+			# wasm target does not have profiler_builtins https://bugs.gentoo.org/848483
+			profiler = false
+		_EOF_
+	fi
+
+	if [[ -n ${I_KNOW_WHAT_I_AM_DOING_CROSS} ]]; then # whitespace intentionally shifted below
+	# experimental cross support
+	# discussion: https://bugs.gentoo.org/679878
+	# TODO: c*flags, clang, system-llvm, cargo.eclass target support
+	# it would be much better if we could split out stdlib
+	# complilation to separate ebuild and abuse CATEGORY to
+	# just install to /usr/lib/rustlib/<target>
+
+	# extra targets defined as a bash array
+	# spec format:  <LLVM target>:<rust-target>:<CTARGET>
+	# best place would be /etc/portage/env/dev-lang/rust
+	# Example:
+	# RUST_CROSS_TARGETS=(
+	#	"AArch64:aarch64-unknown-linux-gnu:aarch64-unknown-linux-gnu"
+	# )
+	# no extra hand holding is done, no target transformations, all
+	# values are passed as-is with just basic checks, so it's up to user to supply correct values
+	# valid rust targets can be obtained with
+	# 	rustc --print target-list
+	# matching cross toolchain has to be installed
+	# matching LLVM_TARGET has to be enabled for both rust and llvm (if using system one)
+	# only gcc toolchains installed with crossdev are checked for now.
+
+	# BUG: we can't pass host flags to cross compiler, so just filter for now
+	# BUG: this should be more fine-grained.
+	filter-flags '-mcpu=*' '-march=*' '-mtune=*'
+
+	local cross_target_spec
+	for cross_target_spec in "${RUST_CROSS_TARGETS[@]}";do
+		# extracts first element form <LLVM target>:<rust-target>:<CTARGET>
+		local cross_llvm_target="${cross_target_spec%%:*}"
+		# extracts toolchain triples, <rust-target>:<CTARGET>
+		local cross_triples="${cross_target_spec#*:}"
+		# extracts first element after before : separator
+		local cross_rust_target="${cross_triples%%:*}"
+		# extracts last element after : separator
+		local cross_toolchain="${cross_triples##*:}"
+		use llvm_targets_${cross_llvm_target} || die "need llvm_targets_${cross_llvm_target} target enabled"
+		command -v ${cross_toolchain}-gcc > /dev/null 2>&1 || die "need ${cross_toolchain} cross toolchain"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${cross_rust_target}]
+			ar = "${cross_toolchain}-ar"
+			cc = "${cross_toolchain}-gcc"
+			cxx = "${cross_toolchain}-g++"
+			linker = "${cross_toolchain}-gcc"
+			ranlib = "${cross_toolchain}-ranlib"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		if [[ "${cross_toolchain}" == *-musl* ]]; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				musl-root = "$(${cross_toolchain}-gcc -print-sysroot)/usr"
+			_EOF_
+		fi
+
+		# append cross target to "normal" target list
+		# example 'target = ["powerpc64le-unknown-linux-gnu"]'
+		# becomes 'target = ["powerpc64le-unknown-linux-gnu","aarch64-unknown-linux-gnu"]'
+
+		rust_targets="${rust_targets},\"${cross_rust_target}\""
+		sed -i "/^target = \[/ s#\[.*\]#\[${rust_targets}\]#" config.toml || die
+
+		ewarn
+		ewarn "Enabled ${cross_rust_target} rust target"
+		ewarn "Using ${cross_toolchain} cross toolchain"
+		ewarn
+		if ! has_version -b 'sys-devel/binutils[multitarget]' ; then
+			ewarn "'sys-devel/binutils[multitarget]' is not installed"
+			ewarn "'strip' will be unable to strip cross libraries"
+			ewarn "cross targets will be installed with full debug information"
+			ewarn "enable 'multitarget' USE flag for binutils to be able to strip object files"
+			ewarn
+			ewarn "Alternatively llvm-strip can be used, it supports stripping any target"
+			ewarn "define STRIP=\"llvm-strip\" to use it (experimental)"
+			ewarn
+		fi
+	done
+	fi # I_KNOW_WHAT_I_AM_DOING_CROSS
+
+	einfo "Rust configured with the following flags:"
+	echo
+	echo RUSTFLAGS="\"${RUSTFLAGS}\""
+	echo RUSTFLAGS_BOOTSTRAP="\"${RUSTFLAGS_BOOTSTRAP}\""
+	echo RUSTFLAGS_NOT_BOOTSTRAP="\"${RUSTFLAGS_NOT_BOOTSTRAP}\""
+	echo MAGIC_EXTRA_RUSTFLAGS="\"${MAGIC_EXTRA_RUSTFLAGS}\""
+	env | grep "CARGO_TARGET_.*_RUSTFLAGS="
+	env | grep "CFLAGS_.*"
+	echo
+	einfo "config.toml contents:"
+	cat "${S}"/config.toml || die
+	echo
+}
+
+src_compile() {
+	RUST_BACKTRACE=1 "${EPYTHON}" ./x.py build -vvv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+}
+
+src_test() {
+	# https://rustc-dev-guide.rust-lang.org/tests/intro.html
+
+	# those are basic and codegen tests.
+	local tests=(
+		codegen
+		codegen-units
+		compile-fail
+		incremental
+		mir-opt
+		pretty
+		run-make
+	)
+
+	# fails if llvm is not built with ALL targets.
+	# and known to fail with system llvm sometimes.
+	use system-llvm || tests+=( assembly )
+
+	# fragile/expensive/less important tests
+	# or tests that require extra builds
+	# TODO: instead of skipping, just make some nonfatal.
+	if [[ ${ERUST_RUN_EXTRA_TESTS:-no} != no ]]; then
+		tests+=(
+			rustdoc
+			rustdoc-js
+			rustdoc-js-std
+			rustdoc-ui
+			run-make-fulldeps
+			ui
+			ui-fulldeps
+		)
+	fi
+
+	local i failed=()
+	einfo "rust_src_test: enabled tests ${tests[@]/#/src/test/}"
+	for i in "${tests[@]}"; do
+		local t="src/test/${i}"
+		einfo "rust_src_test: running ${t}"
+		if ! RUST_BACKTRACE=1 "${EPYTHON}" ./x.py test -vv --config="${S}"/config.toml \
+				-j$(makeopts_jobs) --no-doc --no-fail-fast "${t}"
+		then
+				failed+=( "${t}" )
+				eerror "rust_src_test: ${t} failed"
+		fi
+	done
+
+	if [[ ${#failed[@]} -ne 0 ]]; then
+		eerror "rust_src_test: failure summary: ${failed[@]}"
+		die "aborting due to test failures"
+	fi
+}
+
+src_install() {
+	DESTDIR="${D}" "${EPYTHON}" ./x.py install -vv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+
+	# bug #689562, #689160
+	rm -v "${ED}/usr/lib/${PN}/${PV}/etc/bash_completion.d/cargo" || die
+	rmdir -v "${ED}/usr/lib/${PN}/${PV}"/etc{/bash_completion.d,} || die
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+		rust-demangler
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use miri && symlinks+=( miri cargo-miri )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths: ${symlinks[@]}"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /usr/lib/rust/<ver>/bin/rustc-<ver>
+		# need to fix eselect-rust to remove this hack.
+		local ver_i="${i}-${PV}"
+		if [[ -f "${ED}/usr/lib/${PN}/${PV}/bin/${i}" ]]; then
+			einfo "Installing ${i} symlink"
+			ln -v "${ED}/usr/lib/${PN}/${PV}/bin/${i}" "${ED}/usr/lib/${PN}/${PV}/bin/${ver_i}" || die
+		else
+			ewarn "${i} symlink requested, but source file not found"
+			ewarn "please report this"
+		fi
+		dosym "../lib/${PN}/${PV}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "${PV}/lib" "/usr/lib/${PN}/lib-${PV}"
+	dosym "${PV}/libexec" "/usr/lib/${PN}/libexec-${PV}"
+	dosym "${PV}/share/man" "/usr/lib/${PN}/man-${PV}"
+	dosym "rust/${PV}/lib/rustlib" "/usr/lib/rustlib-${PV}"
+	dosym "../../lib/${PN}/${PV}/share/doc/rust" "/usr/share/doc/${P}"
+
+	newenvd - "50${P}" <<-_EOF_
+		LDPATH="${EPREFIX}/usr/lib/rust/lib-${PV}"
+		MANPATH="${EPREFIX}/usr/lib/rust/man-${PV}"
+	_EOF_
+
+	rm -rf "${ED}/usr/lib/${PN}/${PV}"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/bin"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/doc"/*.old || die
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+		/usr/bin/cargo
+		/usr/bin/rustdoc
+		/usr/bin/rust-demangler
+		/usr/bin/rust-gdb
+		/usr/bin/rust-gdbgui
+		/usr/bin/rust-lldb
+		/usr/lib/rustlib
+		/usr/lib/rust/lib
+		/usr/lib/rust/libexec
+		/usr/lib/rust/man
+		/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use miri; then
+		echo /usr/bin/miri >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-miri >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+
+	if use dist; then
+		insinto "/usr/lib/${PN}/${PV}/dist"
+		doins -r "${S}/build/dist/."
+	fi
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	if has_version dev-debug/gdb || has_version dev-debug/lldb; then
+		elog "Rust installs a helper script for calling GDB and LLDB,"
+		elog "for your convenience it is installed under /usr/bin/rust-{gdb,lldb}-${PV}."
+	fi
+
+	if has_version app-editors/emacs; then
+		elog "install app-emacs/rust-mode to get emacs support for rust."
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		elog "install app-vim/rust-vim to get vim support for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust/rust-1.75.0-r100.ebuild b/dev-lang/rust/rust-1.75.0-r100.ebuild
new file mode 100644
index 000000000000..0517e38b84f4
--- /dev/null
+++ b/dev-lang/rust/rust-1.75.0-r100.ebuild
@@ -0,0 +1,767 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 17 )
+PYTHON_COMPAT=( python3_{10..12} )
+
+inherit check-reqs estack flag-o-matic llvm-r1 multiprocessing \
+	multilib multilib-build python-any-r1 rust-toolchain toolchain-funcs verify-sig
+
+if [[ ${PV} = *beta* ]]; then
+	betaver=${PV//*beta}
+	BETA_SNAPSHOT="${betaver:0:4}-${betaver:4:2}-${betaver:6:2}"
+	MY_P="rustc-beta"
+	SRC="${BETA_SNAPSHOT}/rustc-beta-src.tar.xz -> rustc-${PV}-src.tar.xz"
+else
+	MY_P="rustc-${PV}"
+	SRC="${MY_P}-src.tar.xz"
+	KEYWORDS="amd64 arm arm64 ~loong ppc ppc64 ~riscv sparc x86"
+fi
+
+S="${WORKDIR}/${MY_P}-src"
+
+RUST_STAGE0_VERSION="1.$(($(ver_cut 2) - 1)).0"
+
+DESCRIPTION="Language empowering everyone to build reliable and efficient software"
+HOMEPAGE="https://www.rust-lang.org/"
+
+SRC_URI="
+	https://static.rust-lang.org/dist/${SRC}
+	verify-sig? ( https://static.rust-lang.org/dist/${SRC}.asc )
+	!system-bootstrap? ( $(rust_all_arch_uris rust-${RUST_STAGE0_VERSION}) )
+"
+
+# keep in sync with llvm ebuild of the same version as bundled one.
+ALL_LLVM_TARGETS=( AArch64 AMDGPU ARC ARM AVR BPF CSKY DirectX Hexagon Lanai
+	LoongArch M68k Mips MSP430 NVPTX PowerPC RISCV Sparc SPIRV SystemZ VE
+	WebAssembly X86 XCore Xtensa )
+ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
+LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/(-)?}
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+
+IUSE="big-endian clippy cpu_flags_x86_sse2 debug dist doc llvm-libunwind +lto miri nightly parallel-compiler rustfmt rust-analyzer rust-src system-bootstrap system-llvm test wasm ${ALL_LLVM_TARGETS[*]}"
+
+LLVM_DEPEND=()
+# splitting usedeps needed to avoid CI/pkgcheck's UncheckableDep limitation
+for _x in "${ALL_LLVM_TARGETS[@]}"; do
+	LLVM_DEPEND+=( "	${_x}? ( $(llvm_gen_dep "sys-devel/llvm:\${LLVM_SLOT}[${_x}]") )" )
+done
+LLVM_DEPEND+=( "	wasm? ( $(llvm_gen_dep 'sys-devel/lld:${LLVM_SLOT}') )" )
+LLVM_DEPEND+=( "	$(llvm_gen_dep 'sys-devel/llvm:${LLVM_SLOT}')" )
+
+# to bootstrap we need at least exactly previous version, or same.
+# most of the time previous versions fail to bootstrap with newer
+# for example 1.47.x, requires at least 1.46.x, 1.47.x is ok,
+# but it fails to bootstrap with 1.48.x
+# https://github.com/rust-lang/rust/blob/${PV}/src/stage0.json
+RUST_DEP_PREV="$(ver_cut 1).$(($(ver_cut 2) - 1))*"
+RUST_DEP_CURR="$(ver_cut 1).$(ver_cut 2)*"
+BOOTSTRAP_DEPEND="||
+	(
+		=dev-lang/rust-"${RUST_DEP_PREV}"
+		=dev-lang/rust-bin-"${RUST_DEP_PREV}"
+		=dev-lang/rust-"${RUST_DEP_CURR}"
+		=dev-lang/rust-bin-"${RUST_DEP_CURR}"
+	)
+"
+
+BDEPEND="${PYTHON_DEPS}
+	app-eselect/eselect-rust
+	|| (
+		>=sys-devel/gcc-4.7
+		>=sys-devel/clang-3.5
+	)
+	system-bootstrap? ( ${BOOTSTRAP_DEPEND} )
+	!system-llvm? (
+		>=dev-build/cmake-3.13.4
+		app-alternatives/ninja
+	)
+	test? ( dev-debug/gdb )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+DEPEND="
+	>=app-arch/xz-utils-5.2
+	net-misc/curl:=[http2,ssl]
+	sys-libs/zlib:=
+	dev-libs/openssl:0=
+	system-llvm? (
+		${LLVM_DEPEND[*]}
+		llvm-libunwind? ( sys-libs/llvm-libunwind:= )
+	)
+	!system-llvm? (
+		!llvm-libunwind? (
+			elibc_musl? ( sys-libs/libunwind:= )
+		)
+	)
+"
+
+RDEPEND="${DEPEND}
+	app-eselect/eselect-rust
+	dev-lang/rust-common
+	sys-apps/lsb-release
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+
+REQUIRED_USE="|| ( ${ALL_LLVM_TARGETS[*]} )
+	miri? ( nightly )
+	parallel-compiler? ( nightly )
+	rust-analyzer? ( rust-src )
+	test? ( ${ALL_LLVM_TARGETS[*]} )
+	wasm? ( llvm_targets_WebAssembly )
+	x86? ( cpu_flags_x86_sse2 )
+"
+
+# we don't use cmake.eclass, but can get a warning
+CMAKE_WARN_UNUSED_CLI=no
+
+QA_FLAGS_IGNORED="
+	usr/lib/${PN}/${PV}/bin/.*
+	usr/lib/${PN}/${PV}/libexec/.*
+	usr/lib/${PN}/${PV}/lib/lib.*.so
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_SONAME="
+	usr/lib/${PN}/${PV}/lib/lib.*.so.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_PRESTRIPPED="
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/rust-llvm-dwp
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/self-contained/crtn.o
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="usr/lib/${PN}/${PV}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+# causes double bootstrap
+RESTRICT="test"
+
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/rust.asc
+
+PATCHES=(
+	"${FILESDIR}"/1.75.0-musl-dynamic-linking.patch
+	"${FILESDIR}"/1.74.1-cross-compile-libz.patch
+	#"${FILESDIR}"/1.72.0-bump-libc-deps-to-0.2.146.patch  # pending refresh
+	"${FILESDIR}"/1.70.0-ignore-broken-and-non-applicable-tests.patch
+	"${FILESDIR}"/1.67.0-doc-wasm.patch
+	# This patch shouldn't be necessary for later versions of Rust because its
+	# code was backported from master.
+	"${FILESDIR}"/1.75.0-handle-vendored-sources.patch
+)
+
+clear_vendor_checksums() {
+	sed -i 's/\("files":{\)[^}]*/\1/' "vendor/${1}/.cargo-checksum.json" || die
+}
+
+toml_usex() {
+	usex "${1}" true false
+}
+
+bootstrap_rust_version_check() {
+	# never call from pkg_pretend. eselect-rust may be not installed yet.
+	[[ ${MERGE_TYPE} == binary ]] && return
+	local rustc_wanted="$(ver_cut 1).$(($(ver_cut 2) - 1))"
+	local rustc_toonew="$(ver_cut 1).$(($(ver_cut 2) + 1))"
+	local rustc_version=( $(eselect --brief --root="${BROOT}" rust show 2>/dev/null) )
+	rustc_version=${rustc_version[0]#rust-bin-}
+	rustc_version=${rustc_version#rust-}
+
+	[[ -z "${rustc_version}" ]] && die "Failed to determine rust version, check 'eselect rust' output"
+
+	if ver_test "${rustc_version}" -lt "${rustc_wanted}" ; then
+		eerror "Rust >=${rustc_wanted} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too old"
+	elif ver_test "${rustc_version}" -ge "${rustc_toonew}" ; then
+		eerror "Rust <${rustc_toonew} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too new"
+	else
+		einfo "Using rust ${rustc_version} to build"
+	fi
+}
+
+pre_build_checks() {
+	local M=8192
+	# multiply requirements by 1.3 if we are doing x86-multilib
+	if use amd64; then
+		M=$(( $(usex abi_x86_32 13 10) * ${M} / 10 ))
+	fi
+	M=$(( $(usex clippy 128 0) + ${M} ))
+	M=$(( $(usex miri 128 0) + ${M} ))
+	M=$(( $(usex rustfmt 256 0) + ${M} ))
+	# add 2G if we compile llvm and 256M per llvm_target
+	if ! use system-llvm; then
+		M=$(( 2048 + ${M} ))
+		local ltarget
+		for ltarget in ${ALL_LLVM_TARGETS[@]}; do
+			M=$(( $(usex ${ltarget} 256 0) + ${M} ))
+		done
+	fi
+	M=$(( $(usex wasm 256 0) + ${M} ))
+	M=$(( $(usex debug 2 1) * ${M} ))
+	eshopts_push -s extglob
+	if is-flagq '-g?(gdb)?([1-9])'; then
+		M=$(( 15 * ${M} / 10 ))
+	fi
+	eshopts_pop
+	M=$(( $(usex system-bootstrap 0 1024) + ${M} ))
+	M=$(( $(usex doc 256 0) + ${M} ))
+	CHECKREQS_DISK_BUILD=${M}M check-reqs_pkg_${EBUILD_PHASE}
+}
+
+llvm_check_deps() {
+	has_version -r "sys-devel/llvm:${LLVM_SLOT}[${LLVM_TARGET_USEDEPS// /,}]"
+}
+
+# Is LLVM being linked against libc++?
+is_libcxx_linked() {
+	local code='#include <ciso646>
+#if defined(_LIBCPP_VERSION)
+	HAVE_LIBCXX
+#endif
+'
+	local out=$($(tc-getCXX) ${CXXFLAGS} ${CPPFLAGS} -x c++ -E -P - <<<"${code}") || return 1
+	[[ ${out} == *HAVE_LIBCXX* ]]
+}
+
+pkg_pretend() {
+	pre_build_checks
+}
+
+pkg_setup() {
+	pre_build_checks
+	python-any-r1_pkg_setup
+
+	export LIBGIT2_NO_PKG_CONFIG=1 #749381
+	if tc-is-cross-compiler; then
+		export PKG_CONFIG_ALLOW_CROSS=1
+		export PKG_CONFIG_PATH="${ROOT}/usr/$(get_libdir)/pkgconfig"
+		export OPENSSL_INCLUDE_DIR="${ROOT}/usr/include"
+		export OPENSSL_LIB_DIR="${ROOT}/usr/$(get_libdir)"
+
+		use system-bootstrap || die "USE=system-bootstrap is required when cross-compiling"
+		use system-llvm && die "USE=system-llvm not allowed when cross-compiling"
+		local cross_llvm_target="$(llvm_tuple_to_target "${CBUILD}")"
+		use "llvm_targets_${cross_llvm_target}" || \
+			die "Must enable LLVM_TARGETS=${cross_llvm_target} matching CBUILD=${CBUILD} when cross-compiling"
+	fi
+
+	use system-bootstrap && bootstrap_rust_version_check
+
+	if use system-llvm; then
+		llvm-r1_pkg_setup
+
+		local llvm_config="$(get_llvm_prefix)/bin/llvm-config"
+		export LLVM_LINK_SHARED=1
+		export RUSTFLAGS="${RUSTFLAGS} -Lnative=$("${llvm_config}" --libdir)"
+	fi
+}
+
+esetup_unwind_hack() {
+	# https://bugs.gentoo.org/870280
+	# this is a hack needed to bootstrap with libgcc_s linked tarball on llvm-libunwind system.
+	# it should trigger for internal bootstrap or system-bootstrap with rust-bin.
+	# the whole idea is for stage0 to bootstrap with fake libgcc_s.
+	# final stage will receive -L${T}/lib but not -lgcc_s args, producing clean compiler.
+	local fakelib="${T}/fakelib"
+	mkdir -p "${fakelib}" || die
+	# we need both symlinks, one for cargo runtime, other for linker.
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so.1" || die
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so" || die
+	export LD_LIBRARY_PATH="${fakelib}"
+	export RUSTFLAGS+=" -L${fakelib}"
+	# this is a literally magic variable that gets through cargo cache, without it some
+	# crates ignore RUSTFLAGS.
+	# this variable can not contain leading space.
+	export MAGIC_EXTRA_RUSTFLAGS+="${MAGIC_EXTRA_RUSTFLAGS:+ }-L${fakelib}"
+}
+
+src_prepare() {
+	# Clear vendor checksums for crates that we patched to bump libc.
+	# NOTE: refresh this on each bump.
+	#for i in addr2line-0.20.0 bstr cranelift-jit crossbeam-channel elasticlunr-rs handlebars icu_locid libffi \
+	#	terminal_size tracing-tree; do
+	#	clear_vendor_checksums "${i}"
+	#done
+
+	if ! use system-bootstrap; then
+		has_version sys-devel/gcc || esetup_unwind_hack
+		local rust_stage0_root="${WORKDIR}"/rust-stage0
+		local rust_stage0="rust-${RUST_STAGE0_VERSION}-$(rust_abi "${CBUILD}")"
+
+		"${WORKDIR}/${rust_stage0}"/install.sh --disable-ldconfig \
+			--without=rust-docs-json-preview,rust-docs --destdir="${rust_stage0_root}" --prefix=/ || die
+	fi
+
+	default
+}
+
+src_configure() {
+	filter-lto # https://bugs.gentoo.org/862109 https://bugs.gentoo.org/866231
+
+	local rust_target="" rust_targets="" arch_cflags
+
+	# Collect rust target names to compile standard libs for all ABIs.
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_targets+=",\"$(rust_abi $(get_abi_CHOST ${v##*.}))\""
+	done
+	if use wasm; then
+		rust_targets+=",\"wasm32-unknown-unknown\""
+		if use system-llvm; then
+			# un-hardcode rust-lld linker for this target
+			# https://bugs.gentoo.org/715348
+			sed -i '/linker:/ s/rust-lld/wasm-ld/' compiler/rustc_target/src/spec/base/wasm.rs || die
+		fi
+	fi
+	rust_targets="${rust_targets#,}"
+
+	# cargo and rustdoc are mandatory and should always be included
+	local tools='"cargo","rustdoc", "rust-demangler"'
+	use clippy && tools+=',"clippy"'
+	use miri && tools+=',"miri"'
+	use rustfmt && tools+=',"rustfmt"'
+	use rust-analyzer && tools+=',"rust-analyzer"'
+	use rust-src && tools+=',"src"'
+
+	local rust_stage0_root
+	if use system-bootstrap; then
+		local printsysroot
+		printsysroot="$(rustc --print sysroot || die "Can't determine rust's sysroot")"
+		rust_stage0_root="${printsysroot}"
+	else
+		rust_stage0_root="${WORKDIR}"/rust-stage0
+	fi
+	# in case of prefix it will be already prefixed, as --print sysroot returns full path
+	[[ -d ${rust_stage0_root} ]] || die "${rust_stage0_root} is not a directory"
+
+	rust_target="$(rust_abi)"
+	rust_build="$(rust_abi "${CBUILD}")"
+	rust_host="$(rust_abi "${CHOST}")"
+
+	local cm_btype="$(usex debug DEBUG RELEASE)"
+	cat <<- _EOF_ > "${S}"/config.toml
+		changelog-seen = 2
+		[llvm]
+		download-ci-llvm = false
+		optimize = $(toml_usex !debug)
+		release-debuginfo = $(toml_usex debug)
+		assertions = $(toml_usex debug)
+		ninja = true
+		targets = "${LLVM_TARGETS// /;}"
+		experimental-targets = ""
+		link-shared = $(toml_usex system-llvm)
+		$(if is_libcxx_linked; then
+			# https://bugs.gentoo.org/732632
+			echo "use-libcxx = true"
+			echo "static-libstdcpp = false"
+		fi)
+		$(case "${rust_target}" in
+			i586-*-linux-*)
+				# https://github.com/rust-lang/rust/issues/93059
+				echo 'cflags = "-fcf-protection=none"'
+				echo 'cxxflags = "-fcf-protection=none"'
+				echo 'ldflags = "-fcf-protection=none"'
+				;;
+			*)
+				;;
+		esac)
+		enable-warnings = false
+		[llvm.build-config]
+		CMAKE_VERBOSE_MAKEFILE = "ON"
+		$(if ! tc-is-cross-compiler; then
+			# When cross-compiling, LLVM is compiled twice, once for host and
+			# once for target.  Unfortunately, this build configuration applies
+			# to both, which means any flags applicable to one target but not
+			# the other will break.  Conditionally disable respecting user
+			# flags when cross-compiling.
+			echo "CMAKE_C_FLAGS_${cm_btype} = \"${CFLAGS}\""
+			echo "CMAKE_CXX_FLAGS_${cm_btype} = \"${CXXFLAGS}\""
+			echo "CMAKE_EXE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_MODULE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_SHARED_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_STATIC_LINKER_FLAGS_${cm_btype} = \"${ARFLAGS}\""
+		fi)
+		[build]
+		build-stage = 2
+		test-stage = 2
+		build = "${rust_build}"
+		host = ["${rust_host}"]
+		target = [${rust_targets}]
+		cargo = "${rust_stage0_root}/bin/cargo"
+		rustc = "${rust_stage0_root}/bin/rustc"
+		rustfmt = "${rust_stage0_root}/bin/rustfmt"
+		docs = $(toml_usex doc)
+		compiler-docs = false
+		submodules = false
+		python = "${EPYTHON}"
+		locked-deps = true
+		vendor = true
+		extended = true
+		tools = [${tools}]
+		verbose = 2
+		sanitizers = false
+		profiler = true
+		cargo-native-static = false
+		[install]
+		prefix = "${EPREFIX}/usr/lib/${PN}/${PV}"
+		sysconfdir = "etc"
+		docdir = "share/doc/rust"
+		bindir = "bin"
+		libdir = "lib"
+		mandir = "share/man"
+		[rust]
+		# https://github.com/rust-lang/rust/issues/54872
+		codegen-units-std = 1
+		optimize = true
+		debug = $(toml_usex debug)
+		debug-assertions = $(toml_usex debug)
+		debug-assertions-std = $(toml_usex debug)
+		debuginfo-level = $(usex debug 2 0)
+		debuginfo-level-rustc = $(usex debug 2 0)
+		debuginfo-level-std = $(usex debug 2 0)
+		debuginfo-level-tools = $(usex debug 2 0)
+		debuginfo-level-tests = 0
+		backtrace = true
+		incremental = false
+		$(if ! tc-is-cross-compiler; then
+			echo "default-linker = \"$(tc-getCC)\""
+		fi)
+		parallel-compiler = $(toml_usex parallel-compiler)
+		channel = "$(usex nightly nightly stable)"
+		description = "gentoo"
+		rpath = false
+		verbose-tests = true
+		optimize-tests = $(toml_usex !debug)
+		codegen-tests = true
+		dist-src = false
+		remap-debuginfo = true
+		lld = $(usex system-llvm false $(toml_usex wasm))
+		# only deny warnings if doc+wasm are NOT requested, documenting stage0 wasm std fails without it
+		# https://github.com/rust-lang/rust/issues/74976
+		# https://github.com/rust-lang/rust/issues/76526
+		deny-warnings = $(usex wasm $(usex doc false true) true)
+		backtrace-on-ice = true
+		jemalloc = false
+		lto = "$(usex lto fat off)"
+		[dist]
+		src-tarball = false
+		compression-formats = ["xz"]
+		compression-profile = "balanced"
+	_EOF_
+
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_target=$(rust_abi $(get_abi_CHOST ${v##*.}))
+		arch_cflags="$(get_abi_CFLAGS ${v##*.})"
+
+		export CFLAGS_${rust_target//-/_}="${arch_cflags}"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${rust_target}]
+			ar = "$(tc-getAR)"
+			cc = "$(tc-getCC)"
+			cxx = "$(tc-getCXX)"
+			linker = "$(tc-getCC)"
+			ranlib = "$(tc-getRANLIB)"
+			llvm-libunwind = "$(usex llvm-libunwind $(usex system-llvm system in-tree) no)"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		# by default librustc_target/spec/linux_musl_base.rs sets base.crt_static_default = true;
+		# but we patch it and set to false here as well
+		if use elibc_musl; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				crt-static = false
+			_EOF_
+		fi
+	done
+	if use wasm; then
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.wasm32-unknown-unknown]
+			linker = "$(usex system-llvm lld rust-lld)"
+			# wasm target does not have profiler_builtins https://bugs.gentoo.org/848483
+			profiler = false
+		_EOF_
+	fi
+
+	if [[ -n ${I_KNOW_WHAT_I_AM_DOING_CROSS} ]]; then # whitespace intentionally shifted below
+	# experimental cross support
+	# discussion: https://bugs.gentoo.org/679878
+	# TODO: c*flags, clang, system-llvm, cargo.eclass target support
+	# it would be much better if we could split out stdlib
+	# complilation to separate ebuild and abuse CATEGORY to
+	# just install to /usr/lib/rustlib/<target>
+
+	# extra targets defined as a bash array
+	# spec format:  <LLVM target>:<rust-target>:<CTARGET>
+	# best place would be /etc/portage/env/dev-lang/rust
+	# Example:
+	# RUST_CROSS_TARGETS=(
+	#	"AArch64:aarch64-unknown-linux-gnu:aarch64-unknown-linux-gnu"
+	# )
+	# no extra hand holding is done, no target transformations, all
+	# values are passed as-is with just basic checks, so it's up to user to supply correct values
+	# valid rust targets can be obtained with
+	# 	rustc --print target-list
+	# matching cross toolchain has to be installed
+	# matching LLVM_TARGET has to be enabled for both rust and llvm (if using system one)
+	# only gcc toolchains installed with crossdev are checked for now.
+
+	# BUG: we can't pass host flags to cross compiler, so just filter for now
+	# BUG: this should be more fine-grained.
+	filter-flags '-mcpu=*' '-march=*' '-mtune=*'
+
+	local cross_target_spec
+	for cross_target_spec in "${RUST_CROSS_TARGETS[@]}";do
+		# extracts first element form <LLVM target>:<rust-target>:<CTARGET>
+		local cross_llvm_target="${cross_target_spec%%:*}"
+		# extracts toolchain triples, <rust-target>:<CTARGET>
+		local cross_triples="${cross_target_spec#*:}"
+		# extracts first element after before : separator
+		local cross_rust_target="${cross_triples%%:*}"
+		# extracts last element after : separator
+		local cross_toolchain="${cross_triples##*:}"
+		use llvm_targets_${cross_llvm_target} || die "need llvm_targets_${cross_llvm_target} target enabled"
+		command -v ${cross_toolchain}-gcc > /dev/null 2>&1 || die "need ${cross_toolchain} cross toolchain"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${cross_rust_target}]
+			ar = "${cross_toolchain}-ar"
+			cc = "${cross_toolchain}-gcc"
+			cxx = "${cross_toolchain}-g++"
+			linker = "${cross_toolchain}-gcc"
+			ranlib = "${cross_toolchain}-ranlib"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		if [[ "${cross_toolchain}" == *-musl* ]]; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				musl-root = "$(${cross_toolchain}-gcc -print-sysroot)/usr"
+			_EOF_
+		fi
+
+		# append cross target to "normal" target list
+		# example 'target = ["powerpc64le-unknown-linux-gnu"]'
+		# becomes 'target = ["powerpc64le-unknown-linux-gnu","aarch64-unknown-linux-gnu"]'
+
+		rust_targets="${rust_targets},\"${cross_rust_target}\""
+		sed -i "/^target = \[/ s#\[.*\]#\[${rust_targets}\]#" config.toml || die
+
+		ewarn
+		ewarn "Enabled ${cross_rust_target} rust target"
+		ewarn "Using ${cross_toolchain} cross toolchain"
+		ewarn
+		if ! has_version -b 'sys-devel/binutils[multitarget]' ; then
+			ewarn "'sys-devel/binutils[multitarget]' is not installed"
+			ewarn "'strip' will be unable to strip cross libraries"
+			ewarn "cross targets will be installed with full debug information"
+			ewarn "enable 'multitarget' USE flag for binutils to be able to strip object files"
+			ewarn
+			ewarn "Alternatively llvm-strip can be used, it supports stripping any target"
+			ewarn "define STRIP=\"llvm-strip\" to use it (experimental)"
+			ewarn
+		fi
+	done
+	fi # I_KNOW_WHAT_I_AM_DOING_CROSS
+
+	einfo "Rust configured with the following flags:"
+	echo
+	echo RUSTFLAGS="\"${RUSTFLAGS}\""
+	echo RUSTFLAGS_BOOTSTRAP="\"${RUSTFLAGS_BOOTSTRAP}\""
+	echo RUSTFLAGS_NOT_BOOTSTRAP="\"${RUSTFLAGS_NOT_BOOTSTRAP}\""
+	echo MAGIC_EXTRA_RUSTFLAGS="\"${MAGIC_EXTRA_RUSTFLAGS}\""
+	env | grep "CARGO_TARGET_.*_RUSTFLAGS="
+	env | grep "CFLAGS_.*"
+	echo
+	einfo "config.toml contents:"
+	cat "${S}"/config.toml || die
+	echo
+}
+
+src_compile() {
+	RUST_BACKTRACE=1 "${EPYTHON}" ./x.py build -vvv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+}
+
+src_test() {
+	# https://rustc-dev-guide.rust-lang.org/tests/intro.html
+
+	# those are basic and codegen tests.
+	local tests=(
+		codegen
+		codegen-units
+		compile-fail
+		incremental
+		mir-opt
+		pretty
+		run-make
+	)
+
+	# fails if llvm is not built with ALL targets.
+	# and known to fail with system llvm sometimes.
+	use system-llvm || tests+=( assembly )
+
+	# fragile/expensive/less important tests
+	# or tests that require extra builds
+	# TODO: instead of skipping, just make some nonfatal.
+	if [[ ${ERUST_RUN_EXTRA_TESTS:-no} != no ]]; then
+		tests+=(
+			rustdoc
+			rustdoc-js
+			rustdoc-js-std
+			rustdoc-ui
+			run-make-fulldeps
+			ui
+			ui-fulldeps
+		)
+	fi
+
+	local i failed=()
+	einfo "rust_src_test: enabled tests ${tests[@]/#/src/test/}"
+	for i in "${tests[@]}"; do
+		local t="src/test/${i}"
+		einfo "rust_src_test: running ${t}"
+		if ! RUST_BACKTRACE=1 "${EPYTHON}" ./x.py test -vv --config="${S}"/config.toml \
+				-j$(makeopts_jobs) --no-doc --no-fail-fast "${t}"
+		then
+				failed+=( "${t}" )
+				eerror "rust_src_test: ${t} failed"
+		fi
+	done
+
+	if [[ ${#failed[@]} -ne 0 ]]; then
+		eerror "rust_src_test: failure summary: ${failed[@]}"
+		die "aborting due to test failures"
+	fi
+}
+
+src_install() {
+	DESTDIR="${D}" "${EPYTHON}" ./x.py install -vv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+
+	# bug #689562, #689160
+	rm -v "${ED}/usr/lib/${PN}/${PV}/etc/bash_completion.d/cargo" || die
+	rmdir -v "${ED}/usr/lib/${PN}/${PV}"/etc{/bash_completion.d,} || die
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+		rust-demangler
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use miri && symlinks+=( miri cargo-miri )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths: ${symlinks[@]}"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /usr/lib/rust/<ver>/bin/rustc-<ver>
+		# need to fix eselect-rust to remove this hack.
+		local ver_i="${i}-${PV}"
+		if [[ -f "${ED}/usr/lib/${PN}/${PV}/bin/${i}" ]]; then
+			einfo "Installing ${i} symlink"
+			ln -v "${ED}/usr/lib/${PN}/${PV}/bin/${i}" "${ED}/usr/lib/${PN}/${PV}/bin/${ver_i}" || die
+		else
+			ewarn "${i} symlink requested, but source file not found"
+			ewarn "please report this"
+		fi
+		dosym "../lib/${PN}/${PV}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "${PV}/lib" "/usr/lib/${PN}/lib-${PV}"
+	dosym "${PV}/libexec" "/usr/lib/${PN}/libexec-${PV}"
+	dosym "${PV}/share/man" "/usr/lib/${PN}/man-${PV}"
+	dosym "rust/${PV}/lib/rustlib" "/usr/lib/rustlib-${PV}"
+	dosym "../../lib/${PN}/${PV}/share/doc/rust" "/usr/share/doc/${P}"
+
+	newenvd - "50${P}" <<-_EOF_
+		LDPATH="${EPREFIX}/usr/lib/rust/lib-${PV}"
+		MANPATH="${EPREFIX}/usr/lib/rust/man-${PV}"
+	_EOF_
+
+	rm -rf "${ED}/usr/lib/${PN}/${PV}"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/bin"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/doc"/*.old || die
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+		/usr/bin/cargo
+		/usr/bin/rustdoc
+		/usr/bin/rust-demangler
+		/usr/bin/rust-gdb
+		/usr/bin/rust-gdbgui
+		/usr/bin/rust-lldb
+		/usr/lib/rustlib
+		/usr/lib/rust/lib
+		/usr/lib/rust/libexec
+		/usr/lib/rust/man
+		/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use miri; then
+		echo /usr/bin/miri >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-miri >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+
+	if use dist; then
+		insinto "/usr/lib/${PN}/${PV}/dist"
+		doins -r "${S}/build/dist/."
+	fi
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	if has_version dev-debug/gdb || has_version dev-debug/lldb; then
+		elog "Rust installs a helper script for calling GDB and LLDB,"
+		elog "for your convenience it is installed under /usr/bin/rust-{gdb,lldb}-${PV}."
+	fi
+
+	if has_version app-editors/emacs; then
+		elog "install app-emacs/rust-mode to get emacs support for rust."
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		elog "install app-vim/rust-vim to get vim support for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust/rust-1.77.1-r100.ebuild b/dev-lang/rust/rust-1.77.1-r100.ebuild
new file mode 100644
index 000000000000..a6e6f0023b76
--- /dev/null
+++ b/dev-lang/rust/rust-1.77.1-r100.ebuild
@@ -0,0 +1,765 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 17 )
+PYTHON_COMPAT=( python3_{10..12} )
+
+inherit check-reqs estack flag-o-matic llvm-r1 multiprocessing \
+	multilib multilib-build python-any-r1 rust-toolchain toolchain-funcs verify-sig
+
+if [[ ${PV} = *beta* ]]; then
+	betaver=${PV//*beta}
+	BETA_SNAPSHOT="${betaver:0:4}-${betaver:4:2}-${betaver:6:2}"
+	MY_P="rustc-beta"
+	SRC="${BETA_SNAPSHOT}/rustc-beta-src.tar.xz -> rustc-${PV}-src.tar.xz"
+else
+	MY_P="rustc-${PV}"
+	SRC="${MY_P}-src.tar.xz"
+	KEYWORDS="amd64 arm arm64 ~loong ppc ppc64 ~riscv sparc x86"
+fi
+S="${WORKDIR}/${MY_P}-src"
+
+RUST_STAGE0_VERSION="1.$(($(ver_cut 2) - 1)).0"
+
+DESCRIPTION="Systems programming language from Mozilla"
+HOMEPAGE="https://www.rust-lang.org/"
+
+SRC_URI="
+	https://static.rust-lang.org/dist/${SRC}
+	verify-sig? ( https://static.rust-lang.org/dist/${SRC}.asc )
+	!system-bootstrap? ( $(rust_all_arch_uris rust-${RUST_STAGE0_VERSION}) )
+"
+
+# keep in sync with llvm ebuild of the same version as bundled one.
+ALL_LLVM_TARGETS=( AArch64 AMDGPU ARC ARM AVR BPF CSKY DirectX Hexagon Lanai
+	LoongArch M68k Mips MSP430 NVPTX PowerPC RISCV Sparc SPIRV SystemZ VE
+	WebAssembly X86 XCore Xtensa )
+ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
+LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/(-)?}
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+
+IUSE="big-endian clippy cpu_flags_x86_sse2 debug dist doc llvm-libunwind lto miri nightly parallel-compiler rustfmt rust-analyzer rust-src system-bootstrap system-llvm test wasm ${ALL_LLVM_TARGETS[*]}"
+
+LLVM_DEPEND=()
+# splitting usedeps needed to avoid CI/pkgcheck's UncheckableDep limitation
+for _x in "${ALL_LLVM_TARGETS[@]}"; do
+	LLVM_DEPEND+=( "	${_x}? ( $(llvm_gen_dep "sys-devel/llvm:\${LLVM_SLOT}[${_x}]") )" )
+done
+LLVM_DEPEND+=( "	wasm? ( $(llvm_gen_dep 'sys-devel/lld:${LLVM_SLOT}') )" )
+LLVM_DEPEND+=( "	$(llvm_gen_dep 'sys-devel/llvm:${LLVM_SLOT}')" )
+
+# to bootstrap we need at least exactly previous version, or same.
+# most of the time previous versions fail to bootstrap with newer
+# for example 1.47.x, requires at least 1.46.x, 1.47.x is ok,
+# but it fails to bootstrap with 1.48.x
+# https://github.com/rust-lang/rust/blob/${PV}/src/stage0.json
+RUST_DEP_PREV="$(ver_cut 1).$(($(ver_cut 2) - 1))*"
+RUST_DEP_CURR="$(ver_cut 1).$(ver_cut 2)*"
+BOOTSTRAP_DEPEND="||
+	(
+		=dev-lang/rust-"${RUST_DEP_PREV}"
+		=dev-lang/rust-bin-"${RUST_DEP_PREV}"
+		=dev-lang/rust-"${RUST_DEP_CURR}"
+		=dev-lang/rust-bin-"${RUST_DEP_CURR}"
+	)
+"
+
+BDEPEND="${PYTHON_DEPS}
+	app-eselect/eselect-rust
+	|| (
+		>=sys-devel/gcc-4.7
+		>=sys-devel/clang-3.5
+	)
+	system-bootstrap? ( ${BOOTSTRAP_DEPEND} )
+	!system-llvm? (
+		>=dev-build/cmake-3.13.4
+		app-alternatives/ninja
+	)
+	test? ( dev-debug/gdb )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+DEPEND="
+	>=app-arch/xz-utils-5.2
+	net-misc/curl:=[http2,ssl]
+	sys-libs/zlib:=
+	dev-libs/openssl:0=
+	system-llvm? (
+		${LLVM_DEPEND[*]}
+		llvm-libunwind? ( sys-libs/llvm-libunwind:= )
+	)
+	!system-llvm? (
+		!llvm-libunwind? (
+			elibc_musl? ( sys-libs/libunwind:= )
+		)
+	)
+"
+
+RDEPEND="${DEPEND}
+	app-eselect/eselect-rust
+	dev-lang/rust-common
+	sys-apps/lsb-release
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+
+REQUIRED_USE="|| ( ${ALL_LLVM_TARGETS[*]} )
+	miri? ( nightly )
+	parallel-compiler? ( nightly )
+	rust-analyzer? ( rust-src )
+	test? ( ${ALL_LLVM_TARGETS[*]} )
+	wasm? ( llvm_targets_WebAssembly )
+	x86? ( cpu_flags_x86_sse2 )
+"
+
+# we don't use cmake.eclass, but can get a warning
+CMAKE_WARN_UNUSED_CLI=no
+
+QA_FLAGS_IGNORED="
+	usr/lib/${PN}/${PV}/bin/.*
+	usr/lib/${PN}/${PV}/libexec/.*
+	usr/lib/${PN}/${PV}/lib/lib.*.so
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_SONAME="
+	usr/lib/${PN}/${PV}/lib/lib.*.so.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_PRESTRIPPED="
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/rust-llvm-dwp
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/self-contained/crtn.o
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="usr/lib/${PN}/${PV}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+# causes double bootstrap
+RESTRICT="test"
+
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/rust.asc
+
+PATCHES=(
+	"${FILESDIR}"/1.75.0-musl-dynamic-linking.patch
+	"${FILESDIR}"/1.74.1-cross-compile-libz.patch
+	#"${FILESDIR}"/1.72.0-bump-libc-deps-to-0.2.146.patch  # pending refresh
+	"${FILESDIR}"/1.70.0-ignore-broken-and-non-applicable-tests.patch
+	"${FILESDIR}"/1.67.0-doc-wasm.patch
+	"${FILESDIR}"/1.76.0-loong-code-model.patch  # remove for >=1.78.0
+)
+
+clear_vendor_checksums() {
+	sed -i 's/\("files":{\)[^}]*/\1/' "vendor/${1}/.cargo-checksum.json" || die
+}
+
+toml_usex() {
+	usex "${1}" true false
+}
+
+bootstrap_rust_version_check() {
+	# never call from pkg_pretend. eselect-rust may be not installed yet.
+	[[ ${MERGE_TYPE} == binary ]] && return
+	local rustc_wanted="$(ver_cut 1).$(($(ver_cut 2) - 1))"
+	local rustc_toonew="$(ver_cut 1).$(($(ver_cut 2) + 1))"
+	local rustc_version=( $(eselect --brief --root="${BROOT}" rust show 2>/dev/null) )
+	rustc_version=${rustc_version[0]#rust-bin-}
+	rustc_version=${rustc_version#rust-}
+
+	[[ -z "${rustc_version}" ]] && die "Failed to determine rust version, check 'eselect rust' output"
+
+	if ver_test "${rustc_version}" -lt "${rustc_wanted}" ; then
+		eerror "Rust >=${rustc_wanted} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too old"
+	elif ver_test "${rustc_version}" -ge "${rustc_toonew}" ; then
+		eerror "Rust <${rustc_toonew} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too new"
+	else
+		einfo "Using rust ${rustc_version} to build"
+	fi
+}
+
+pre_build_checks() {
+	local M=8192
+	# multiply requirements by 1.3 if we are doing x86-multilib
+	if use amd64; then
+		M=$(( $(usex abi_x86_32 13 10) * ${M} / 10 ))
+	fi
+	M=$(( $(usex clippy 128 0) + ${M} ))
+	M=$(( $(usex miri 128 0) + ${M} ))
+	M=$(( $(usex rustfmt 256 0) + ${M} ))
+	# add 2G if we compile llvm and 256M per llvm_target
+	if ! use system-llvm; then
+		M=$(( 2048 + ${M} ))
+		local ltarget
+		for ltarget in ${ALL_LLVM_TARGETS[@]}; do
+			M=$(( $(usex ${ltarget} 256 0) + ${M} ))
+		done
+	fi
+	M=$(( $(usex wasm 256 0) + ${M} ))
+	M=$(( $(usex debug 2 1) * ${M} ))
+	eshopts_push -s extglob
+	if is-flagq '-g?(gdb)?([1-9])'; then
+		M=$(( 15 * ${M} / 10 ))
+	fi
+	eshopts_pop
+	M=$(( $(usex system-bootstrap 0 1024) + ${M} ))
+	M=$(( $(usex doc 256 0) + ${M} ))
+	CHECKREQS_DISK_BUILD=${M}M check-reqs_pkg_${EBUILD_PHASE}
+}
+
+llvm_check_deps() {
+	has_version -r "sys-devel/llvm:${LLVM_SLOT}[${LLVM_TARGET_USEDEPS// /,}]"
+}
+
+# Is LLVM being linked against libc++?
+is_libcxx_linked() {
+	local code='#include <ciso646>
+#if defined(_LIBCPP_VERSION)
+	HAVE_LIBCXX
+#endif
+'
+	local out=$($(tc-getCXX) ${CXXFLAGS} ${CPPFLAGS} -x c++ -E -P - <<<"${code}") || return 1
+	[[ ${out} == *HAVE_LIBCXX* ]]
+}
+
+pkg_pretend() {
+	pre_build_checks
+}
+
+pkg_setup() {
+	pre_build_checks
+	python-any-r1_pkg_setup
+
+	export LIBGIT2_NO_PKG_CONFIG=1 #749381
+	if tc-is-cross-compiler; then
+		export PKG_CONFIG_ALLOW_CROSS=1
+		export PKG_CONFIG_PATH="${ROOT}/usr/$(get_libdir)/pkgconfig"
+		export OPENSSL_INCLUDE_DIR="${ROOT}/usr/include"
+		export OPENSSL_LIB_DIR="${ROOT}/usr/$(get_libdir)"
+
+		use system-bootstrap || die "USE=system-bootstrap is required when cross-compiling"
+		use system-llvm && die "USE=system-llvm not allowed when cross-compiling"
+		local cross_llvm_target="$(llvm_tuple_to_target "${CBUILD}")"
+		use "llvm_targets_${cross_llvm_target}" || \
+			die "Must enable LLVM_TARGETS=${cross_llvm_target} matching CBUILD=${CBUILD} when cross-compiling"
+	fi
+
+	use system-bootstrap && bootstrap_rust_version_check
+
+	if use system-llvm; then
+		llvm-r1_pkg_setup
+
+		local llvm_config="$(get_llvm_prefix)/bin/llvm-config"
+		export LLVM_LINK_SHARED=1
+		export RUSTFLAGS="${RUSTFLAGS} -Lnative=$("${llvm_config}" --libdir)"
+	fi
+}
+
+esetup_unwind_hack() {
+	# https://bugs.gentoo.org/870280
+	# this is a hack needed to bootstrap with libgcc_s linked tarball on llvm-libunwind system.
+	# it should trigger for internal bootstrap or system-bootstrap with rust-bin.
+	# the whole idea is for stage0 to bootstrap with fake libgcc_s.
+	# final stage will receive -L${T}/lib but not -lgcc_s args, producing clean compiler.
+	local fakelib="${T}/fakelib"
+	mkdir -p "${fakelib}" || die
+	# we need both symlinks, one for cargo runtime, other for linker.
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so.1" || die
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so" || die
+	export LD_LIBRARY_PATH="${fakelib}"
+	export RUSTFLAGS+=" -L${fakelib}"
+	# this is a literally magic variable that gets through cargo cache, without it some
+	# crates ignore RUSTFLAGS.
+	# this variable can not contain leading space.
+	export MAGIC_EXTRA_RUSTFLAGS+="${MAGIC_EXTRA_RUSTFLAGS:+ }-L${fakelib}"
+}
+
+src_prepare() {
+	# Clear vendor checksums for crates that we patched to bump libc.
+	# NOTE: refresh this on each bump.
+	#for i in addr2line-0.20.0 bstr cranelift-jit crossbeam-channel elasticlunr-rs handlebars icu_locid libffi \
+	#	terminal_size tracing-tree; do
+	#	clear_vendor_checksums "${i}"
+	#done
+
+	if ! use system-bootstrap; then
+		has_version sys-devel/gcc || esetup_unwind_hack
+		local rust_stage0_root="${WORKDIR}"/rust-stage0
+		local rust_stage0="rust-${RUST_STAGE0_VERSION}-$(rust_abi "${CBUILD}")"
+
+		"${WORKDIR}/${rust_stage0}"/install.sh --disable-ldconfig \
+			--without=rust-docs-json-preview,rust-docs --destdir="${rust_stage0_root}" --prefix=/ || die
+	fi
+
+	default
+}
+
+src_configure() {
+	filter-lto # https://bugs.gentoo.org/862109 https://bugs.gentoo.org/866231
+
+	local rust_target="" rust_targets="" arch_cflags
+
+	# Collect rust target names to compile standard libs for all ABIs.
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_targets+=",\"$(rust_abi $(get_abi_CHOST ${v##*.}))\""
+	done
+	if use wasm; then
+		rust_targets+=",\"wasm32-unknown-unknown\""
+		if use system-llvm; then
+			# un-hardcode rust-lld linker for this target
+			# https://bugs.gentoo.org/715348
+			sed -i '/linker:/ s/rust-lld/wasm-ld/' compiler/rustc_target/src/spec/base/wasm.rs || die
+		fi
+	fi
+	rust_targets="${rust_targets#,}"
+
+	# cargo and rustdoc are mandatory and should always be included
+	local tools='"cargo","rustdoc", "rust-demangler"'
+	use clippy && tools+=',"clippy"'
+	use miri && tools+=',"miri"'
+	use rustfmt && tools+=',"rustfmt"'
+	use rust-analyzer && tools+=',"rust-analyzer","rust-analyzer-proc-macro-srv"'
+	use rust-src && tools+=',"src"'
+
+	local rust_stage0_root
+	if use system-bootstrap; then
+		local printsysroot
+		printsysroot="$(rustc --print sysroot || die "Can't determine rust's sysroot")"
+		rust_stage0_root="${printsysroot}"
+	else
+		rust_stage0_root="${WORKDIR}"/rust-stage0
+	fi
+	# in case of prefix it will be already prefixed, as --print sysroot returns full path
+	[[ -d ${rust_stage0_root} ]] || die "${rust_stage0_root} is not a directory"
+
+	rust_target="$(rust_abi)"
+	rust_build="$(rust_abi "${CBUILD}")"
+	rust_host="$(rust_abi "${CHOST}")"
+
+	local cm_btype="$(usex debug DEBUG RELEASE)"
+	cat <<- _EOF_ > "${S}"/config.toml
+		changelog-seen = 2
+		[llvm]
+		download-ci-llvm = false
+		optimize = $(toml_usex !debug)
+		release-debuginfo = $(toml_usex debug)
+		assertions = $(toml_usex debug)
+		ninja = true
+		targets = "${LLVM_TARGETS// /;}"
+		experimental-targets = ""
+		link-shared = $(toml_usex system-llvm)
+		$(if is_libcxx_linked; then
+			# https://bugs.gentoo.org/732632
+			echo "use-libcxx = true"
+			echo "static-libstdcpp = false"
+		fi)
+		$(case "${rust_target}" in
+			i586-*-linux-*)
+				# https://github.com/rust-lang/rust/issues/93059
+				echo 'cflags = "-fcf-protection=none"'
+				echo 'cxxflags = "-fcf-protection=none"'
+				echo 'ldflags = "-fcf-protection=none"'
+				;;
+			*)
+				;;
+		esac)
+		enable-warnings = false
+		[llvm.build-config]
+		CMAKE_VERBOSE_MAKEFILE = "ON"
+		$(if ! tc-is-cross-compiler; then
+			# When cross-compiling, LLVM is compiled twice, once for host and
+			# once for target.  Unfortunately, this build configuration applies
+			# to both, which means any flags applicable to one target but not
+			# the other will break.  Conditionally disable respecting user
+			# flags when cross-compiling.
+			echo "CMAKE_C_FLAGS_${cm_btype} = \"${CFLAGS}\""
+			echo "CMAKE_CXX_FLAGS_${cm_btype} = \"${CXXFLAGS}\""
+			echo "CMAKE_EXE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_MODULE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_SHARED_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_STATIC_LINKER_FLAGS_${cm_btype} = \"${ARFLAGS}\""
+		fi)
+		[build]
+		build-stage = 2
+		test-stage = 2
+		build = "${rust_build}"
+		host = ["${rust_host}"]
+		target = [${rust_targets}]
+		cargo = "${rust_stage0_root}/bin/cargo"
+		rustc = "${rust_stage0_root}/bin/rustc"
+		rustfmt = "${rust_stage0_root}/bin/rustfmt"
+		docs = $(toml_usex doc)
+		compiler-docs = false
+		submodules = false
+		python = "${EPYTHON}"
+		locked-deps = true
+		vendor = true
+		extended = true
+		tools = [${tools}]
+		verbose = 2
+		sanitizers = false
+		profiler = true
+		cargo-native-static = false
+		[install]
+		prefix = "${EPREFIX}/usr/lib/${PN}/${PV}"
+		sysconfdir = "etc"
+		docdir = "share/doc/rust"
+		bindir = "bin"
+		libdir = "lib"
+		mandir = "share/man"
+		[rust]
+		# https://github.com/rust-lang/rust/issues/54872
+		codegen-units-std = 1
+		optimize = true
+		debug = $(toml_usex debug)
+		debug-assertions = $(toml_usex debug)
+		debug-assertions-std = $(toml_usex debug)
+		debuginfo-level = $(usex debug 2 0)
+		debuginfo-level-rustc = $(usex debug 2 0)
+		debuginfo-level-std = $(usex debug 2 0)
+		debuginfo-level-tools = $(usex debug 2 0)
+		debuginfo-level-tests = 0
+		backtrace = true
+		incremental = false
+		$(if ! tc-is-cross-compiler; then
+			echo "default-linker = \"$(tc-getCC)\""
+		fi)
+		parallel-compiler = $(toml_usex parallel-compiler)
+		channel = "$(usex nightly nightly stable)"
+		description = "gentoo"
+		rpath = false
+		verbose-tests = true
+		optimize-tests = $(toml_usex !debug)
+		codegen-tests = true
+		dist-src = false
+		remap-debuginfo = true
+		lld = $(usex system-llvm false $(toml_usex wasm))
+		# only deny warnings if doc+wasm are NOT requested, documenting stage0 wasm std fails without it
+		# https://github.com/rust-lang/rust/issues/74976
+		# https://github.com/rust-lang/rust/issues/76526
+		deny-warnings = $(usex wasm $(usex doc false true) true)
+		backtrace-on-ice = true
+		jemalloc = false
+		# See https://github.com/rust-lang/rust/issues/121124
+		lto = "$(usex lto thin off)"
+		[dist]
+		src-tarball = false
+		compression-formats = ["xz"]
+		compression-profile = "balanced"
+	_EOF_
+
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_target=$(rust_abi $(get_abi_CHOST ${v##*.}))
+		arch_cflags="$(get_abi_CFLAGS ${v##*.})"
+
+		export CFLAGS_${rust_target//-/_}="${arch_cflags}"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${rust_target}]
+			ar = "$(tc-getAR)"
+			cc = "$(tc-getCC)"
+			cxx = "$(tc-getCXX)"
+			linker = "$(tc-getCC)"
+			ranlib = "$(tc-getRANLIB)"
+			llvm-libunwind = "$(usex llvm-libunwind $(usex system-llvm system in-tree) no)"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		# by default librustc_target/spec/linux_musl_base.rs sets base.crt_static_default = true;
+		# but we patch it and set to false here as well
+		if use elibc_musl; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				crt-static = false
+			_EOF_
+		fi
+	done
+	if use wasm; then
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.wasm32-unknown-unknown]
+			linker = "$(usex system-llvm lld rust-lld)"
+			# wasm target does not have profiler_builtins https://bugs.gentoo.org/848483
+			profiler = false
+		_EOF_
+	fi
+
+	if [[ -n ${I_KNOW_WHAT_I_AM_DOING_CROSS} ]]; then # whitespace intentionally shifted below
+	# experimental cross support
+	# discussion: https://bugs.gentoo.org/679878
+	# TODO: c*flags, clang, system-llvm, cargo.eclass target support
+	# it would be much better if we could split out stdlib
+	# complilation to separate ebuild and abuse CATEGORY to
+	# just install to /usr/lib/rustlib/<target>
+
+	# extra targets defined as a bash array
+	# spec format:  <LLVM target>:<rust-target>:<CTARGET>
+	# best place would be /etc/portage/env/dev-lang/rust
+	# Example:
+	# RUST_CROSS_TARGETS=(
+	#	"AArch64:aarch64-unknown-linux-gnu:aarch64-unknown-linux-gnu"
+	# )
+	# no extra hand holding is done, no target transformations, all
+	# values are passed as-is with just basic checks, so it's up to user to supply correct values
+	# valid rust targets can be obtained with
+	# 	rustc --print target-list
+	# matching cross toolchain has to be installed
+	# matching LLVM_TARGET has to be enabled for both rust and llvm (if using system one)
+	# only gcc toolchains installed with crossdev are checked for now.
+
+	# BUG: we can't pass host flags to cross compiler, so just filter for now
+	# BUG: this should be more fine-grained.
+	filter-flags '-mcpu=*' '-march=*' '-mtune=*'
+
+	local cross_target_spec
+	for cross_target_spec in "${RUST_CROSS_TARGETS[@]}";do
+		# extracts first element form <LLVM target>:<rust-target>:<CTARGET>
+		local cross_llvm_target="${cross_target_spec%%:*}"
+		# extracts toolchain triples, <rust-target>:<CTARGET>
+		local cross_triples="${cross_target_spec#*:}"
+		# extracts first element after before : separator
+		local cross_rust_target="${cross_triples%%:*}"
+		# extracts last element after : separator
+		local cross_toolchain="${cross_triples##*:}"
+		use llvm_targets_${cross_llvm_target} || die "need llvm_targets_${cross_llvm_target} target enabled"
+		command -v ${cross_toolchain}-gcc > /dev/null 2>&1 || die "need ${cross_toolchain} cross toolchain"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${cross_rust_target}]
+			ar = "${cross_toolchain}-ar"
+			cc = "${cross_toolchain}-gcc"
+			cxx = "${cross_toolchain}-g++"
+			linker = "${cross_toolchain}-gcc"
+			ranlib = "${cross_toolchain}-ranlib"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		if [[ "${cross_toolchain}" == *-musl* ]]; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				musl-root = "$(${cross_toolchain}-gcc -print-sysroot)/usr"
+			_EOF_
+		fi
+
+		# append cross target to "normal" target list
+		# example 'target = ["powerpc64le-unknown-linux-gnu"]'
+		# becomes 'target = ["powerpc64le-unknown-linux-gnu","aarch64-unknown-linux-gnu"]'
+
+		rust_targets="${rust_targets},\"${cross_rust_target}\""
+		sed -i "/^target = \[/ s#\[.*\]#\[${rust_targets}\]#" config.toml || die
+
+		ewarn
+		ewarn "Enabled ${cross_rust_target} rust target"
+		ewarn "Using ${cross_toolchain} cross toolchain"
+		ewarn
+		if ! has_version -b 'sys-devel/binutils[multitarget]' ; then
+			ewarn "'sys-devel/binutils[multitarget]' is not installed"
+			ewarn "'strip' will be unable to strip cross libraries"
+			ewarn "cross targets will be installed with full debug information"
+			ewarn "enable 'multitarget' USE flag for binutils to be able to strip object files"
+			ewarn
+			ewarn "Alternatively llvm-strip can be used, it supports stripping any target"
+			ewarn "define STRIP=\"llvm-strip\" to use it (experimental)"
+			ewarn
+		fi
+	done
+	fi # I_KNOW_WHAT_I_AM_DOING_CROSS
+
+	einfo "Rust configured with the following flags:"
+	echo
+	echo RUSTFLAGS="\"${RUSTFLAGS}\""
+	echo RUSTFLAGS_BOOTSTRAP="\"${RUSTFLAGS_BOOTSTRAP}\""
+	echo RUSTFLAGS_NOT_BOOTSTRAP="\"${RUSTFLAGS_NOT_BOOTSTRAP}\""
+	echo MAGIC_EXTRA_RUSTFLAGS="\"${MAGIC_EXTRA_RUSTFLAGS}\""
+	env | grep "CARGO_TARGET_.*_RUSTFLAGS="
+	env | grep "CFLAGS_.*"
+	echo
+	einfo "config.toml contents:"
+	cat "${S}"/config.toml || die
+	echo
+}
+
+src_compile() {
+	RUST_BACKTRACE=1 "${EPYTHON}" ./x.py build -vvv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+}
+
+src_test() {
+	# https://rustc-dev-guide.rust-lang.org/tests/intro.html
+
+	# those are basic and codegen tests.
+	local tests=(
+		codegen
+		codegen-units
+		compile-fail
+		incremental
+		mir-opt
+		pretty
+		run-make
+	)
+
+	# fails if llvm is not built with ALL targets.
+	# and known to fail with system llvm sometimes.
+	use system-llvm || tests+=( assembly )
+
+	# fragile/expensive/less important tests
+	# or tests that require extra builds
+	# TODO: instead of skipping, just make some nonfatal.
+	if [[ ${ERUST_RUN_EXTRA_TESTS:-no} != no ]]; then
+		tests+=(
+			rustdoc
+			rustdoc-js
+			rustdoc-js-std
+			rustdoc-ui
+			run-make-fulldeps
+			ui
+			ui-fulldeps
+		)
+	fi
+
+	local i failed=()
+	einfo "rust_src_test: enabled tests ${tests[@]/#/src/test/}"
+	for i in "${tests[@]}"; do
+		local t="src/test/${i}"
+		einfo "rust_src_test: running ${t}"
+		if ! RUST_BACKTRACE=1 "${EPYTHON}" ./x.py test -vv --config="${S}"/config.toml \
+				-j$(makeopts_jobs) --no-doc --no-fail-fast "${t}"
+		then
+				failed+=( "${t}" )
+				eerror "rust_src_test: ${t} failed"
+		fi
+	done
+
+	if [[ ${#failed[@]} -ne 0 ]]; then
+		eerror "rust_src_test: failure summary: ${failed[@]}"
+		die "aborting due to test failures"
+	fi
+}
+
+src_install() {
+	DESTDIR="${D}" "${EPYTHON}" ./x.py install -vv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+
+	# bug #689562, #689160
+	rm -v "${ED}/usr/lib/${PN}/${PV}/etc/bash_completion.d/cargo" || die
+	rmdir -v "${ED}/usr/lib/${PN}/${PV}"/etc{/bash_completion.d,} || die
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+		rust-demangler
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use miri && symlinks+=( miri cargo-miri )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths: ${symlinks[@]}"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /usr/lib/rust/<ver>/bin/rustc-<ver>
+		# need to fix eselect-rust to remove this hack.
+		local ver_i="${i}-${PV}"
+		if [[ -f "${ED}/usr/lib/${PN}/${PV}/bin/${i}" ]]; then
+			einfo "Installing ${i} symlink"
+			ln -v "${ED}/usr/lib/${PN}/${PV}/bin/${i}" "${ED}/usr/lib/${PN}/${PV}/bin/${ver_i}" || die
+		else
+			ewarn "${i} symlink requested, but source file not found"
+			ewarn "please report this"
+		fi
+		dosym "../lib/${PN}/${PV}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "${PV}/lib" "/usr/lib/${PN}/lib-${PV}"
+	dosym "${PV}/libexec" "/usr/lib/${PN}/libexec-${PV}"
+	dosym "${PV}/share/man" "/usr/lib/${PN}/man-${PV}"
+	dosym "rust/${PV}/lib/rustlib" "/usr/lib/rustlib-${PV}"
+	dosym "../../lib/${PN}/${PV}/share/doc/rust" "/usr/share/doc/${P}"
+
+	newenvd - "50${P}" <<-_EOF_
+		LDPATH="${EPREFIX}/usr/lib/rust/lib-${PV}"
+		MANPATH="${EPREFIX}/usr/lib/rust/man-${PV}"
+	_EOF_
+
+	rm -rf "${ED}/usr/lib/${PN}/${PV}"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/bin"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/doc"/*.old || die
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+		/usr/bin/cargo
+		/usr/bin/rustdoc
+		/usr/bin/rust-demangler
+		/usr/bin/rust-gdb
+		/usr/bin/rust-gdbgui
+		/usr/bin/rust-lldb
+		/usr/lib/rustlib
+		/usr/lib/rust/lib
+		/usr/lib/rust/libexec
+		/usr/lib/rust/man
+		/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use miri; then
+		echo /usr/bin/miri >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-miri >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+
+	if use dist; then
+		insinto "/usr/lib/${PN}/${PV}/dist"
+		doins -r "${S}/build/dist/."
+	fi
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	if has_version dev-debug/gdb || has_version dev-debug/lldb; then
+		elog "Rust installs a helper script for calling GDB and LLDB,"
+		elog "for your convenience it is installed under /usr/bin/rust-{gdb,lldb}-${PV}."
+	fi
+
+	if has_version app-editors/emacs; then
+		elog "install app-emacs/rust-mode to get emacs support for rust."
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		elog "install app-vim/rust-vim to get vim support for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust/rust-1.79.0-r100.ebuild b/dev-lang/rust/rust-1.79.0-r100.ebuild
new file mode 100644
index 000000000000..bf13cf11984a
--- /dev/null
+++ b/dev-lang/rust/rust-1.79.0-r100.ebuild
@@ -0,0 +1,768 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 18 )
+PYTHON_COMPAT=( python3_{10..13} )
+
+inherit check-reqs estack flag-o-matic llvm-r1 multiprocessing \
+	multilib multilib-build python-any-r1 rust-toolchain toolchain-funcs verify-sig
+
+if [[ ${PV} = *beta* ]]; then
+	betaver=${PV//*beta}
+	BETA_SNAPSHOT="${betaver:0:4}-${betaver:4:2}-${betaver:6:2}"
+	MY_P="rustc-beta"
+	SRC="${BETA_SNAPSHOT}/rustc-beta-src.tar.xz -> rustc-${PV}-src.tar.xz"
+else
+	MY_P="rustc-${PV}"
+	SRC="${MY_P}-src.tar.xz"
+	KEYWORDS="amd64 arm arm64 ~loong ~mips ppc ppc64 ~riscv sparc x86"
+fi
+
+RUST_STAGE0_VERSION="1.$(($(ver_cut 2) - 1)).0"
+
+DESCRIPTION="Systems programming language from Mozilla"
+HOMEPAGE="https://www.rust-lang.org/"
+
+SRC_URI="
+	https://static.rust-lang.org/dist/${SRC}
+	verify-sig? ( https://static.rust-lang.org/dist/${SRC}.asc )
+	!system-bootstrap? ( $(rust_all_arch_uris rust-${RUST_STAGE0_VERSION}) )
+"
+S="${WORKDIR}/${MY_P}-src"
+
+# keep in sync with llvm ebuild of the same version as bundled one.
+ALL_LLVM_TARGETS=( AArch64 AMDGPU ARC ARM AVR BPF CSKY DirectX Hexagon Lanai
+	LoongArch M68k Mips MSP430 NVPTX PowerPC RISCV Sparc SPIRV SystemZ VE
+	WebAssembly X86 XCore Xtensa )
+ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
+LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/(-)?}
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+
+IUSE="big-endian clippy cpu_flags_x86_sse2 debug dist doc llvm-libunwind lto miri nightly parallel-compiler rustfmt rust-analyzer rust-src system-bootstrap system-llvm test wasm ${ALL_LLVM_TARGETS[*]}"
+
+LLVM_DEPEND=()
+# splitting usedeps needed to avoid CI/pkgcheck's UncheckableDep limitation
+for _x in "${ALL_LLVM_TARGETS[@]}"; do
+	LLVM_DEPEND+=( "	${_x}? ( $(llvm_gen_dep "sys-devel/llvm:\${LLVM_SLOT}[${_x}]") )" )
+done
+LLVM_DEPEND+=( "	wasm? ( $(llvm_gen_dep 'sys-devel/lld:${LLVM_SLOT}') )" )
+LLVM_DEPEND+=( "	$(llvm_gen_dep 'sys-devel/llvm:${LLVM_SLOT}')" )
+
+# to bootstrap we need at least exactly previous version, or same.
+# most of the time previous versions fail to bootstrap with newer
+# for example 1.47.x, requires at least 1.46.x, 1.47.x is ok,
+# but it fails to bootstrap with 1.48.x
+# https://github.com/rust-lang/rust/blob/${PV}/src/stage0.json
+RUST_DEP_PREV="$(ver_cut 1).$(($(ver_cut 2) - 1))*"
+RUST_DEP_CURR="$(ver_cut 1).$(ver_cut 2)*"
+BOOTSTRAP_DEPEND="||
+	(
+		=dev-lang/rust-"${RUST_DEP_PREV}"
+		=dev-lang/rust-bin-"${RUST_DEP_PREV}"
+		=dev-lang/rust-"${RUST_DEP_CURR}"
+		=dev-lang/rust-bin-"${RUST_DEP_CURR}"
+	)
+"
+
+BDEPEND="${PYTHON_DEPS}
+	app-eselect/eselect-rust
+	|| (
+		>=sys-devel/gcc-4.7
+		>=sys-devel/clang-3.5
+	)
+	system-bootstrap? ( ${BOOTSTRAP_DEPEND} )
+	!system-llvm? (
+		>=dev-build/cmake-3.13.4
+		app-alternatives/ninja
+	)
+	test? ( dev-debug/gdb )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+DEPEND="
+	>=app-arch/xz-utils-5.2
+	net-misc/curl:=[http2,ssl]
+	sys-libs/zlib:=
+	dev-libs/openssl:0=
+	system-llvm? (
+		${LLVM_DEPEND[*]}
+		llvm-libunwind? ( sys-libs/llvm-libunwind:= )
+	)
+	!system-llvm? (
+		!llvm-libunwind? (
+			elibc_musl? ( sys-libs/libunwind:= )
+		)
+	)
+"
+
+RDEPEND="${DEPEND}
+	app-eselect/eselect-rust
+	dev-lang/rust-common
+	sys-apps/lsb-release
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+
+REQUIRED_USE="|| ( ${ALL_LLVM_TARGETS[*]} )
+	miri? ( nightly )
+	parallel-compiler? ( nightly )
+	rust-analyzer? ( rust-src )
+	test? ( ${ALL_LLVM_TARGETS[*]} )
+	wasm? ( llvm_targets_WebAssembly )
+	x86? ( cpu_flags_x86_sse2 )
+"
+
+# we don't use cmake.eclass, but can get a warning
+CMAKE_WARN_UNUSED_CLI=no
+
+QA_FLAGS_IGNORED="
+	usr/lib/${PN}/${PV}/bin/.*
+	usr/lib/${PN}/${PV}/libexec/.*
+	usr/lib/${PN}/${PV}/lib/lib.*.so
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_SONAME="
+	usr/lib/${PN}/${PV}/lib/lib.*.so.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_PRESTRIPPED="
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/rust-llvm-dwp
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/self-contained/crtn.o
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="usr/lib/${PN}/${PV}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+# causes double bootstrap
+RESTRICT="test"
+
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/rust.asc
+
+PATCHES=(
+	"${FILESDIR}"/1.78.0-musl-dynamic-linking.patch
+	"${FILESDIR}"/1.74.1-cross-compile-libz.patch
+	#"${FILESDIR}"/1.72.0-bump-libc-deps-to-0.2.146.patch  # pending refresh
+	"${FILESDIR}"/1.78.0-ignore-broken-and-non-applicable-tests.patch
+	"${FILESDIR}"/1.67.0-doc-wasm.patch
+	"${FILESDIR}"/1.79.0-revert-8c40426.patch
+)
+
+clear_vendor_checksums() {
+	sed -i 's/\("files":{\)[^}]*/\1/' "vendor/${1}/.cargo-checksum.json" || die
+}
+
+toml_usex() {
+	usex "${1}" true false
+}
+
+bootstrap_rust_version_check() {
+	# never call from pkg_pretend. eselect-rust may be not installed yet.
+	[[ ${MERGE_TYPE} == binary ]] && return
+	local rustc_wanted="$(ver_cut 1).$(($(ver_cut 2) - 1))"
+	local rustc_toonew="$(ver_cut 1).$(($(ver_cut 2) + 1))"
+	local rustc_version=( $(eselect --brief --root="${BROOT}" rust show 2>/dev/null) )
+	rustc_version=${rustc_version[0]#rust-bin-}
+	rustc_version=${rustc_version#rust-}
+
+	[[ -z "${rustc_version}" ]] && die "Failed to determine rust version, check 'eselect rust' output"
+
+	if ver_test "${rustc_version}" -lt "${rustc_wanted}" ; then
+		eerror "Rust >=${rustc_wanted} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too old"
+	elif ver_test "${rustc_version}" -ge "${rustc_toonew}" ; then
+		eerror "Rust <${rustc_toonew} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too new"
+	else
+		einfo "Using rust ${rustc_version} to build"
+	fi
+}
+
+pre_build_checks() {
+	local M=8192
+	# multiply requirements by 1.3 if we are doing x86-multilib
+	if use amd64; then
+		M=$(( $(usex abi_x86_32 13 10) * ${M} / 10 ))
+	fi
+	M=$(( $(usex clippy 128 0) + ${M} ))
+	M=$(( $(usex miri 128 0) + ${M} ))
+	M=$(( $(usex rustfmt 256 0) + ${M} ))
+	# add 2G if we compile llvm and 256M per llvm_target
+	if ! use system-llvm; then
+		M=$(( 2048 + ${M} ))
+		local ltarget
+		for ltarget in ${ALL_LLVM_TARGETS[@]}; do
+			M=$(( $(usex ${ltarget} 256 0) + ${M} ))
+		done
+	fi
+	M=$(( $(usex wasm 256 0) + ${M} ))
+	M=$(( $(usex debug 2 1) * ${M} ))
+	eshopts_push -s extglob
+	if is-flagq '-g?(gdb)?([1-9])'; then
+		M=$(( 15 * ${M} / 10 ))
+	fi
+	eshopts_pop
+	M=$(( $(usex system-bootstrap 0 1024) + ${M} ))
+	M=$(( $(usex doc 256 0) + ${M} ))
+	CHECKREQS_DISK_BUILD=${M}M check-reqs_pkg_${EBUILD_PHASE}
+}
+
+llvm_check_deps() {
+	has_version -r "sys-devel/llvm:${LLVM_SLOT}[${LLVM_TARGET_USEDEPS// /,}]"
+}
+
+# Is LLVM being linked against libc++?
+is_libcxx_linked() {
+	local code='#include <ciso646>
+#if defined(_LIBCPP_VERSION)
+	HAVE_LIBCXX
+#endif
+'
+	local out=$($(tc-getCXX) ${CXXFLAGS} ${CPPFLAGS} -x c++ -E -P - <<<"${code}") || return 1
+	[[ ${out} == *HAVE_LIBCXX* ]]
+}
+
+pkg_pretend() {
+	pre_build_checks
+}
+
+pkg_setup() {
+	pre_build_checks
+	python-any-r1_pkg_setup
+
+	export LIBGIT2_NO_PKG_CONFIG=1 #749381
+	if tc-is-cross-compiler; then
+		export PKG_CONFIG_ALLOW_CROSS=1
+		export PKG_CONFIG_PATH="${ROOT}/usr/$(get_libdir)/pkgconfig"
+		export OPENSSL_INCLUDE_DIR="${ROOT}/usr/include"
+		export OPENSSL_LIB_DIR="${ROOT}/usr/$(get_libdir)"
+
+		use system-bootstrap || die "USE=system-bootstrap is required when cross-compiling"
+		use system-llvm && die "USE=system-llvm not allowed when cross-compiling"
+		local cross_llvm_target="$(llvm_tuple_to_target "${CBUILD}")"
+		use "llvm_targets_${cross_llvm_target}" || \
+			die "Must enable LLVM_TARGETS=${cross_llvm_target} matching CBUILD=${CBUILD} when cross-compiling"
+	fi
+
+	use system-bootstrap && bootstrap_rust_version_check
+
+	if use system-llvm; then
+		llvm-r1_pkg_setup
+
+		local llvm_config="$(get_llvm_prefix)/bin/llvm-config"
+		export LLVM_LINK_SHARED=1
+		export RUSTFLAGS="${RUSTFLAGS} -Lnative=$("${llvm_config}" --libdir)"
+	fi
+}
+
+esetup_unwind_hack() {
+	# https://bugs.gentoo.org/870280
+	# this is a hack needed to bootstrap with libgcc_s linked tarball on llvm-libunwind system.
+	# it should trigger for internal bootstrap or system-bootstrap with rust-bin.
+	# the whole idea is for stage0 to bootstrap with fake libgcc_s.
+	# final stage will receive -L${T}/lib but not -lgcc_s args, producing clean compiler.
+	local fakelib="${T}/fakelib"
+	mkdir -p "${fakelib}" || die
+	# we need both symlinks, one for cargo runtime, other for linker.
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so.1" || die
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so" || die
+	export LD_LIBRARY_PATH="${fakelib}"
+	export RUSTFLAGS+=" -L${fakelib}"
+	# this is a literally magic variable that gets through cargo cache, without it some
+	# crates ignore RUSTFLAGS.
+	# this variable can not contain leading space.
+	export MAGIC_EXTRA_RUSTFLAGS+="${MAGIC_EXTRA_RUSTFLAGS:+ }-L${fakelib}"
+}
+
+src_prepare() {
+	# Clear vendor checksums for crates that we patched to bump libc.
+	# NOTE: refresh this on each bump.
+	#for i in addr2line-0.20.0 bstr cranelift-jit crossbeam-channel elasticlunr-rs handlebars icu_locid libffi \
+	#	terminal_size tracing-tree; do
+	#	clear_vendor_checksums "${i}"
+	#done
+
+	if ! use system-bootstrap; then
+		has_version sys-devel/gcc || esetup_unwind_hack
+		local rust_stage0_root="${WORKDIR}"/rust-stage0
+		local rust_stage0="rust-${RUST_STAGE0_VERSION}-$(rust_abi "${CBUILD}")"
+
+		"${WORKDIR}/${rust_stage0}"/install.sh --disable-ldconfig \
+			--without=rust-docs-json-preview,rust-docs --destdir="${rust_stage0_root}" --prefix=/ || die
+	fi
+
+	default
+}
+
+src_configure() {
+	filter-lto # https://bugs.gentoo.org/862109 https://bugs.gentoo.org/866231
+
+	local rust_target="" rust_targets="" arch_cflags
+
+	# Collect rust target names to compile standard libs for all ABIs.
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_targets+=",\"$(rust_abi $(get_abi_CHOST ${v##*.}))\""
+	done
+	if use wasm; then
+		rust_targets+=",\"wasm32-unknown-unknown\""
+		if use system-llvm; then
+			# un-hardcode rust-lld linker for this target
+			# https://bugs.gentoo.org/715348
+			sed -i '/linker:/ s/rust-lld/wasm-ld/' compiler/rustc_target/src/spec/base/wasm.rs || die
+		fi
+	fi
+	rust_targets="${rust_targets#,}"
+
+	# cargo and rustdoc are mandatory and should always be included
+	local tools='"cargo","rustdoc", "rust-demangler"'
+	use clippy && tools+=',"clippy"'
+	use miri && tools+=',"miri"'
+	use rustfmt && tools+=',"rustfmt"'
+	use rust-analyzer && tools+=',"rust-analyzer","rust-analyzer-proc-macro-srv"'
+	use rust-src && tools+=',"src"'
+
+	local rust_stage0_root
+	if use system-bootstrap; then
+		local printsysroot
+		printsysroot="$(rustc --print sysroot || die "Can't determine rust's sysroot")"
+		rust_stage0_root="${printsysroot}"
+	else
+		rust_stage0_root="${WORKDIR}"/rust-stage0
+	fi
+	# in case of prefix it will be already prefixed, as --print sysroot returns full path
+	[[ -d ${rust_stage0_root} ]] || die "${rust_stage0_root} is not a directory"
+
+	rust_target="$(rust_abi)"
+	rust_build="$(rust_abi "${CBUILD}")"
+	rust_host="$(rust_abi "${CHOST}")"
+
+	local cm_btype="$(usex debug DEBUG RELEASE)"
+	cat <<- _EOF_ > "${S}"/config.toml
+		[llvm]
+		download-ci-llvm = false
+		optimize = $(toml_usex !debug)
+		release-debuginfo = $(toml_usex debug)
+		assertions = $(toml_usex debug)
+		ninja = true
+		targets = "${LLVM_TARGETS// /;}"
+		experimental-targets = ""
+		link-shared = $(toml_usex system-llvm)
+		$(if is_libcxx_linked; then
+			# https://bugs.gentoo.org/732632
+			echo "use-libcxx = true"
+			echo "static-libstdcpp = false"
+		fi)
+		$(case "${rust_target}" in
+			i586-*-linux-*)
+				# https://github.com/rust-lang/rust/issues/93059
+				echo 'cflags = "-fcf-protection=none"'
+				echo 'cxxflags = "-fcf-protection=none"'
+				echo 'ldflags = "-fcf-protection=none"'
+				;;
+			*)
+				;;
+		esac)
+		enable-warnings = false
+		[llvm.build-config]
+		CMAKE_VERBOSE_MAKEFILE = "ON"
+		$(if ! tc-is-cross-compiler; then
+			# When cross-compiling, LLVM is compiled twice, once for host and
+			# once for target.  Unfortunately, this build configuration applies
+			# to both, which means any flags applicable to one target but not
+			# the other will break.  Conditionally disable respecting user
+			# flags when cross-compiling.
+			echo "CMAKE_C_FLAGS_${cm_btype} = \"${CFLAGS}\""
+			echo "CMAKE_CXX_FLAGS_${cm_btype} = \"${CXXFLAGS}\""
+			echo "CMAKE_EXE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_MODULE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_SHARED_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_STATIC_LINKER_FLAGS_${cm_btype} = \"${ARFLAGS}\""
+		fi)
+		[build]
+		build-stage = 2
+		test-stage = 2
+		build = "${rust_build}"
+		host = ["${rust_host}"]
+		target = [${rust_targets}]
+		cargo = "${rust_stage0_root}/bin/cargo"
+		rustc = "${rust_stage0_root}/bin/rustc"
+		rustfmt = "${rust_stage0_root}/bin/rustfmt"
+		docs = $(toml_usex doc)
+		compiler-docs = false
+		submodules = false
+		python = "${EPYTHON}"
+		locked-deps = true
+		vendor = true
+		extended = true
+		tools = [${tools}]
+		verbose = 2
+		sanitizers = false
+		profiler = true
+		cargo-native-static = false
+		[install]
+		prefix = "${EPREFIX}/usr/lib/${PN}/${PV}"
+		sysconfdir = "etc"
+		docdir = "share/doc/rust"
+		bindir = "bin"
+		libdir = "lib"
+		mandir = "share/man"
+		[rust]
+		# https://github.com/rust-lang/rust/issues/54872
+		codegen-units-std = 1
+		optimize = true
+		debug = $(toml_usex debug)
+		debug-assertions = $(toml_usex debug)
+		debug-assertions-std = $(toml_usex debug)
+		debuginfo-level = $(usex debug 2 0)
+		debuginfo-level-rustc = $(usex debug 2 0)
+		debuginfo-level-std = $(usex debug 2 0)
+		debuginfo-level-tools = $(usex debug 2 0)
+		debuginfo-level-tests = 0
+		backtrace = true
+		incremental = false
+		$(if ! tc-is-cross-compiler; then
+			echo "default-linker = \"$(tc-getCC)\""
+		fi)
+		parallel-compiler = $(toml_usex parallel-compiler)
+		channel = "$(usex nightly nightly stable)"
+		description = "gentoo"
+		rpath = false
+		verbose-tests = true
+		optimize-tests = $(toml_usex !debug)
+		codegen-tests = true
+		dist-src = false
+		remap-debuginfo = true
+		lld = $(usex system-llvm false $(toml_usex wasm))
+		# only deny warnings if doc+wasm are NOT requested, documenting stage0 wasm std fails without it
+		# https://github.com/rust-lang/rust/issues/74976
+		# https://github.com/rust-lang/rust/issues/76526
+		deny-warnings = $(usex wasm $(usex doc false true) true)
+		backtrace-on-ice = true
+		jemalloc = false
+		# See https://github.com/rust-lang/rust/issues/121124
+		lto = "$(usex lto thin off)"
+		[dist]
+		src-tarball = false
+		compression-formats = ["xz"]
+		compression-profile = "balanced"
+	_EOF_
+
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_target=$(rust_abi $(get_abi_CHOST ${v##*.}))
+		arch_cflags="$(get_abi_CFLAGS ${v##*.})"
+
+		export CFLAGS_${rust_target//-/_}="${arch_cflags}"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${rust_target}]
+			ar = "$(tc-getAR)"
+			cc = "$(tc-getCC)"
+			cxx = "$(tc-getCXX)"
+			linker = "$(tc-getCC)"
+			ranlib = "$(tc-getRANLIB)"
+			llvm-libunwind = "$(usex llvm-libunwind $(usex system-llvm system in-tree) no)"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		# by default librustc_target/spec/linux_musl_base.rs sets base.crt_static_default = true;
+		# but we patch it and set to false here as well
+		if use elibc_musl; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				crt-static = false
+				musl-root = "$($(tc-getCC) -print-sysroot)/usr"
+			_EOF_
+		fi
+	done
+	if use wasm; then
+		wasm_target="wasm32-unknown-unknown"
+		export CFLAGS_${wasm_target//-/_}="$(filter-flags '-mcpu*' '-march*' '-mtune*'; echo "$CFLAGS")"
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.wasm32-unknown-unknown]
+			linker = "$(usex system-llvm lld rust-lld)"
+			# wasm target does not have profiler_builtins https://bugs.gentoo.org/848483
+			profiler = false
+		_EOF_
+	fi
+
+	if [[ -n ${I_KNOW_WHAT_I_AM_DOING_CROSS} ]]; then # whitespace intentionally shifted below
+	# experimental cross support
+	# discussion: https://bugs.gentoo.org/679878
+	# TODO: c*flags, clang, system-llvm, cargo.eclass target support
+	# it would be much better if we could split out stdlib
+	# complilation to separate ebuild and abuse CATEGORY to
+	# just install to /usr/lib/rustlib/<target>
+
+	# extra targets defined as a bash array
+	# spec format:  <LLVM target>:<rust-target>:<CTARGET>
+	# best place would be /etc/portage/env/dev-lang/rust
+	# Example:
+	# RUST_CROSS_TARGETS=(
+	#	"AArch64:aarch64-unknown-linux-gnu:aarch64-unknown-linux-gnu"
+	# )
+	# no extra hand holding is done, no target transformations, all
+	# values are passed as-is with just basic checks, so it's up to user to supply correct values
+	# valid rust targets can be obtained with
+	# 	rustc --print target-list
+	# matching cross toolchain has to be installed
+	# matching LLVM_TARGET has to be enabled for both rust and llvm (if using system one)
+	# only gcc toolchains installed with crossdev are checked for now.
+
+	# BUG: we can't pass host flags to cross compiler, so just filter for now
+	# BUG: this should be more fine-grained.
+	filter-flags '-mcpu=*' '-march=*' '-mtune=*'
+
+	local cross_target_spec
+	for cross_target_spec in "${RUST_CROSS_TARGETS[@]}";do
+		# extracts first element form <LLVM target>:<rust-target>:<CTARGET>
+		local cross_llvm_target="${cross_target_spec%%:*}"
+		# extracts toolchain triples, <rust-target>:<CTARGET>
+		local cross_triples="${cross_target_spec#*:}"
+		# extracts first element after before : separator
+		local cross_rust_target="${cross_triples%%:*}"
+		# extracts last element after : separator
+		local cross_toolchain="${cross_triples##*:}"
+		use llvm_targets_${cross_llvm_target} || die "need llvm_targets_${cross_llvm_target} target enabled"
+		command -v ${cross_toolchain}-gcc > /dev/null 2>&1 || die "need ${cross_toolchain} cross toolchain"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${cross_rust_target}]
+			ar = "${cross_toolchain}-ar"
+			cc = "${cross_toolchain}-gcc"
+			cxx = "${cross_toolchain}-g++"
+			linker = "${cross_toolchain}-gcc"
+			ranlib = "${cross_toolchain}-ranlib"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		if [[ "${cross_toolchain}" == *-musl* ]]; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				musl-root = "$(${cross_toolchain}-gcc -print-sysroot)/usr"
+			_EOF_
+		fi
+
+		# append cross target to "normal" target list
+		# example 'target = ["powerpc64le-unknown-linux-gnu"]'
+		# becomes 'target = ["powerpc64le-unknown-linux-gnu","aarch64-unknown-linux-gnu"]'
+
+		rust_targets="${rust_targets},\"${cross_rust_target}\""
+		sed -i "/^target = \[/ s#\[.*\]#\[${rust_targets}\]#" config.toml || die
+
+		ewarn
+		ewarn "Enabled ${cross_rust_target} rust target"
+		ewarn "Using ${cross_toolchain} cross toolchain"
+		ewarn
+		if ! has_version -b 'sys-devel/binutils[multitarget]' ; then
+			ewarn "'sys-devel/binutils[multitarget]' is not installed"
+			ewarn "'strip' will be unable to strip cross libraries"
+			ewarn "cross targets will be installed with full debug information"
+			ewarn "enable 'multitarget' USE flag for binutils to be able to strip object files"
+			ewarn
+			ewarn "Alternatively llvm-strip can be used, it supports stripping any target"
+			ewarn "define STRIP=\"llvm-strip\" to use it (experimental)"
+			ewarn
+		fi
+	done
+	fi # I_KNOW_WHAT_I_AM_DOING_CROSS
+
+	einfo "Rust configured with the following flags:"
+	echo
+	echo RUSTFLAGS="\"${RUSTFLAGS}\""
+	echo RUSTFLAGS_BOOTSTRAP="\"${RUSTFLAGS_BOOTSTRAP}\""
+	echo RUSTFLAGS_NOT_BOOTSTRAP="\"${RUSTFLAGS_NOT_BOOTSTRAP}\""
+	echo MAGIC_EXTRA_RUSTFLAGS="\"${MAGIC_EXTRA_RUSTFLAGS}\""
+	env | grep "CARGO_TARGET_.*_RUSTFLAGS="
+	env | grep "CFLAGS_.*"
+	echo
+	einfo "config.toml contents:"
+	cat "${S}"/config.toml || die
+	echo
+}
+
+src_compile() {
+	RUST_BACKTRACE=1 "${EPYTHON}" ./x.py build -vvv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+}
+
+src_test() {
+	# https://rustc-dev-guide.rust-lang.org/tests/intro.html
+
+	# those are basic and codegen tests.
+	local tests=(
+		codegen
+		codegen-units
+		compile-fail
+		incremental
+		mir-opt
+		pretty
+		run-make
+	)
+
+	# fails if llvm is not built with ALL targets.
+	# and known to fail with system llvm sometimes.
+	use system-llvm || tests+=( assembly )
+
+	# fragile/expensive/less important tests
+	# or tests that require extra builds
+	# TODO: instead of skipping, just make some nonfatal.
+	if [[ ${ERUST_RUN_EXTRA_TESTS:-no} != no ]]; then
+		tests+=(
+			rustdoc
+			rustdoc-js
+			rustdoc-js-std
+			rustdoc-ui
+			run-make-fulldeps
+			ui
+			ui-fulldeps
+		)
+	fi
+
+	local i failed=()
+	einfo "rust_src_test: enabled tests ${tests[@]/#/src/test/}"
+	for i in "${tests[@]}"; do
+		local t="src/test/${i}"
+		einfo "rust_src_test: running ${t}"
+		if ! RUST_BACKTRACE=1 "${EPYTHON}" ./x.py test -vv --config="${S}"/config.toml \
+				-j$(makeopts_jobs) --no-doc --no-fail-fast "${t}"
+		then
+				failed+=( "${t}" )
+				eerror "rust_src_test: ${t} failed"
+		fi
+	done
+
+	if [[ ${#failed[@]} -ne 0 ]]; then
+		eerror "rust_src_test: failure summary: ${failed[@]}"
+		die "aborting due to test failures"
+	fi
+}
+
+src_install() {
+	DESTDIR="${D}" "${EPYTHON}" ./x.py install -vv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+
+	# bug #689562, #689160
+	rm -v "${ED}/usr/lib/${PN}/${PV}/etc/bash_completion.d/cargo" || die
+	rmdir -v "${ED}/usr/lib/${PN}/${PV}"/etc{/bash_completion.d,} || die
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+		rust-demangler
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use miri && symlinks+=( miri cargo-miri )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths: ${symlinks[@]}"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /usr/lib/rust/<ver>/bin/rustc-<ver>
+		# need to fix eselect-rust to remove this hack.
+		local ver_i="${i}-${PV}"
+		if [[ -f "${ED}/usr/lib/${PN}/${PV}/bin/${i}" ]]; then
+			einfo "Installing ${i} symlink"
+			ln -v "${ED}/usr/lib/${PN}/${PV}/bin/${i}" "${ED}/usr/lib/${PN}/${PV}/bin/${ver_i}" || die
+		else
+			ewarn "${i} symlink requested, but source file not found"
+			ewarn "please report this"
+		fi
+		dosym "../lib/${PN}/${PV}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "${PV}/lib" "/usr/lib/${PN}/lib-${PV}"
+	dosym "${PV}/libexec" "/usr/lib/${PN}/libexec-${PV}"
+	dosym "${PV}/share/man" "/usr/lib/${PN}/man-${PV}"
+	dosym "rust/${PV}/lib/rustlib" "/usr/lib/rustlib-${PV}"
+	dosym "../../lib/${PN}/${PV}/share/doc/rust" "/usr/share/doc/${P}"
+
+	newenvd - "50${P}" <<-_EOF_
+		LDPATH="${EPREFIX}/usr/lib/rust/lib-${PV}"
+		MANPATH="${EPREFIX}/usr/lib/rust/man-${PV}"
+	_EOF_
+
+	rm -rf "${ED}/usr/lib/${PN}/${PV}"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/bin"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/doc"/*.old || die
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+		/usr/bin/cargo
+		/usr/bin/rustdoc
+		/usr/bin/rust-demangler
+		/usr/bin/rust-gdb
+		/usr/bin/rust-gdbgui
+		/usr/bin/rust-lldb
+		/usr/lib/rustlib
+		/usr/lib/rust/lib
+		/usr/lib/rust/libexec
+		/usr/lib/rust/man
+		/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use miri; then
+		echo /usr/bin/miri >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-miri >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+
+	if use dist; then
+		"${EPYTHON}" ./x.py dist -vv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+		insinto "/usr/lib/${PN}/${PV}/dist"
+		doins -r "${S}/build/dist/."
+	fi
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	if has_version dev-debug/gdb || has_version dev-debug/lldb; then
+		elog "Rust installs a helper script for calling GDB and LLDB,"
+		elog "for your convenience it is installed under /usr/bin/rust-{gdb,lldb}-${PV}."
+	fi
+
+	if has_version app-editors/emacs; then
+		elog "install app-emacs/rust-mode to get emacs support for rust."
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		elog "install app-vim/rust-vim to get vim support for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust/rust-1.80.1-r100.ebuild b/dev-lang/rust/rust-1.80.1-r100.ebuild
new file mode 100644
index 000000000000..782d0f8d92f5
--- /dev/null
+++ b/dev-lang/rust/rust-1.80.1-r100.ebuild
@@ -0,0 +1,767 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 18 )
+PYTHON_COMPAT=( python3_{10..13} )
+
+inherit check-reqs estack flag-o-matic llvm-r1 multiprocessing \
+	multilib multilib-build python-any-r1 rust-toolchain toolchain-funcs verify-sig
+
+if [[ ${PV} = *beta* ]]; then
+	betaver=${PV//*beta}
+	BETA_SNAPSHOT="${betaver:0:4}-${betaver:4:2}-${betaver:6:2}"
+	MY_P="rustc-beta"
+	SRC="${BETA_SNAPSHOT}/rustc-beta-src.tar.xz -> rustc-${PV}-src.tar.xz"
+else
+	MY_P="rustc-${PV}"
+	SRC="${MY_P}-src.tar.xz"
+	KEYWORDS="amd64 arm arm64 ~loong ~mips ppc ppc64 ~riscv sparc x86"
+fi
+
+RUST_STAGE0_VERSION="1.$(($(ver_cut 2) - 1)).0"
+
+DESCRIPTION="Systems programming language from Mozilla"
+HOMEPAGE="https://www.rust-lang.org/"
+
+SRC_URI="
+	https://static.rust-lang.org/dist/${SRC}
+	verify-sig? ( https://static.rust-lang.org/dist/${SRC}.asc )
+	!system-bootstrap? ( $(rust_all_arch_uris rust-${RUST_STAGE0_VERSION}) )
+"
+S="${WORKDIR}/${MY_P}-src"
+
+# keep in sync with llvm ebuild of the same version as bundled one.
+ALL_LLVM_TARGETS=( AArch64 AMDGPU ARC ARM AVR BPF CSKY DirectX Hexagon Lanai
+	LoongArch M68k Mips MSP430 NVPTX PowerPC RISCV Sparc SPIRV SystemZ VE
+	WebAssembly X86 XCore Xtensa )
+ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
+LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/(-)?}
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+
+IUSE="big-endian clippy cpu_flags_x86_sse2 debug dist doc llvm-libunwind lto miri nightly parallel-compiler rustfmt rust-analyzer rust-src system-bootstrap system-llvm test wasm ${ALL_LLVM_TARGETS[*]}"
+
+LLVM_DEPEND=()
+# splitting usedeps needed to avoid CI/pkgcheck's UncheckableDep limitation
+for _x in "${ALL_LLVM_TARGETS[@]}"; do
+	LLVM_DEPEND+=( "	${_x}? ( $(llvm_gen_dep "sys-devel/llvm:\${LLVM_SLOT}[${_x}]") )" )
+done
+LLVM_DEPEND+=( "	wasm? ( $(llvm_gen_dep 'sys-devel/lld:${LLVM_SLOT}') )" )
+LLVM_DEPEND+=( "	$(llvm_gen_dep 'sys-devel/llvm:${LLVM_SLOT}')" )
+
+# to bootstrap we need at least exactly previous version, or same.
+# most of the time previous versions fail to bootstrap with newer
+# for example 1.47.x, requires at least 1.46.x, 1.47.x is ok,
+# but it fails to bootstrap with 1.48.x
+# https://github.com/rust-lang/rust/blob/${PV}/src/stage0.json
+RUST_DEP_PREV="$(ver_cut 1).$(($(ver_cut 2) - 1))*"
+RUST_DEP_CURR="$(ver_cut 1).$(ver_cut 2)*"
+BOOTSTRAP_DEPEND="||
+	(
+		=dev-lang/rust-"${RUST_DEP_PREV}"
+		=dev-lang/rust-bin-"${RUST_DEP_PREV}"
+		=dev-lang/rust-"${RUST_DEP_CURR}"
+		=dev-lang/rust-bin-"${RUST_DEP_CURR}"
+	)
+"
+
+BDEPEND="${PYTHON_DEPS}
+	app-eselect/eselect-rust
+	|| (
+		>=sys-devel/gcc-4.7
+		>=sys-devel/clang-3.5
+	)
+	system-bootstrap? ( ${BOOTSTRAP_DEPEND} )
+	!system-llvm? (
+		>=dev-build/cmake-3.13.4
+		app-alternatives/ninja
+	)
+	test? ( dev-debug/gdb )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+DEPEND="
+	>=app-arch/xz-utils-5.2
+	net-misc/curl:=[http2,ssl]
+	sys-libs/zlib:=
+	dev-libs/openssl:0=
+	system-llvm? (
+		${LLVM_DEPEND[*]}
+		llvm-libunwind? ( sys-libs/llvm-libunwind:= )
+	)
+	!system-llvm? (
+		!llvm-libunwind? (
+			elibc_musl? ( sys-libs/libunwind:= )
+		)
+	)
+"
+
+RDEPEND="${DEPEND}
+	app-eselect/eselect-rust
+	dev-lang/rust-common
+	sys-apps/lsb-release
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+
+REQUIRED_USE="|| ( ${ALL_LLVM_TARGETS[*]} )
+	miri? ( nightly )
+	parallel-compiler? ( nightly )
+	rust-analyzer? ( rust-src )
+	test? ( ${ALL_LLVM_TARGETS[*]} )
+	wasm? ( llvm_targets_WebAssembly )
+	x86? ( cpu_flags_x86_sse2 )
+"
+
+# we don't use cmake.eclass, but can get a warning
+CMAKE_WARN_UNUSED_CLI=no
+
+QA_FLAGS_IGNORED="
+	usr/lib/${PN}/${PV}/bin/.*
+	usr/lib/${PN}/${PV}/libexec/.*
+	usr/lib/${PN}/${PV}/lib/lib.*.so
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_SONAME="
+	usr/lib/${PN}/${PV}/lib/lib.*.so.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_PRESTRIPPED="
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/rust-llvm-dwp
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/self-contained/crtn.o
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="usr/lib/${PN}/${PV}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+# causes double bootstrap
+RESTRICT="test"
+
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/rust.asc
+
+PATCHES=(
+	"${FILESDIR}"/1.78.0-musl-dynamic-linking.patch
+	"${FILESDIR}"/1.74.1-cross-compile-libz.patch
+	#"${FILESDIR}"/1.72.0-bump-libc-deps-to-0.2.146.patch  # pending refresh
+	"${FILESDIR}"/1.67.0-doc-wasm.patch
+	"${FILESDIR}"/1.79.0-revert-8c40426.patch
+)
+
+clear_vendor_checksums() {
+	sed -i 's/\("files":{\)[^}]*/\1/' "vendor/${1}/.cargo-checksum.json" || die
+}
+
+toml_usex() {
+	usex "${1}" true false
+}
+
+bootstrap_rust_version_check() {
+	# never call from pkg_pretend. eselect-rust may be not installed yet.
+	[[ ${MERGE_TYPE} == binary ]] && return
+	local rustc_wanted="$(ver_cut 1).$(($(ver_cut 2) - 1))"
+	local rustc_toonew="$(ver_cut 1).$(($(ver_cut 2) + 1))"
+	local rustc_version=( $(eselect --brief --root="${BROOT}" rust show 2>/dev/null) )
+	rustc_version=${rustc_version[0]#rust-bin-}
+	rustc_version=${rustc_version#rust-}
+
+	[[ -z "${rustc_version}" ]] && die "Failed to determine rust version, check 'eselect rust' output"
+
+	if ver_test "${rustc_version}" -lt "${rustc_wanted}" ; then
+		eerror "Rust >=${rustc_wanted} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too old"
+	elif ver_test "${rustc_version}" -ge "${rustc_toonew}" ; then
+		eerror "Rust <${rustc_toonew} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too new"
+	else
+		einfo "Using rust ${rustc_version} to build"
+	fi
+}
+
+pre_build_checks() {
+	local M=8192
+	# multiply requirements by 1.3 if we are doing x86-multilib
+	if use amd64; then
+		M=$(( $(usex abi_x86_32 13 10) * ${M} / 10 ))
+	fi
+	M=$(( $(usex clippy 128 0) + ${M} ))
+	M=$(( $(usex miri 128 0) + ${M} ))
+	M=$(( $(usex rustfmt 256 0) + ${M} ))
+	# add 2G if we compile llvm and 256M per llvm_target
+	if ! use system-llvm; then
+		M=$(( 2048 + ${M} ))
+		local ltarget
+		for ltarget in ${ALL_LLVM_TARGETS[@]}; do
+			M=$(( $(usex ${ltarget} 256 0) + ${M} ))
+		done
+	fi
+	M=$(( $(usex wasm 256 0) + ${M} ))
+	M=$(( $(usex debug 2 1) * ${M} ))
+	eshopts_push -s extglob
+	if is-flagq '-g?(gdb)?([1-9])'; then
+		M=$(( 15 * ${M} / 10 ))
+	fi
+	eshopts_pop
+	M=$(( $(usex system-bootstrap 0 1024) + ${M} ))
+	M=$(( $(usex doc 256 0) + ${M} ))
+	CHECKREQS_DISK_BUILD=${M}M check-reqs_pkg_${EBUILD_PHASE}
+}
+
+llvm_check_deps() {
+	has_version -r "sys-devel/llvm:${LLVM_SLOT}[${LLVM_TARGET_USEDEPS// /,}]"
+}
+
+# Is LLVM being linked against libc++?
+is_libcxx_linked() {
+	local code='#include <ciso646>
+#if defined(_LIBCPP_VERSION)
+	HAVE_LIBCXX
+#endif
+'
+	local out=$($(tc-getCXX) ${CXXFLAGS} ${CPPFLAGS} -x c++ -E -P - <<<"${code}") || return 1
+	[[ ${out} == *HAVE_LIBCXX* ]]
+}
+
+pkg_pretend() {
+	pre_build_checks
+}
+
+pkg_setup() {
+	pre_build_checks
+	python-any-r1_pkg_setup
+
+	export LIBGIT2_NO_PKG_CONFIG=1 #749381
+	if tc-is-cross-compiler; then
+		export PKG_CONFIG_ALLOW_CROSS=1
+		export PKG_CONFIG_PATH="${ROOT}/usr/$(get_libdir)/pkgconfig"
+		export OPENSSL_INCLUDE_DIR="${ROOT}/usr/include"
+		export OPENSSL_LIB_DIR="${ROOT}/usr/$(get_libdir)"
+
+		use system-bootstrap || die "USE=system-bootstrap is required when cross-compiling"
+		use system-llvm && die "USE=system-llvm not allowed when cross-compiling"
+		local cross_llvm_target="$(llvm_tuple_to_target "${CBUILD}")"
+		use "llvm_targets_${cross_llvm_target}" || \
+			die "Must enable LLVM_TARGETS=${cross_llvm_target} matching CBUILD=${CBUILD} when cross-compiling"
+	fi
+
+	use system-bootstrap && bootstrap_rust_version_check
+
+	if use system-llvm; then
+		llvm-r1_pkg_setup
+
+		local llvm_config="$(get_llvm_prefix)/bin/llvm-config"
+		export LLVM_LINK_SHARED=1
+		export RUSTFLAGS="${RUSTFLAGS} -Lnative=$("${llvm_config}" --libdir)"
+	fi
+}
+
+esetup_unwind_hack() {
+	# https://bugs.gentoo.org/870280
+	# this is a hack needed to bootstrap with libgcc_s linked tarball on llvm-libunwind system.
+	# it should trigger for internal bootstrap or system-bootstrap with rust-bin.
+	# the whole idea is for stage0 to bootstrap with fake libgcc_s.
+	# final stage will receive -L${T}/lib but not -lgcc_s args, producing clean compiler.
+	local fakelib="${T}/fakelib"
+	mkdir -p "${fakelib}" || die
+	# we need both symlinks, one for cargo runtime, other for linker.
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so.1" || die
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so" || die
+	export LD_LIBRARY_PATH="${fakelib}"
+	export RUSTFLAGS+=" -L${fakelib}"
+	# this is a literally magic variable that gets through cargo cache, without it some
+	# crates ignore RUSTFLAGS.
+	# this variable can not contain leading space.
+	export MAGIC_EXTRA_RUSTFLAGS+="${MAGIC_EXTRA_RUSTFLAGS:+ }-L${fakelib}"
+}
+
+src_prepare() {
+	# Clear vendor checksums for crates that we patched to bump libc.
+	# NOTE: refresh this on each bump.
+	#for i in addr2line-0.20.0 bstr cranelift-jit crossbeam-channel elasticlunr-rs handlebars icu_locid libffi \
+	#	terminal_size tracing-tree; do
+	#	clear_vendor_checksums "${i}"
+	#done
+
+	if ! use system-bootstrap; then
+		has_version sys-devel/gcc || esetup_unwind_hack
+		local rust_stage0_root="${WORKDIR}"/rust-stage0
+		local rust_stage0="rust-${RUST_STAGE0_VERSION}-$(rust_abi "${CBUILD}")"
+
+		"${WORKDIR}/${rust_stage0}"/install.sh --disable-ldconfig \
+			--without=rust-docs-json-preview,rust-docs --destdir="${rust_stage0_root}" --prefix=/ || die
+	fi
+
+	default
+}
+
+src_configure() {
+	filter-lto # https://bugs.gentoo.org/862109 https://bugs.gentoo.org/866231
+
+	local rust_target="" rust_targets="" arch_cflags
+
+	# Collect rust target names to compile standard libs for all ABIs.
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_targets+=",\"$(rust_abi $(get_abi_CHOST ${v##*.}))\""
+	done
+	if use wasm; then
+		rust_targets+=",\"wasm32-unknown-unknown\""
+		if use system-llvm; then
+			# un-hardcode rust-lld linker for this target
+			# https://bugs.gentoo.org/715348
+			sed -i '/linker:/ s/rust-lld/wasm-ld/' compiler/rustc_target/src/spec/base/wasm.rs || die
+		fi
+	fi
+	rust_targets="${rust_targets#,}"
+
+	# cargo and rustdoc are mandatory and should always be included
+	local tools='"cargo","rustdoc"'
+	use clippy && tools+=',"clippy"'
+	use miri && tools+=',"miri"'
+	use rustfmt && tools+=',"rustfmt"'
+	use rust-analyzer && tools+=',"rust-analyzer","rust-analyzer-proc-macro-srv"'
+	use rust-src && tools+=',"src"'
+
+	local rust_stage0_root
+	if use system-bootstrap; then
+		local printsysroot
+		printsysroot="$(rustc --print sysroot || die "Can't determine rust's sysroot")"
+		rust_stage0_root="${printsysroot}"
+	else
+		rust_stage0_root="${WORKDIR}"/rust-stage0
+	fi
+	# in case of prefix it will be already prefixed, as --print sysroot returns full path
+	[[ -d ${rust_stage0_root} ]] || die "${rust_stage0_root} is not a directory"
+
+	rust_target="$(rust_abi)"
+	rust_build="$(rust_abi "${CBUILD}")"
+	rust_host="$(rust_abi "${CHOST}")"
+
+	local cm_btype="$(usex debug DEBUG RELEASE)"
+	cat <<- _EOF_ > "${S}"/config.toml
+		[llvm]
+		download-ci-llvm = false
+		optimize = $(toml_usex !debug)
+		release-debuginfo = $(toml_usex debug)
+		assertions = $(toml_usex debug)
+		ninja = true
+		targets = "${LLVM_TARGETS// /;}"
+		experimental-targets = ""
+		link-shared = $(toml_usex system-llvm)
+		$(if is_libcxx_linked; then
+			# https://bugs.gentoo.org/732632
+			echo "use-libcxx = true"
+			echo "static-libstdcpp = false"
+		fi)
+		$(case "${rust_target}" in
+			i586-*-linux-*)
+				# https://github.com/rust-lang/rust/issues/93059
+				echo 'cflags = "-fcf-protection=none"'
+				echo 'cxxflags = "-fcf-protection=none"'
+				echo 'ldflags = "-fcf-protection=none"'
+				;;
+			*)
+				;;
+		esac)
+		enable-warnings = false
+		[llvm.build-config]
+		CMAKE_VERBOSE_MAKEFILE = "ON"
+		$(if ! tc-is-cross-compiler; then
+			# When cross-compiling, LLVM is compiled twice, once for host and
+			# once for target.  Unfortunately, this build configuration applies
+			# to both, which means any flags applicable to one target but not
+			# the other will break.  Conditionally disable respecting user
+			# flags when cross-compiling.
+			echo "CMAKE_C_FLAGS_${cm_btype} = \"${CFLAGS}\""
+			echo "CMAKE_CXX_FLAGS_${cm_btype} = \"${CXXFLAGS}\""
+			echo "CMAKE_EXE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_MODULE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_SHARED_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_STATIC_LINKER_FLAGS_${cm_btype} = \"${ARFLAGS}\""
+		fi)
+		[build]
+		build-stage = 2
+		test-stage = 2
+		build = "${rust_build}"
+		host = ["${rust_host}"]
+		target = [${rust_targets}]
+		cargo = "${rust_stage0_root}/bin/cargo"
+		rustc = "${rust_stage0_root}/bin/rustc"
+		rustfmt = "${rust_stage0_root}/bin/rustfmt"
+		docs = $(toml_usex doc)
+		compiler-docs = false
+		submodules = false
+		python = "${EPYTHON}"
+		locked-deps = true
+		vendor = true
+		extended = true
+		tools = [${tools}]
+		verbose = 2
+		sanitizers = false
+		profiler = true
+		cargo-native-static = false
+		[install]
+		prefix = "${EPREFIX}/usr/lib/${PN}/${PV}"
+		sysconfdir = "etc"
+		docdir = "share/doc/rust"
+		bindir = "bin"
+		libdir = "lib"
+		mandir = "share/man"
+		[rust]
+		# https://github.com/rust-lang/rust/issues/54872
+		codegen-units-std = 1
+		optimize = true
+		debug = $(toml_usex debug)
+		debug-assertions = $(toml_usex debug)
+		debug-assertions-std = $(toml_usex debug)
+		debuginfo-level = $(usex debug 2 0)
+		debuginfo-level-rustc = $(usex debug 2 0)
+		debuginfo-level-std = $(usex debug 2 0)
+		debuginfo-level-tools = $(usex debug 2 0)
+		debuginfo-level-tests = 0
+		backtrace = true
+		incremental = false
+		$(if ! tc-is-cross-compiler; then
+			echo "default-linker = \"$(tc-getCC)\""
+		fi)
+		parallel-compiler = $(toml_usex parallel-compiler)
+		channel = "$(usex nightly nightly stable)"
+		description = "gentoo"
+		rpath = false
+		verbose-tests = true
+		optimize-tests = $(toml_usex !debug)
+		codegen-tests = true
+		dist-src = false
+		remap-debuginfo = true
+		lld = $(usex system-llvm false $(toml_usex wasm))
+		# only deny warnings if doc+wasm are NOT requested, documenting stage0 wasm std fails without it
+		# https://github.com/rust-lang/rust/issues/74976
+		# https://github.com/rust-lang/rust/issues/76526
+		deny-warnings = $(usex wasm $(usex doc false true) true)
+		backtrace-on-ice = true
+		jemalloc = false
+		# See https://github.com/rust-lang/rust/issues/121124
+		lto = "$(usex lto thin off)"
+		[dist]
+		src-tarball = false
+		compression-formats = ["xz"]
+		compression-profile = "balanced"
+	_EOF_
+
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_target=$(rust_abi $(get_abi_CHOST ${v##*.}))
+		arch_cflags="$(get_abi_CFLAGS ${v##*.})"
+
+		export CFLAGS_${rust_target//-/_}="${arch_cflags}"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${rust_target}]
+			ar = "$(tc-getAR)"
+			cc = "$(tc-getCC)"
+			cxx = "$(tc-getCXX)"
+			linker = "$(tc-getCC)"
+			ranlib = "$(tc-getRANLIB)"
+			llvm-libunwind = "$(usex llvm-libunwind $(usex system-llvm system in-tree) no)"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		# by default librustc_target/spec/linux_musl_base.rs sets base.crt_static_default = true;
+		# but we patch it and set to false here as well
+		if use elibc_musl; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				crt-static = false
+				musl-root = "$($(tc-getCC) -print-sysroot)/usr"
+			_EOF_
+		fi
+	done
+	if use wasm; then
+		wasm_target="wasm32-unknown-unknown"
+		export CFLAGS_${wasm_target//-/_}="$(filter-flags '-mcpu*' '-march*' '-mtune*'; echo "$CFLAGS")"
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.wasm32-unknown-unknown]
+			linker = "$(usex system-llvm lld rust-lld)"
+			# wasm target does not have profiler_builtins https://bugs.gentoo.org/848483
+			profiler = false
+		_EOF_
+	fi
+
+	if [[ -n ${I_KNOW_WHAT_I_AM_DOING_CROSS} ]]; then # whitespace intentionally shifted below
+	# experimental cross support
+	# discussion: https://bugs.gentoo.org/679878
+	# TODO: c*flags, clang, system-llvm, cargo.eclass target support
+	# it would be much better if we could split out stdlib
+	# complilation to separate ebuild and abuse CATEGORY to
+	# just install to /usr/lib/rustlib/<target>
+
+	# extra targets defined as a bash array
+	# spec format:  <LLVM target>:<rust-target>:<CTARGET>
+	# best place would be /etc/portage/env/dev-lang/rust
+	# Example:
+	# RUST_CROSS_TARGETS=(
+	#	"AArch64:aarch64-unknown-linux-gnu:aarch64-unknown-linux-gnu"
+	# )
+	# no extra hand holding is done, no target transformations, all
+	# values are passed as-is with just basic checks, so it's up to user to supply correct values
+	# valid rust targets can be obtained with
+	# 	rustc --print target-list
+	# matching cross toolchain has to be installed
+	# matching LLVM_TARGET has to be enabled for both rust and llvm (if using system one)
+	# only gcc toolchains installed with crossdev are checked for now.
+
+	# BUG: we can't pass host flags to cross compiler, so just filter for now
+	# BUG: this should be more fine-grained.
+	filter-flags '-mcpu=*' '-march=*' '-mtune=*'
+
+	local cross_target_spec
+	for cross_target_spec in "${RUST_CROSS_TARGETS[@]}";do
+		# extracts first element form <LLVM target>:<rust-target>:<CTARGET>
+		local cross_llvm_target="${cross_target_spec%%:*}"
+		# extracts toolchain triples, <rust-target>:<CTARGET>
+		local cross_triples="${cross_target_spec#*:}"
+		# extracts first element after before : separator
+		local cross_rust_target="${cross_triples%%:*}"
+		# extracts last element after : separator
+		local cross_toolchain="${cross_triples##*:}"
+		use llvm_targets_${cross_llvm_target} || die "need llvm_targets_${cross_llvm_target} target enabled"
+		command -v ${cross_toolchain}-gcc > /dev/null 2>&1 || die "need ${cross_toolchain} cross toolchain"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${cross_rust_target}]
+			ar = "${cross_toolchain}-ar"
+			cc = "${cross_toolchain}-gcc"
+			cxx = "${cross_toolchain}-g++"
+			linker = "${cross_toolchain}-gcc"
+			ranlib = "${cross_toolchain}-ranlib"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		if [[ "${cross_toolchain}" == *-musl* ]]; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				musl-root = "$(${cross_toolchain}-gcc -print-sysroot)/usr"
+			_EOF_
+		fi
+
+		# append cross target to "normal" target list
+		# example 'target = ["powerpc64le-unknown-linux-gnu"]'
+		# becomes 'target = ["powerpc64le-unknown-linux-gnu","aarch64-unknown-linux-gnu"]'
+
+		rust_targets="${rust_targets},\"${cross_rust_target}\""
+		sed -i "/^target = \[/ s#\[.*\]#\[${rust_targets}\]#" config.toml || die
+
+		ewarn
+		ewarn "Enabled ${cross_rust_target} rust target"
+		ewarn "Using ${cross_toolchain} cross toolchain"
+		ewarn
+		if ! has_version -b 'sys-devel/binutils[multitarget]' ; then
+			ewarn "'sys-devel/binutils[multitarget]' is not installed"
+			ewarn "'strip' will be unable to strip cross libraries"
+			ewarn "cross targets will be installed with full debug information"
+			ewarn "enable 'multitarget' USE flag for binutils to be able to strip object files"
+			ewarn
+			ewarn "Alternatively llvm-strip can be used, it supports stripping any target"
+			ewarn "define STRIP=\"llvm-strip\" to use it (experimental)"
+			ewarn
+		fi
+	done
+	fi # I_KNOW_WHAT_I_AM_DOING_CROSS
+
+	einfo "Rust configured with the following flags:"
+	echo
+	echo RUSTFLAGS="\"${RUSTFLAGS}\""
+	echo RUSTFLAGS_BOOTSTRAP="\"${RUSTFLAGS_BOOTSTRAP}\""
+	echo RUSTFLAGS_NOT_BOOTSTRAP="\"${RUSTFLAGS_NOT_BOOTSTRAP}\""
+	echo MAGIC_EXTRA_RUSTFLAGS="\"${MAGIC_EXTRA_RUSTFLAGS}\""
+	env | grep "CARGO_TARGET_.*_RUSTFLAGS="
+	env | grep "CFLAGS_.*"
+	echo
+	einfo "config.toml contents:"
+	cat "${S}"/config.toml || die
+	echo
+}
+
+src_compile() {
+	RUST_BACKTRACE=1 "${EPYTHON}" ./x.py build -vvv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+}
+
+src_test() {
+	# https://rustc-dev-guide.rust-lang.org/tests/intro.html
+
+	# those are basic and codegen tests.
+	local tests=(
+		codegen
+		codegen-units
+		compile-fail
+		incremental
+		mir-opt
+		pretty
+		run-make
+	)
+
+	# fails if llvm is not built with ALL targets.
+	# and known to fail with system llvm sometimes.
+	use system-llvm || tests+=( assembly )
+
+	# fragile/expensive/less important tests
+	# or tests that require extra builds
+	# TODO: instead of skipping, just make some nonfatal.
+	if [[ ${ERUST_RUN_EXTRA_TESTS:-no} != no ]]; then
+		tests+=(
+			rustdoc
+			rustdoc-js
+			rustdoc-js-std
+			rustdoc-ui
+			run-make-fulldeps
+			ui
+			ui-fulldeps
+		)
+	fi
+
+	local i failed=()
+	einfo "rust_src_test: enabled tests ${tests[@]/#/src/test/}"
+	for i in "${tests[@]}"; do
+		local t="src/test/${i}"
+		einfo "rust_src_test: running ${t}"
+		if ! RUST_BACKTRACE=1 "${EPYTHON}" ./x.py test -vv --config="${S}"/config.toml \
+				-j$(makeopts_jobs) --no-doc --no-fail-fast "${t}"
+		then
+				failed+=( "${t}" )
+				eerror "rust_src_test: ${t} failed"
+		fi
+	done
+
+	if [[ ${#failed[@]} -ne 0 ]]; then
+		eerror "rust_src_test: failure summary: ${failed[@]}"
+		die "aborting due to test failures"
+	fi
+}
+
+src_install() {
+	DESTDIR="${D}" "${EPYTHON}" ./x.py install -vv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+
+	# bug #689562, #689160
+	rm -v "${ED}/usr/lib/${PN}/${PV}/etc/bash_completion.d/cargo" || die
+	rmdir -v "${ED}/usr/lib/${PN}/${PV}"/etc{/bash_completion.d,} || die
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+		rust-demangler
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use miri && symlinks+=( miri cargo-miri )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths: ${symlinks[@]}"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /usr/lib/rust/<ver>/bin/rustc-<ver>
+		# need to fix eselect-rust to remove this hack.
+		local ver_i="${i}-${PV}"
+		if [[ -f "${ED}/usr/lib/${PN}/${PV}/bin/${i}" ]]; then
+			einfo "Installing ${i} symlink"
+			ln -v "${ED}/usr/lib/${PN}/${PV}/bin/${i}" "${ED}/usr/lib/${PN}/${PV}/bin/${ver_i}" || die
+		else
+			ewarn "${i} symlink requested, but source file not found"
+			ewarn "please report this"
+		fi
+		dosym "../lib/${PN}/${PV}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "${PV}/lib" "/usr/lib/${PN}/lib-${PV}"
+	dosym "${PV}/libexec" "/usr/lib/${PN}/libexec-${PV}"
+	dosym "${PV}/share/man" "/usr/lib/${PN}/man-${PV}"
+	dosym "rust/${PV}/lib/rustlib" "/usr/lib/rustlib-${PV}"
+	dosym "../../lib/${PN}/${PV}/share/doc/rust" "/usr/share/doc/${P}"
+
+	newenvd - "50${P}" <<-_EOF_
+		LDPATH="${EPREFIX}/usr/lib/rust/lib-${PV}"
+		MANPATH="${EPREFIX}/usr/lib/rust/man-${PV}"
+	_EOF_
+
+	rm -rf "${ED}/usr/lib/${PN}/${PV}"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/bin"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/doc"/*.old || die
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+		/usr/bin/cargo
+		/usr/bin/rustdoc
+		/usr/bin/rust-demangler
+		/usr/bin/rust-gdb
+		/usr/bin/rust-gdbgui
+		/usr/bin/rust-lldb
+		/usr/lib/rustlib
+		/usr/lib/rust/lib
+		/usr/lib/rust/libexec
+		/usr/lib/rust/man
+		/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use miri; then
+		echo /usr/bin/miri >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-miri >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+
+	if use dist; then
+		"${EPYTHON}" ./x.py dist -vv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+		insinto "/usr/lib/${PN}/${PV}/dist"
+		doins -r "${S}/build/dist/."
+	fi
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	if has_version dev-debug/gdb || has_version dev-debug/lldb; then
+		elog "Rust installs a helper script for calling GDB and LLDB,"
+		elog "for your convenience it is installed under /usr/bin/rust-{gdb,lldb}-${PV}."
+	fi
+
+	if has_version app-editors/emacs; then
+		elog "install app-emacs/rust-mode to get emacs support for rust."
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		elog "install app-vim/rust-vim to get vim support for rust."
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust/rust-1.81.0-r100.ebuild b/dev-lang/rust/rust-1.81.0-r100.ebuild
new file mode 100644
index 000000000000..a6316b4e46fb
--- /dev/null
+++ b/dev-lang/rust/rust-1.81.0-r100.ebuild
@@ -0,0 +1,768 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 18 )
+PYTHON_COMPAT=( python3_{10..13} )
+
+inherit check-reqs estack flag-o-matic llvm-r1 multiprocessing optfeature \
+	multilib multilib-build python-any-r1 rust-toolchain toolchain-funcs verify-sig
+
+if [[ ${PV} = *beta* ]]; then
+	betaver=${PV//*beta}
+	BETA_SNAPSHOT="${betaver:0:4}-${betaver:4:2}-${betaver:6:2}"
+	MY_P="rustc-beta"
+	SRC="${BETA_SNAPSHOT}/rustc-beta-src.tar.xz -> rustc-${PV}-src.tar.xz"
+else
+	MY_P="rustc-${PV}"
+	SRC="${MY_P}-src.tar.xz"
+	KEYWORDS="amd64 arm arm64 ~loong ~mips ppc ppc64 ~riscv sparc x86"
+fi
+
+RUST_STAGE0_VERSION="1.$(($(ver_cut 2) - 1)).1"
+
+DESCRIPTION="Systems programming language from Mozilla"
+HOMEPAGE="https://www.rust-lang.org/"
+
+SRC_URI="
+	https://static.rust-lang.org/dist/${SRC}
+	verify-sig? ( https://static.rust-lang.org/dist/${SRC}.asc )
+	!system-bootstrap? ( $(rust_all_arch_uris rust-${RUST_STAGE0_VERSION}) )
+"
+S="${WORKDIR}/${MY_P}-src"
+
+# keep in sync with llvm ebuild of the same version as bundled one.
+ALL_LLVM_TARGETS=( AArch64 AMDGPU ARC ARM AVR BPF CSKY DirectX Hexagon Lanai
+	LoongArch M68k Mips MSP430 NVPTX PowerPC RISCV Sparc SPIRV SystemZ VE
+	WebAssembly X86 XCore Xtensa )
+ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
+LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/(-)?}
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+
+IUSE="big-endian clippy cpu_flags_x86_sse2 debug dist doc llvm-libunwind lto miri nightly parallel-compiler rustfmt rust-analyzer rust-src system-bootstrap system-llvm test wasm ${ALL_LLVM_TARGETS[*]}"
+
+LLVM_DEPEND=()
+# splitting usedeps needed to avoid CI/pkgcheck's UncheckableDep limitation
+for _x in "${ALL_LLVM_TARGETS[@]}"; do
+	LLVM_DEPEND+=( "	${_x}? ( $(llvm_gen_dep "sys-devel/llvm:\${LLVM_SLOT}[${_x}]") )" )
+done
+LLVM_DEPEND+=( "	wasm? ( $(llvm_gen_dep 'sys-devel/lld:${LLVM_SLOT}') )" )
+LLVM_DEPEND+=( "	$(llvm_gen_dep 'sys-devel/llvm:${LLVM_SLOT}')" )
+
+# to bootstrap we need at least exactly previous version, or same.
+# most of the time previous versions fail to bootstrap with newer
+# for example 1.47.x, requires at least 1.46.x, 1.47.x is ok,
+# but it fails to bootstrap with 1.48.x
+# https://github.com/rust-lang/rust/blob/${PV}/src/stage0.json
+RUST_DEP_PREV="$(ver_cut 1).$(($(ver_cut 2) - 1))*"
+RUST_DEP_CURR="$(ver_cut 1).$(ver_cut 2)*"
+BOOTSTRAP_DEPEND="||
+	(
+		=dev-lang/rust-"${RUST_DEP_PREV}"
+		=dev-lang/rust-bin-"${RUST_DEP_PREV}"
+		=dev-lang/rust-"${RUST_DEP_CURR}"
+		=dev-lang/rust-bin-"${RUST_DEP_CURR}"
+	)
+"
+
+BDEPEND="${PYTHON_DEPS}
+	app-eselect/eselect-rust
+	|| (
+		>=sys-devel/gcc-4.7
+		>=sys-devel/clang-3.5
+	)
+	system-bootstrap? ( ${BOOTSTRAP_DEPEND} )
+	!system-llvm? (
+		>=dev-build/cmake-3.13.4
+		app-alternatives/ninja
+	)
+	test? ( dev-debug/gdb )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+DEPEND="
+	>=app-arch/xz-utils-5.2
+	net-misc/curl:=[http2,ssl]
+	sys-libs/zlib:=
+	dev-libs/openssl:0=
+	system-llvm? (
+		${LLVM_DEPEND[*]}
+		llvm-libunwind? ( sys-libs/llvm-libunwind:= )
+	)
+	!system-llvm? (
+		!llvm-libunwind? (
+			elibc_musl? ( sys-libs/libunwind:= )
+		)
+	)
+"
+
+RDEPEND="${DEPEND}
+	app-eselect/eselect-rust
+	dev-lang/rust-common
+	sys-apps/lsb-release
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+
+REQUIRED_USE="|| ( ${ALL_LLVM_TARGETS[*]} )
+	miri? ( nightly )
+	parallel-compiler? ( nightly )
+	rust-analyzer? ( rust-src )
+	test? ( ${ALL_LLVM_TARGETS[*]} )
+	wasm? ( llvm_targets_WebAssembly )
+	x86? ( cpu_flags_x86_sse2 )
+"
+
+# we don't use cmake.eclass, but can get a warning
+CMAKE_WARN_UNUSED_CLI=no
+
+QA_FLAGS_IGNORED="
+	usr/lib/${PN}/${PV}/bin/.*
+	usr/lib/${PN}/${PV}/libexec/.*
+	usr/lib/${PN}/${PV}/lib/lib.*.so
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_SONAME="
+	usr/lib/${PN}/${PV}/lib/lib.*.so.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_PRESTRIPPED="
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/rust-llvm-dwp
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/self-contained/crtn.o
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="usr/lib/${PN}/${PV}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+# causes double bootstrap
+RESTRICT="test"
+
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/rust.asc
+
+PATCHES=(
+	"${FILESDIR}"/1.78.0-musl-dynamic-linking.patch
+	"${FILESDIR}"/1.74.1-cross-compile-libz.patch
+	#"${FILESDIR}"/1.72.0-bump-libc-deps-to-0.2.146.patch  # pending refresh
+	"${FILESDIR}"/1.67.0-doc-wasm.patch
+	"${FILESDIR}"/1.79.0-revert-8c40426.patch
+	"${FILESDIR}/1.81.0-backport-bug937164.patch"
+	"${FILESDIR}/1.81.0-backport-llvm-pr101761.patch"
+	"${FILESDIR}/1.81.0-backport-llvm-pr101766.patch"
+)
+
+clear_vendor_checksums() {
+	sed -i 's/\("files":{\)[^}]*/\1/' "vendor/${1}/.cargo-checksum.json" || die
+}
+
+toml_usex() {
+	usex "${1}" true false
+}
+
+bootstrap_rust_version_check() {
+	# never call from pkg_pretend. eselect-rust may be not installed yet.
+	[[ ${MERGE_TYPE} == binary ]] && return
+	local rustc_wanted="$(ver_cut 1).$(($(ver_cut 2) - 1))"
+	local rustc_toonew="$(ver_cut 1).$(($(ver_cut 2) + 1))"
+	local rustc_version=( $(eselect --brief --root="${BROOT}" rust show 2>/dev/null) )
+	rustc_version=${rustc_version[0]#rust-bin-}
+	rustc_version=${rustc_version#rust-}
+
+	[[ -z "${rustc_version}" ]] && die "Failed to determine rust version, check 'eselect rust' output"
+
+	if ver_test "${rustc_version}" -lt "${rustc_wanted}" ; then
+		eerror "Rust >=${rustc_wanted} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too old"
+	elif ver_test "${rustc_version}" -ge "${rustc_toonew}" ; then
+		eerror "Rust <${rustc_toonew} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too new"
+	else
+		einfo "Using rust ${rustc_version} to build"
+	fi
+}
+
+pre_build_checks() {
+	local M=8192
+	# multiply requirements by 1.3 if we are doing x86-multilib
+	if use amd64; then
+		M=$(( $(usex abi_x86_32 13 10) * ${M} / 10 ))
+	fi
+	M=$(( $(usex clippy 128 0) + ${M} ))
+	M=$(( $(usex miri 128 0) + ${M} ))
+	M=$(( $(usex rustfmt 256 0) + ${M} ))
+	# add 2G if we compile llvm and 256M per llvm_target
+	if ! use system-llvm; then
+		M=$(( 2048 + ${M} ))
+		local ltarget
+		for ltarget in ${ALL_LLVM_TARGETS[@]}; do
+			M=$(( $(usex ${ltarget} 256 0) + ${M} ))
+		done
+	fi
+	M=$(( $(usex wasm 256 0) + ${M} ))
+	M=$(( $(usex debug 2 1) * ${M} ))
+	eshopts_push -s extglob
+	if is-flagq '-g?(gdb)?([1-9])'; then
+		M=$(( 15 * ${M} / 10 ))
+	fi
+	eshopts_pop
+	M=$(( $(usex system-bootstrap 0 1024) + ${M} ))
+	M=$(( $(usex doc 256 0) + ${M} ))
+	CHECKREQS_DISK_BUILD=${M}M check-reqs_pkg_${EBUILD_PHASE}
+}
+
+llvm_check_deps() {
+	has_version -r "sys-devel/llvm:${LLVM_SLOT}[${LLVM_TARGET_USEDEPS// /,}]"
+}
+
+# Is LLVM being linked against libc++?
+is_libcxx_linked() {
+	local code='#include <ciso646>
+#if defined(_LIBCPP_VERSION)
+	HAVE_LIBCXX
+#endif
+'
+	local out=$($(tc-getCXX) ${CXXFLAGS} ${CPPFLAGS} -x c++ -E -P - <<<"${code}") || return 1
+	[[ ${out} == *HAVE_LIBCXX* ]]
+}
+
+pkg_pretend() {
+	pre_build_checks
+}
+
+pkg_setup() {
+	pre_build_checks
+	python-any-r1_pkg_setup
+
+	export LIBGIT2_NO_PKG_CONFIG=1 #749381
+	if tc-is-cross-compiler; then
+		export PKG_CONFIG_ALLOW_CROSS=1
+		export PKG_CONFIG_PATH="${ROOT}/usr/$(get_libdir)/pkgconfig"
+		export OPENSSL_INCLUDE_DIR="${ROOT}/usr/include"
+		export OPENSSL_LIB_DIR="${ROOT}/usr/$(get_libdir)"
+
+		use system-bootstrap || die "USE=system-bootstrap is required when cross-compiling"
+		use system-llvm && die "USE=system-llvm not allowed when cross-compiling"
+		local cross_llvm_target="$(llvm_tuple_to_target "${CBUILD}")"
+		use "llvm_targets_${cross_llvm_target}" || \
+			die "Must enable LLVM_TARGETS=${cross_llvm_target} matching CBUILD=${CBUILD} when cross-compiling"
+	fi
+
+	use system-bootstrap && bootstrap_rust_version_check
+
+	if use system-llvm; then
+		llvm-r1_pkg_setup
+
+		local llvm_config="$(get_llvm_prefix)/bin/llvm-config"
+		export LLVM_LINK_SHARED=1
+		export RUSTFLAGS="${RUSTFLAGS} -Lnative=$("${llvm_config}" --libdir)"
+	fi
+}
+
+esetup_unwind_hack() {
+	# https://bugs.gentoo.org/870280
+	# this is a hack needed to bootstrap with libgcc_s linked tarball on llvm-libunwind system.
+	# it should trigger for internal bootstrap or system-bootstrap with rust-bin.
+	# the whole idea is for stage0 to bootstrap with fake libgcc_s.
+	# final stage will receive -L${T}/lib but not -lgcc_s args, producing clean compiler.
+	local fakelib="${T}/fakelib"
+	mkdir -p "${fakelib}" || die
+	# we need both symlinks, one for cargo runtime, other for linker.
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so.1" || die
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so" || die
+	export LD_LIBRARY_PATH="${fakelib}"
+	export RUSTFLAGS+=" -L${fakelib}"
+	# this is a literally magic variable that gets through cargo cache, without it some
+	# crates ignore RUSTFLAGS.
+	# this variable can not contain leading space.
+	export MAGIC_EXTRA_RUSTFLAGS+="${MAGIC_EXTRA_RUSTFLAGS:+ }-L${fakelib}"
+}
+
+src_prepare() {
+	# Clear vendor checksums for crates that we patched to bump libc.
+	# NOTE: refresh this on each bump.
+	#for i in addr2line-0.20.0 bstr cranelift-jit crossbeam-channel elasticlunr-rs handlebars icu_locid libffi \
+	#	terminal_size tracing-tree; do
+	#	clear_vendor_checksums "${i}"
+	#done
+
+	if ! use system-bootstrap; then
+		has_version sys-devel/gcc || esetup_unwind_hack
+		local rust_stage0_root="${WORKDIR}"/rust-stage0
+		local rust_stage0="rust-${RUST_STAGE0_VERSION}-$(rust_abi "${CBUILD}")"
+
+		"${WORKDIR}/${rust_stage0}"/install.sh --disable-ldconfig \
+			--without=rust-docs-json-preview,rust-docs --destdir="${rust_stage0_root}" --prefix=/ || die
+	fi
+
+	default
+}
+
+src_configure() {
+	filter-lto # https://bugs.gentoo.org/862109 https://bugs.gentoo.org/866231
+
+	local rust_target="" rust_targets="" arch_cflags
+
+	# Collect rust target names to compile standard libs for all ABIs.
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_targets+=",\"$(rust_abi $(get_abi_CHOST ${v##*.}))\""
+	done
+	if use wasm; then
+		rust_targets+=",\"wasm32-unknown-unknown\""
+		if use system-llvm; then
+			# un-hardcode rust-lld linker for this target
+			# https://bugs.gentoo.org/715348
+			sed -i '/linker:/ s/rust-lld/wasm-ld/' compiler/rustc_target/src/spec/base/wasm.rs || die
+		fi
+	fi
+	rust_targets="${rust_targets#,}"
+
+	# cargo and rustdoc are mandatory and should always be included
+	local tools='"cargo","rustdoc"'
+	use clippy && tools+=',"clippy"'
+	use miri && tools+=',"miri"'
+	use rustfmt && tools+=',"rustfmt"'
+	use rust-analyzer && tools+=',"rust-analyzer","rust-analyzer-proc-macro-srv"'
+	use rust-src && tools+=',"src"'
+
+	local rust_stage0_root
+	if use system-bootstrap; then
+		local printsysroot
+		printsysroot="$(rustc --print sysroot || die "Can't determine rust's sysroot")"
+		rust_stage0_root="${printsysroot}"
+	else
+		rust_stage0_root="${WORKDIR}"/rust-stage0
+	fi
+	# in case of prefix it will be already prefixed, as --print sysroot returns full path
+	[[ -d ${rust_stage0_root} ]] || die "${rust_stage0_root} is not a directory"
+
+	rust_target="$(rust_abi)"
+	rust_build="$(rust_abi "${CBUILD}")"
+	rust_host="$(rust_abi "${CHOST}")"
+
+	local cm_btype="$(usex debug DEBUG RELEASE)"
+	cat <<- _EOF_ > "${S}"/config.toml
+		[llvm]
+		download-ci-llvm = false
+		optimize = $(toml_usex !debug)
+		release-debuginfo = $(toml_usex debug)
+		assertions = $(toml_usex debug)
+		ninja = true
+		targets = "${LLVM_TARGETS// /;}"
+		experimental-targets = ""
+		link-shared = $(toml_usex system-llvm)
+		$(if is_libcxx_linked; then
+			# https://bugs.gentoo.org/732632
+			echo "use-libcxx = true"
+			echo "static-libstdcpp = false"
+		fi)
+		$(case "${rust_target}" in
+			i586-*-linux-*)
+				# https://github.com/rust-lang/rust/issues/93059
+				echo 'cflags = "-fcf-protection=none"'
+				echo 'cxxflags = "-fcf-protection=none"'
+				echo 'ldflags = "-fcf-protection=none"'
+				;;
+			*)
+				;;
+		esac)
+		enable-warnings = false
+		[llvm.build-config]
+		CMAKE_VERBOSE_MAKEFILE = "ON"
+		$(if ! tc-is-cross-compiler; then
+			# When cross-compiling, LLVM is compiled twice, once for host and
+			# once for target.  Unfortunately, this build configuration applies
+			# to both, which means any flags applicable to one target but not
+			# the other will break.  Conditionally disable respecting user
+			# flags when cross-compiling.
+			echo "CMAKE_C_FLAGS_${cm_btype} = \"${CFLAGS}\""
+			echo "CMAKE_CXX_FLAGS_${cm_btype} = \"${CXXFLAGS}\""
+			echo "CMAKE_EXE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_MODULE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_SHARED_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_STATIC_LINKER_FLAGS_${cm_btype} = \"${ARFLAGS}\""
+		fi)
+		[build]
+		build-stage = 2
+		test-stage = 2
+		build = "${rust_build}"
+		host = ["${rust_host}"]
+		target = [${rust_targets}]
+		cargo = "${rust_stage0_root}/bin/cargo"
+		rustc = "${rust_stage0_root}/bin/rustc"
+		rustfmt = "${rust_stage0_root}/bin/rustfmt"
+		docs = $(toml_usex doc)
+		compiler-docs = false
+		submodules = false
+		python = "${EPYTHON}"
+		locked-deps = true
+		vendor = true
+		extended = true
+		tools = [${tools}]
+		verbose = 2
+		sanitizers = false
+		profiler = true
+		cargo-native-static = false
+		[install]
+		prefix = "${EPREFIX}/usr/lib/${PN}/${PV}"
+		sysconfdir = "etc"
+		docdir = "share/doc/rust"
+		bindir = "bin"
+		libdir = "lib"
+		mandir = "share/man"
+		[rust]
+		# https://github.com/rust-lang/rust/issues/54872
+		codegen-units-std = 1
+		optimize = true
+		debug = $(toml_usex debug)
+		debug-assertions = $(toml_usex debug)
+		debug-assertions-std = $(toml_usex debug)
+		debuginfo-level = $(usex debug 2 0)
+		debuginfo-level-rustc = $(usex debug 2 0)
+		debuginfo-level-std = $(usex debug 2 0)
+		debuginfo-level-tools = $(usex debug 2 0)
+		debuginfo-level-tests = 0
+		backtrace = true
+		incremental = false
+		$(if ! tc-is-cross-compiler; then
+			echo "default-linker = \"$(tc-getCC)\""
+		fi)
+		parallel-compiler = $(toml_usex parallel-compiler)
+		channel = "$(usex nightly nightly stable)"
+		description = "gentoo"
+		rpath = false
+		verbose-tests = true
+		optimize-tests = $(toml_usex !debug)
+		codegen-tests = true
+		dist-src = false
+		remap-debuginfo = true
+		lld = $(usex system-llvm false $(toml_usex wasm))
+		# only deny warnings if doc+wasm are NOT requested, documenting stage0 wasm std fails without it
+		# https://github.com/rust-lang/rust/issues/74976
+		# https://github.com/rust-lang/rust/issues/76526
+		deny-warnings = $(usex wasm $(usex doc false true) true)
+		backtrace-on-ice = true
+		jemalloc = false
+		# See https://github.com/rust-lang/rust/issues/121124
+		lto = "$(usex lto thin off)"
+		[dist]
+		src-tarball = false
+		compression-formats = ["xz"]
+		compression-profile = "balanced"
+	_EOF_
+
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_target=$(rust_abi $(get_abi_CHOST ${v##*.}))
+		arch_cflags="$(get_abi_CFLAGS ${v##*.})"
+
+		export CFLAGS_${rust_target//-/_}="${arch_cflags}"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${rust_target}]
+			ar = "$(tc-getAR)"
+			cc = "$(tc-getCC)"
+			cxx = "$(tc-getCXX)"
+			linker = "$(tc-getCC)"
+			ranlib = "$(tc-getRANLIB)"
+			llvm-libunwind = "$(usex llvm-libunwind $(usex system-llvm system in-tree) no)"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		# by default librustc_target/spec/linux_musl_base.rs sets base.crt_static_default = true;
+		# but we patch it and set to false here as well
+		if use elibc_musl; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				crt-static = false
+				musl-root = "$($(tc-getCC) -print-sysroot)/usr"
+			_EOF_
+		fi
+	done
+	if use wasm; then
+		wasm_target="wasm32-unknown-unknown"
+		export CFLAGS_${wasm_target//-/_}="$(filter-flags '-mcpu*' '-march*' '-mtune*'; echo "$CFLAGS")"
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.wasm32-unknown-unknown]
+			linker = "$(usex system-llvm lld rust-lld)"
+			# wasm target does not have profiler_builtins https://bugs.gentoo.org/848483
+			profiler = false
+		_EOF_
+	fi
+
+	if [[ -n ${I_KNOW_WHAT_I_AM_DOING_CROSS} ]]; then # whitespace intentionally shifted below
+	# experimental cross support
+	# discussion: https://bugs.gentoo.org/679878
+	# TODO: c*flags, clang, system-llvm, cargo.eclass target support
+	# it would be much better if we could split out stdlib
+	# complilation to separate ebuild and abuse CATEGORY to
+	# just install to /usr/lib/rustlib/<target>
+
+	# extra targets defined as a bash array
+	# spec format:  <LLVM target>:<rust-target>:<CTARGET>
+	# best place would be /etc/portage/env/dev-lang/rust
+	# Example:
+	# RUST_CROSS_TARGETS=(
+	#	"AArch64:aarch64-unknown-linux-gnu:aarch64-unknown-linux-gnu"
+	# )
+	# no extra hand holding is done, no target transformations, all
+	# values are passed as-is with just basic checks, so it's up to user to supply correct values
+	# valid rust targets can be obtained with
+	# 	rustc --print target-list
+	# matching cross toolchain has to be installed
+	# matching LLVM_TARGET has to be enabled for both rust and llvm (if using system one)
+	# only gcc toolchains installed with crossdev are checked for now.
+
+	# BUG: we can't pass host flags to cross compiler, so just filter for now
+	# BUG: this should be more fine-grained.
+	filter-flags '-mcpu=*' '-march=*' '-mtune=*'
+
+	local cross_target_spec
+	for cross_target_spec in "${RUST_CROSS_TARGETS[@]}";do
+		# extracts first element form <LLVM target>:<rust-target>:<CTARGET>
+		local cross_llvm_target="${cross_target_spec%%:*}"
+		# extracts toolchain triples, <rust-target>:<CTARGET>
+		local cross_triples="${cross_target_spec#*:}"
+		# extracts first element after before : separator
+		local cross_rust_target="${cross_triples%%:*}"
+		# extracts last element after : separator
+		local cross_toolchain="${cross_triples##*:}"
+		use llvm_targets_${cross_llvm_target} || die "need llvm_targets_${cross_llvm_target} target enabled"
+		command -v ${cross_toolchain}-gcc > /dev/null 2>&1 || die "need ${cross_toolchain} cross toolchain"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${cross_rust_target}]
+			ar = "${cross_toolchain}-ar"
+			cc = "${cross_toolchain}-gcc"
+			cxx = "${cross_toolchain}-g++"
+			linker = "${cross_toolchain}-gcc"
+			ranlib = "${cross_toolchain}-ranlib"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		if [[ "${cross_toolchain}" == *-musl* ]]; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				musl-root = "$(${cross_toolchain}-gcc -print-sysroot)/usr"
+			_EOF_
+		fi
+
+		# append cross target to "normal" target list
+		# example 'target = ["powerpc64le-unknown-linux-gnu"]'
+		# becomes 'target = ["powerpc64le-unknown-linux-gnu","aarch64-unknown-linux-gnu"]'
+
+		rust_targets="${rust_targets},\"${cross_rust_target}\""
+		sed -i "/^target = \[/ s#\[.*\]#\[${rust_targets}\]#" config.toml || die
+
+		ewarn
+		ewarn "Enabled ${cross_rust_target} rust target"
+		ewarn "Using ${cross_toolchain} cross toolchain"
+		ewarn
+		if ! has_version -b 'sys-devel/binutils[multitarget]' ; then
+			ewarn "'sys-devel/binutils[multitarget]' is not installed"
+			ewarn "'strip' will be unable to strip cross libraries"
+			ewarn "cross targets will be installed with full debug information"
+			ewarn "enable 'multitarget' USE flag for binutils to be able to strip object files"
+			ewarn
+			ewarn "Alternatively llvm-strip can be used, it supports stripping any target"
+			ewarn "define STRIP=\"llvm-strip\" to use it (experimental)"
+			ewarn
+		fi
+	done
+	fi # I_KNOW_WHAT_I_AM_DOING_CROSS
+
+	einfo "Rust configured with the following flags:"
+	echo
+	echo RUSTFLAGS="\"${RUSTFLAGS}\""
+	echo RUSTFLAGS_BOOTSTRAP="\"${RUSTFLAGS_BOOTSTRAP}\""
+	echo RUSTFLAGS_NOT_BOOTSTRAP="\"${RUSTFLAGS_NOT_BOOTSTRAP}\""
+	echo MAGIC_EXTRA_RUSTFLAGS="\"${MAGIC_EXTRA_RUSTFLAGS}\""
+	env | grep "CARGO_TARGET_.*_RUSTFLAGS="
+	env | grep "CFLAGS_.*"
+	echo
+	einfo "config.toml contents:"
+	cat "${S}"/config.toml || die
+	echo
+}
+
+src_compile() {
+	RUST_BACKTRACE=1 "${EPYTHON}" ./x.py build -vvv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+}
+
+src_test() {
+	# https://rustc-dev-guide.rust-lang.org/tests/intro.html
+
+	# those are basic and codegen tests.
+	local tests=(
+		codegen
+		codegen-units
+		compile-fail
+		incremental
+		mir-opt
+		pretty
+		run-make
+	)
+
+	# fails if llvm is not built with ALL targets.
+	# and known to fail with system llvm sometimes.
+	use system-llvm || tests+=( assembly )
+
+	# fragile/expensive/less important tests
+	# or tests that require extra builds
+	# TODO: instead of skipping, just make some nonfatal.
+	if [[ ${ERUST_RUN_EXTRA_TESTS:-no} != no ]]; then
+		tests+=(
+			rustdoc
+			rustdoc-js
+			rustdoc-js-std
+			rustdoc-ui
+			run-make-fulldeps
+			ui
+			ui-fulldeps
+		)
+	fi
+
+	local i failed=()
+	einfo "rust_src_test: enabled tests ${tests[@]/#/src/test/}"
+	for i in "${tests[@]}"; do
+		local t="src/test/${i}"
+		einfo "rust_src_test: running ${t}"
+		if ! RUST_BACKTRACE=1 "${EPYTHON}" ./x.py test -vv --config="${S}"/config.toml \
+				-j$(makeopts_jobs) --no-doc --no-fail-fast "${t}"
+		then
+				failed+=( "${t}" )
+				eerror "rust_src_test: ${t} failed"
+		fi
+	done
+
+	if [[ ${#failed[@]} -ne 0 ]]; then
+		eerror "rust_src_test: failure summary: ${failed[@]}"
+		die "aborting due to test failures"
+	fi
+}
+
+src_install() {
+	DESTDIR="${D}" "${EPYTHON}" ./x.py install -vv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+
+	# bug #689562, #689160
+	rm -v "${ED}/usr/lib/${PN}/${PV}/etc/bash_completion.d/cargo" || die
+	rmdir -v "${ED}/usr/lib/${PN}/${PV}"/etc{/bash_completion.d,} || die
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use miri && symlinks+=( miri cargo-miri )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths: ${symlinks[@]}"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /usr/lib/rust/<ver>/bin/rustc-<ver>
+		# need to fix eselect-rust to remove this hack.
+		local ver_i="${i}-${PV}"
+		if [[ -f "${ED}/usr/lib/${PN}/${PV}/bin/${i}" ]]; then
+			einfo "Installing ${i} symlink"
+			ln -v "${ED}/usr/lib/${PN}/${PV}/bin/${i}" "${ED}/usr/lib/${PN}/${PV}/bin/${ver_i}" || die
+		else
+			ewarn "${i} symlink requested, but source file not found"
+			ewarn "please report this"
+		fi
+		dosym "../lib/${PN}/${PV}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "${PV}/lib" "/usr/lib/${PN}/lib-${PV}"
+	dosym "${PV}/libexec" "/usr/lib/${PN}/libexec-${PV}"
+	dosym "${PV}/share/man" "/usr/lib/${PN}/man-${PV}"
+	dosym "rust/${PV}/lib/rustlib" "/usr/lib/rustlib-${PV}"
+	dosym "../../lib/${PN}/${PV}/share/doc/rust" "/usr/share/doc/${P}"
+
+	newenvd - "50${P}" <<-_EOF_
+		LDPATH="${EPREFIX}/usr/lib/rust/lib-${PV}"
+		MANPATH="${EPREFIX}/usr/lib/rust/man-${PV}"
+	_EOF_
+
+	rm -rf "${ED}/usr/lib/${PN}/${PV}"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/bin"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/doc"/*.old || die
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+		/usr/bin/cargo
+		/usr/bin/rustdoc
+		/usr/bin/rust-gdb
+		/usr/bin/rust-gdbgui
+		/usr/bin/rust-lldb
+		/usr/lib/rustlib
+		/usr/lib/rust/lib
+		/usr/lib/rust/libexec
+		/usr/lib/rust/man
+		/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use miri; then
+		echo /usr/bin/miri >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-miri >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+
+	if use dist; then
+		"${EPYTHON}" ./x.py dist -vv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+		insinto "/usr/lib/${PN}/${PV}/dist"
+		doins -r "${S}/build/dist/."
+	fi
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	if has_version dev-debug/gdb || has_version dev-debug/lldb; then
+		elog "Rust installs a helper script for calling GDB and LLDB,"
+		elog "for your convenience it is installed under /usr/bin/rust-{gdb,lldb}-${PV}."
+	fi
+
+	if has_version app-editors/emacs; then
+		optfeature "emacs support for rust" app-emacs/rust-mode
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		optfeature "vim support for rust" app-vim/rust-vim
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/rust/rust-1.82.0-r100.ebuild b/dev-lang/rust/rust-1.82.0-r100.ebuild
new file mode 100644
index 000000000000..6cba749daef5
--- /dev/null
+++ b/dev-lang/rust/rust-1.82.0-r100.ebuild
@@ -0,0 +1,775 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+LLVM_COMPAT=( 19 )
+PYTHON_COMPAT=( python3_{10..13} )
+
+inherit check-reqs estack flag-o-matic llvm-r1 multiprocessing optfeature \
+	multilib multilib-build python-any-r1 rust-toolchain toolchain-funcs verify-sig
+
+if [[ ${PV} = *beta* ]]; then
+	betaver=${PV//*beta}
+	BETA_SNAPSHOT="${betaver:0:4}-${betaver:4:2}-${betaver:6:2}"
+	MY_P="rustc-beta"
+	SRC="${BETA_SNAPSHOT}/rustc-beta-src.tar.xz -> rustc-${PV}-src.tar.xz"
+else
+	MY_P="rustc-${PV}"
+	SRC="${MY_P}-src.tar.xz"
+	KEYWORDS="~amd64 ~arm ~arm64 ~loong ~mips ~ppc ~ppc64 ~riscv ~sparc ~x86"
+fi
+
+RUST_STAGE0_VERSION="1.$(($(ver_cut 2) - 1)).0"
+
+DESCRIPTION="Systems programming language from Mozilla"
+HOMEPAGE="https://www.rust-lang.org/"
+
+SRC_URI="
+	https://static.rust-lang.org/dist/${SRC}
+	verify-sig? ( https://static.rust-lang.org/dist/${SRC}.asc )
+	!system-bootstrap? ( $(rust_all_arch_uris rust-${RUST_STAGE0_VERSION}) )
+"
+S="${WORKDIR}/${MY_P}-src"
+
+# keep in sync with llvm ebuild of the same version as bundled one.
+ALL_LLVM_TARGETS=( AArch64 AMDGPU ARC ARM AVR BPF CSKY DirectX Hexagon Lanai
+	LoongArch M68k Mips MSP430 NVPTX PowerPC RISCV Sparc SPIRV SystemZ VE
+	WebAssembly X86 XCore Xtensa )
+ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
+LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/(-)?}
+
+LICENSE="|| ( MIT Apache-2.0 ) BSD BSD-1 BSD-2 BSD-4"
+SLOT="${PV}"
+
+IUSE="big-endian clippy cpu_flags_x86_sse2 debug dist doc llvm-libunwind lto miri nightly parallel-compiler rustfmt rust-analyzer rust-src system-bootstrap system-llvm test wasm ${ALL_LLVM_TARGETS[*]}"
+
+LLVM_DEPEND=()
+# splitting usedeps needed to avoid CI/pkgcheck's UncheckableDep limitation
+for _x in "${ALL_LLVM_TARGETS[@]}"; do
+	LLVM_DEPEND+=( "	${_x}? ( $(llvm_gen_dep "sys-devel/llvm:\${LLVM_SLOT}[${_x}]") )" )
+done
+LLVM_DEPEND+=( "	wasm? ( $(llvm_gen_dep 'sys-devel/lld:${LLVM_SLOT}') )" )
+LLVM_DEPEND+=( "	$(llvm_gen_dep 'sys-devel/llvm:${LLVM_SLOT}')" )
+
+# to bootstrap we need at least exactly previous version, or same.
+# most of the time previous versions fail to bootstrap with newer
+# for example 1.47.x, requires at least 1.46.x, 1.47.x is ok,
+# but it fails to bootstrap with 1.48.x
+# https://github.com/rust-lang/rust/blob/${PV}/src/stage0.json
+RUST_DEP_PREV="$(ver_cut 1).$(($(ver_cut 2) - 1))*"
+RUST_DEP_CURR="$(ver_cut 1).$(ver_cut 2)*"
+BOOTSTRAP_DEPEND="||
+	(
+		=dev-lang/rust-"${RUST_DEP_PREV}"
+		=dev-lang/rust-bin-"${RUST_DEP_PREV}"
+		=dev-lang/rust-"${RUST_DEP_CURR}"
+		=dev-lang/rust-bin-"${RUST_DEP_CURR}"
+	)
+"
+
+BDEPEND="${PYTHON_DEPS}
+	app-eselect/eselect-rust
+	|| (
+		>=sys-devel/gcc-4.7
+		>=sys-devel/clang-3.5
+	)
+	system-bootstrap? ( ${BOOTSTRAP_DEPEND} )
+	!system-llvm? (
+		>=dev-build/cmake-3.13.4
+		app-alternatives/ninja
+	)
+	test? ( dev-debug/gdb )
+	verify-sig? ( sec-keys/openpgp-keys-rust )
+"
+
+DEPEND="
+	>=app-arch/xz-utils-5.2
+	net-misc/curl:=[http2,ssl]
+	sys-libs/zlib:=
+	dev-libs/openssl:0=
+	system-llvm? (
+		${LLVM_DEPEND[*]}
+		llvm-libunwind? ( sys-libs/llvm-libunwind:= )
+	)
+	!system-llvm? (
+		!llvm-libunwind? (
+			elibc_musl? ( sys-libs/libunwind:= )
+		)
+	)
+"
+
+RDEPEND="${DEPEND}
+	app-eselect/eselect-rust
+	dev-lang/rust-common
+	sys-apps/lsb-release
+	!dev-lang/rust:stable
+	!dev-lang/rust-bin:stable
+"
+
+REQUIRED_USE="|| ( ${ALL_LLVM_TARGETS[*]} )
+	miri? ( nightly )
+	parallel-compiler? ( nightly )
+	rust-analyzer? ( rust-src )
+	test? ( ${ALL_LLVM_TARGETS[*]} )
+	wasm? ( llvm_targets_WebAssembly )
+	x86? ( cpu_flags_x86_sse2 )
+"
+
+# we don't use cmake.eclass, but can get a warning
+CMAKE_WARN_UNUSED_CLI=no
+
+QA_FLAGS_IGNORED="
+	usr/lib/${PN}/${PV}/bin/.*
+	usr/lib/${PN}/${PV}/libexec/.*
+	usr/lib/${PN}/${PV}/lib/lib.*.so
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_SONAME="
+	usr/lib/${PN}/${PV}/lib/lib.*.so.*
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/lib.*.so
+"
+
+QA_PRESTRIPPED="
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/bin/rust-llvm-dwp
+	usr/lib/${PN}/${PV}/lib/rustlib/.*/lib/self-contained/crtn.o
+"
+
+# An rmeta file is custom binary format that contains the metadata for the crate.
+# rmeta files do not support linking, since they do not contain compiled object files.
+# so we can safely silence the warning for this QA check.
+QA_EXECSTACK="usr/lib/${PN}/${PV}/lib/rustlib/*/lib*.rlib:lib.rmeta"
+
+# causes double bootstrap
+RESTRICT="test"
+
+VERIFY_SIG_OPENPGP_KEY_PATH=/usr/share/openpgp-keys/rust.asc
+
+PATCHES=(
+	"${FILESDIR}"/1.78.0-musl-dynamic-linking.patch
+	"${FILESDIR}"/1.74.1-cross-compile-libz.patch
+	#"${FILESDIR}"/1.72.0-bump-libc-deps-to-0.2.146.patch  # pending refresh
+	"${FILESDIR}"/1.67.0-doc-wasm.patch
+	"${FILESDIR}"/1.79.0-revert-8c40426.patch
+)
+
+clear_vendor_checksums() {
+	sed -i 's/\("files":{\)[^}]*/\1/' "vendor/${1}/.cargo-checksum.json" || die
+}
+
+toml_usex() {
+	usex "${1}" true false
+}
+
+bootstrap_rust_version_check() {
+	# never call from pkg_pretend. eselect-rust may be not installed yet.
+	[[ ${MERGE_TYPE} == binary ]] && return
+	local rustc_wanted="$(ver_cut 1).$(($(ver_cut 2) - 1))"
+	local rustc_toonew="$(ver_cut 1).$(($(ver_cut 2) + 1))"
+	local rustc_version=( $(eselect --brief --root="${BROOT}" rust show 2>/dev/null) )
+	rustc_version=${rustc_version[0]#rust-bin-}
+	rustc_version=${rustc_version#rust-}
+
+	[[ -z "${rustc_version}" ]] && die "Failed to determine rust version, check 'eselect rust' output"
+
+	if ver_test "${rustc_version}" -lt "${rustc_wanted}" ; then
+		eerror "Rust >=${rustc_wanted} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too old"
+	elif ver_test "${rustc_version}" -ge "${rustc_toonew}" ; then
+		eerror "Rust <${rustc_toonew} is required"
+		eerror "please run 'eselect rust' and set correct rust version"
+		die "selected rust version is too new"
+	else
+		einfo "Using rust ${rustc_version} to build"
+	fi
+}
+
+pre_build_checks() {
+	local M=8192
+	# multiply requirements by 1.3 if we are doing x86-multilib
+	if use amd64; then
+		M=$(( $(usex abi_x86_32 13 10) * ${M} / 10 ))
+	fi
+	M=$(( $(usex clippy 128 0) + ${M} ))
+	M=$(( $(usex miri 128 0) + ${M} ))
+	M=$(( $(usex rustfmt 256 0) + ${M} ))
+	# add 2G if we compile llvm and 256M per llvm_target
+	if ! use system-llvm; then
+		M=$(( 2048 + ${M} ))
+		local ltarget
+		for ltarget in ${ALL_LLVM_TARGETS[@]}; do
+			M=$(( $(usex ${ltarget} 256 0) + ${M} ))
+		done
+	fi
+	M=$(( $(usex wasm 256 0) + ${M} ))
+	M=$(( $(usex debug 2 1) * ${M} ))
+	eshopts_push -s extglob
+	if is-flagq '-g?(gdb)?([1-9])'; then
+		M=$(( 15 * ${M} / 10 ))
+	fi
+	eshopts_pop
+	M=$(( $(usex system-bootstrap 0 1024) + ${M} ))
+	M=$(( $(usex doc 256 0) + ${M} ))
+	CHECKREQS_DISK_BUILD=${M}M check-reqs_pkg_${EBUILD_PHASE}
+}
+
+llvm_check_deps() {
+	has_version -r "sys-devel/llvm:${LLVM_SLOT}[${LLVM_TARGET_USEDEPS// /,}]"
+}
+
+# Is LLVM being linked against libc++?
+is_libcxx_linked() {
+	local code='#include <ciso646>
+#if defined(_LIBCPP_VERSION)
+	HAVE_LIBCXX
+#endif
+'
+	local out=$($(tc-getCXX) ${CXXFLAGS} ${CPPFLAGS} -x c++ -E -P - <<<"${code}") || return 1
+	[[ ${out} == *HAVE_LIBCXX* ]]
+}
+
+pkg_pretend() {
+	pre_build_checks
+}
+
+pkg_setup() {
+	pre_build_checks
+	python-any-r1_pkg_setup
+
+	export LIBGIT2_NO_PKG_CONFIG=1 #749381
+	if tc-is-cross-compiler; then
+		export PKG_CONFIG_ALLOW_CROSS=1
+		export PKG_CONFIG_PATH="${ROOT}/usr/$(get_libdir)/pkgconfig"
+		export OPENSSL_INCLUDE_DIR="${ROOT}/usr/include"
+		export OPENSSL_LIB_DIR="${ROOT}/usr/$(get_libdir)"
+
+		use system-bootstrap || die "USE=system-bootstrap is required when cross-compiling"
+		use system-llvm && die "USE=system-llvm not allowed when cross-compiling"
+		local cross_llvm_target="$(llvm_tuple_to_target "${CBUILD}")"
+		use "llvm_targets_${cross_llvm_target}" || \
+			die "Must enable LLVM_TARGETS=${cross_llvm_target} matching CBUILD=${CBUILD} when cross-compiling"
+	fi
+
+	use system-bootstrap && bootstrap_rust_version_check
+
+	if use system-llvm; then
+		llvm-r1_pkg_setup
+
+		local llvm_config="$(get_llvm_prefix)/bin/llvm-config"
+		export LLVM_LINK_SHARED=1
+		export RUSTFLAGS="${RUSTFLAGS} -Lnative=$("${llvm_config}" --libdir)"
+	fi
+}
+
+esetup_unwind_hack() {
+	# https://bugs.gentoo.org/870280
+	# this is a hack needed to bootstrap with libgcc_s linked tarball on llvm-libunwind system.
+	# it should trigger for internal bootstrap or system-bootstrap with rust-bin.
+	# the whole idea is for stage0 to bootstrap with fake libgcc_s.
+	# final stage will receive -L${T}/lib but not -lgcc_s args, producing clean compiler.
+	local fakelib="${T}/fakelib"
+	mkdir -p "${fakelib}" || die
+	# we need both symlinks, one for cargo runtime, other for linker.
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so.1" || die
+	ln -s "${ESYSROOT}/usr/lib/libunwind.so" "${fakelib}/libgcc_s.so" || die
+	export LD_LIBRARY_PATH="${fakelib}"
+	export RUSTFLAGS+=" -L${fakelib}"
+	# this is a literally magic variable that gets through cargo cache, without it some
+	# crates ignore RUSTFLAGS.
+	# this variable can not contain leading space.
+	export MAGIC_EXTRA_RUSTFLAGS+="${MAGIC_EXTRA_RUSTFLAGS:+ }-L${fakelib}"
+}
+
+src_prepare() {
+	# Clear vendor checksums for crates that we patched to bump libc.
+	# NOTE: refresh this on each bump.
+	#for i in addr2line-0.20.0 bstr cranelift-jit crossbeam-channel elasticlunr-rs handlebars icu_locid libffi \
+	#	terminal_size tracing-tree; do
+	#	clear_vendor_checksums "${i}"
+	#done
+
+	# Rust baselines to Pentium4 on x86, this patch lowers the baseline to i586 when sse2 is not set.
+	if use x86; then
+		if ! use cpu_flags_x86_sse2; then
+			eapply "${FILESDIR}/1.82.0-i586-baseline.patch"
+			grep -rl cmd.args.push\(\"-march=i686\" . | xargs sed  -i 's/march=i686/-march=i586/g' || die
+		fi
+	fi
+
+	if ! use system-bootstrap; then
+		has_version sys-devel/gcc || esetup_unwind_hack
+		local rust_stage0_root="${WORKDIR}"/rust-stage0
+		local rust_stage0="rust-${RUST_STAGE0_VERSION}-$(rust_abi "${CBUILD}")"
+
+		"${WORKDIR}/${rust_stage0}"/install.sh --disable-ldconfig \
+			--without=rust-docs-json-preview,rust-docs --destdir="${rust_stage0_root}" --prefix=/ || die
+	fi
+
+	default
+}
+
+src_configure() {
+	filter-lto # https://bugs.gentoo.org/862109 https://bugs.gentoo.org/866231
+
+	local rust_target="" rust_targets="" arch_cflags
+
+	# Collect rust target names to compile standard libs for all ABIs.
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_targets+=",\"$(rust_abi $(get_abi_CHOST ${v##*.}))\""
+	done
+	if use wasm; then
+		rust_targets+=",\"wasm32-unknown-unknown\""
+		if use system-llvm; then
+			# un-hardcode rust-lld linker for this target
+			# https://bugs.gentoo.org/715348
+			sed -i '/linker:/ s/rust-lld/wasm-ld/' compiler/rustc_target/src/spec/base/wasm.rs || die
+		fi
+	fi
+	rust_targets="${rust_targets#,}"
+
+	# cargo and rustdoc are mandatory and should always be included
+	local tools='"cargo","rustdoc"'
+	use clippy && tools+=',"clippy"'
+	use miri && tools+=',"miri"'
+	use rustfmt && tools+=',"rustfmt"'
+	use rust-analyzer && tools+=',"rust-analyzer","rust-analyzer-proc-macro-srv"'
+	use rust-src && tools+=',"src"'
+
+	local rust_stage0_root
+	if use system-bootstrap; then
+		local printsysroot
+		printsysroot="$(rustc --print sysroot || die "Can't determine rust's sysroot")"
+		rust_stage0_root="${printsysroot}"
+	else
+		rust_stage0_root="${WORKDIR}"/rust-stage0
+	fi
+	# in case of prefix it will be already prefixed, as --print sysroot returns full path
+	[[ -d ${rust_stage0_root} ]] || die "${rust_stage0_root} is not a directory"
+
+	rust_target="$(rust_abi)"
+	rust_build="$(rust_abi "${CBUILD}")"
+	rust_host="$(rust_abi "${CHOST}")"
+
+	local cm_btype="$(usex debug DEBUG RELEASE)"
+	cat <<- _EOF_ > "${S}"/config.toml
+		[llvm]
+		download-ci-llvm = false
+		optimize = $(toml_usex !debug)
+		release-debuginfo = $(toml_usex debug)
+		assertions = $(toml_usex debug)
+		ninja = true
+		targets = "${LLVM_TARGETS// /;}"
+		experimental-targets = ""
+		link-shared = $(toml_usex system-llvm)
+		$(if is_libcxx_linked; then
+			# https://bugs.gentoo.org/732632
+			echo "use-libcxx = true"
+			echo "static-libstdcpp = false"
+		fi)
+		$(case "${rust_target}" in
+			i586-*-linux-*)
+				# https://github.com/rust-lang/rust/issues/93059
+				echo 'cflags = "-fcf-protection=none"'
+				echo 'cxxflags = "-fcf-protection=none"'
+				echo 'ldflags = "-fcf-protection=none"'
+				;;
+			*)
+				;;
+		esac)
+		enable-warnings = false
+		[llvm.build-config]
+		CMAKE_VERBOSE_MAKEFILE = "ON"
+		$(if ! tc-is-cross-compiler; then
+			# When cross-compiling, LLVM is compiled twice, once for host and
+			# once for target.  Unfortunately, this build configuration applies
+			# to both, which means any flags applicable to one target but not
+			# the other will break.  Conditionally disable respecting user
+			# flags when cross-compiling.
+			echo "CMAKE_C_FLAGS_${cm_btype} = \"${CFLAGS}\""
+			echo "CMAKE_CXX_FLAGS_${cm_btype} = \"${CXXFLAGS}\""
+			echo "CMAKE_EXE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_MODULE_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_SHARED_LINKER_FLAGS_${cm_btype} = \"${LDFLAGS}\""
+			echo "CMAKE_STATIC_LINKER_FLAGS_${cm_btype} = \"${ARFLAGS}\""
+		fi)
+		[build]
+		build-stage = 2
+		test-stage = 2
+		build = "${rust_build}"
+		host = ["${rust_host}"]
+		target = [${rust_targets}]
+		cargo = "${rust_stage0_root}/bin/cargo"
+		rustc = "${rust_stage0_root}/bin/rustc"
+		rustfmt = "${rust_stage0_root}/bin/rustfmt"
+		docs = $(toml_usex doc)
+		compiler-docs = false
+		submodules = false
+		python = "${EPYTHON}"
+		locked-deps = true
+		vendor = true
+		extended = true
+		tools = [${tools}]
+		verbose = 2
+		sanitizers = false
+		profiler = true
+		cargo-native-static = false
+		[install]
+		prefix = "${EPREFIX}/usr/lib/${PN}/${PV}"
+		sysconfdir = "etc"
+		docdir = "share/doc/rust"
+		bindir = "bin"
+		libdir = "lib"
+		mandir = "share/man"
+		[rust]
+		# https://github.com/rust-lang/rust/issues/54872
+		codegen-units-std = 1
+		optimize = true
+		debug = $(toml_usex debug)
+		debug-assertions = $(toml_usex debug)
+		debug-assertions-std = $(toml_usex debug)
+		debuginfo-level = $(usex debug 2 0)
+		debuginfo-level-rustc = $(usex debug 2 0)
+		debuginfo-level-std = $(usex debug 2 0)
+		debuginfo-level-tools = $(usex debug 2 0)
+		debuginfo-level-tests = 0
+		backtrace = true
+		incremental = false
+		$(if ! tc-is-cross-compiler; then
+			echo "default-linker = \"$(tc-getCC)\""
+		fi)
+		parallel-compiler = $(toml_usex parallel-compiler)
+		channel = "$(usex nightly nightly stable)"
+		description = "gentoo"
+		rpath = false
+		verbose-tests = true
+		optimize-tests = $(toml_usex !debug)
+		codegen-tests = true
+		dist-src = false
+		remap-debuginfo = true
+		lld = $(usex system-llvm false $(toml_usex wasm))
+		# only deny warnings if doc+wasm are NOT requested, documenting stage0 wasm std fails without it
+		# https://github.com/rust-lang/rust/issues/74976
+		# https://github.com/rust-lang/rust/issues/76526
+		deny-warnings = $(usex wasm $(usex doc false true) true)
+		backtrace-on-ice = true
+		jemalloc = false
+		# See https://github.com/rust-lang/rust/issues/121124
+		lto = "$(usex lto thin off)"
+		[dist]
+		src-tarball = false
+		compression-formats = ["xz"]
+		compression-profile = "balanced"
+	_EOF_
+
+	for v in $(multilib_get_enabled_abi_pairs); do
+		rust_target=$(rust_abi $(get_abi_CHOST ${v##*.}))
+		arch_cflags="$(get_abi_CFLAGS ${v##*.})"
+
+		export CFLAGS_${rust_target//-/_}="${arch_cflags}"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${rust_target}]
+			ar = "$(tc-getAR)"
+			cc = "$(tc-getCC)"
+			cxx = "$(tc-getCXX)"
+			linker = "$(tc-getCC)"
+			ranlib = "$(tc-getRANLIB)"
+			llvm-libunwind = "$(usex llvm-libunwind $(usex system-llvm system in-tree) no)"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		# by default librustc_target/spec/linux_musl_base.rs sets base.crt_static_default = true;
+		# but we patch it and set to false here as well
+		if use elibc_musl; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				crt-static = false
+				musl-root = "$($(tc-getCC) -print-sysroot)/usr"
+			_EOF_
+		fi
+	done
+	if use wasm; then
+		wasm_target="wasm32-unknown-unknown"
+		export CFLAGS_${wasm_target//-/_}="$(filter-flags '-mcpu*' '-march*' '-mtune*'; echo "$CFLAGS")"
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.wasm32-unknown-unknown]
+			linker = "$(usex system-llvm lld rust-lld)"
+			# wasm target does not have profiler_builtins https://bugs.gentoo.org/848483
+			profiler = false
+		_EOF_
+	fi
+
+	if [[ -n ${I_KNOW_WHAT_I_AM_DOING_CROSS} ]]; then # whitespace intentionally shifted below
+	# experimental cross support
+	# discussion: https://bugs.gentoo.org/679878
+	# TODO: c*flags, clang, system-llvm, cargo.eclass target support
+	# it would be much better if we could split out stdlib
+	# complilation to separate ebuild and abuse CATEGORY to
+	# just install to /usr/lib/rustlib/<target>
+
+	# extra targets defined as a bash array
+	# spec format:  <LLVM target>:<rust-target>:<CTARGET>
+	# best place would be /etc/portage/env/dev-lang/rust
+	# Example:
+	# RUST_CROSS_TARGETS=(
+	#	"AArch64:aarch64-unknown-linux-gnu:aarch64-unknown-linux-gnu"
+	# )
+	# no extra hand holding is done, no target transformations, all
+	# values are passed as-is with just basic checks, so it's up to user to supply correct values
+	# valid rust targets can be obtained with
+	# 	rustc --print target-list
+	# matching cross toolchain has to be installed
+	# matching LLVM_TARGET has to be enabled for both rust and llvm (if using system one)
+	# only gcc toolchains installed with crossdev are checked for now.
+
+	# BUG: we can't pass host flags to cross compiler, so just filter for now
+	# BUG: this should be more fine-grained.
+	filter-flags '-mcpu=*' '-march=*' '-mtune=*'
+
+	local cross_target_spec
+	for cross_target_spec in "${RUST_CROSS_TARGETS[@]}";do
+		# extracts first element form <LLVM target>:<rust-target>:<CTARGET>
+		local cross_llvm_target="${cross_target_spec%%:*}"
+		# extracts toolchain triples, <rust-target>:<CTARGET>
+		local cross_triples="${cross_target_spec#*:}"
+		# extracts first element after before : separator
+		local cross_rust_target="${cross_triples%%:*}"
+		# extracts last element after : separator
+		local cross_toolchain="${cross_triples##*:}"
+		use llvm_targets_${cross_llvm_target} || die "need llvm_targets_${cross_llvm_target} target enabled"
+		command -v ${cross_toolchain}-gcc > /dev/null 2>&1 || die "need ${cross_toolchain} cross toolchain"
+
+		cat <<- _EOF_ >> "${S}"/config.toml
+			[target.${cross_rust_target}]
+			ar = "${cross_toolchain}-ar"
+			cc = "${cross_toolchain}-gcc"
+			cxx = "${cross_toolchain}-g++"
+			linker = "${cross_toolchain}-gcc"
+			ranlib = "${cross_toolchain}-ranlib"
+		_EOF_
+		if use system-llvm; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				llvm-config = "$(get_llvm_prefix)/bin/llvm-config"
+			_EOF_
+		fi
+		if [[ "${cross_toolchain}" == *-musl* ]]; then
+			cat <<- _EOF_ >> "${S}"/config.toml
+				musl-root = "$(${cross_toolchain}-gcc -print-sysroot)/usr"
+			_EOF_
+		fi
+
+		# append cross target to "normal" target list
+		# example 'target = ["powerpc64le-unknown-linux-gnu"]'
+		# becomes 'target = ["powerpc64le-unknown-linux-gnu","aarch64-unknown-linux-gnu"]'
+
+		rust_targets="${rust_targets},\"${cross_rust_target}\""
+		sed -i "/^target = \[/ s#\[.*\]#\[${rust_targets}\]#" config.toml || die
+
+		ewarn
+		ewarn "Enabled ${cross_rust_target} rust target"
+		ewarn "Using ${cross_toolchain} cross toolchain"
+		ewarn
+		if ! has_version -b 'sys-devel/binutils[multitarget]' ; then
+			ewarn "'sys-devel/binutils[multitarget]' is not installed"
+			ewarn "'strip' will be unable to strip cross libraries"
+			ewarn "cross targets will be installed with full debug information"
+			ewarn "enable 'multitarget' USE flag for binutils to be able to strip object files"
+			ewarn
+			ewarn "Alternatively llvm-strip can be used, it supports stripping any target"
+			ewarn "define STRIP=\"llvm-strip\" to use it (experimental)"
+			ewarn
+		fi
+	done
+	fi # I_KNOW_WHAT_I_AM_DOING_CROSS
+
+	einfo "Rust configured with the following flags:"
+	echo
+	echo RUSTFLAGS="\"${RUSTFLAGS}\""
+	echo RUSTFLAGS_BOOTSTRAP="\"${RUSTFLAGS_BOOTSTRAP}\""
+	echo RUSTFLAGS_NOT_BOOTSTRAP="\"${RUSTFLAGS_NOT_BOOTSTRAP}\""
+	echo MAGIC_EXTRA_RUSTFLAGS="\"${MAGIC_EXTRA_RUSTFLAGS}\""
+	env | grep "CARGO_TARGET_.*_RUSTFLAGS="
+	env | grep "CFLAGS_.*"
+	echo
+	einfo "config.toml contents:"
+	cat "${S}"/config.toml || die
+	echo
+}
+
+src_compile() {
+	RUST_BACKTRACE=1 "${EPYTHON}" ./x.py build -vvv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+}
+
+src_test() {
+	# https://rustc-dev-guide.rust-lang.org/tests/intro.html
+
+	# those are basic and codegen tests.
+	local tests=(
+		codegen
+		codegen-units
+		compile-fail
+		incremental
+		mir-opt
+		pretty
+		run-make
+	)
+
+	# fails if llvm is not built with ALL targets.
+	# and known to fail with system llvm sometimes.
+	use system-llvm || tests+=( assembly )
+
+	# fragile/expensive/less important tests
+	# or tests that require extra builds
+	# TODO: instead of skipping, just make some nonfatal.
+	if [[ ${ERUST_RUN_EXTRA_TESTS:-no} != no ]]; then
+		tests+=(
+			rustdoc
+			rustdoc-js
+			rustdoc-js-std
+			rustdoc-ui
+			run-make-fulldeps
+			ui
+			ui-fulldeps
+		)
+	fi
+
+	local i failed=()
+	einfo "rust_src_test: enabled tests ${tests[@]/#/src/test/}"
+	for i in "${tests[@]}"; do
+		local t="src/test/${i}"
+		einfo "rust_src_test: running ${t}"
+		if ! RUST_BACKTRACE=1 "${EPYTHON}" ./x.py test -vv --config="${S}"/config.toml \
+				-j$(makeopts_jobs) --no-doc --no-fail-fast "${t}"
+		then
+				failed+=( "${t}" )
+				eerror "rust_src_test: ${t} failed"
+		fi
+	done
+
+	if [[ ${#failed[@]} -ne 0 ]]; then
+		eerror "rust_src_test: failure summary: ${failed[@]}"
+		die "aborting due to test failures"
+	fi
+}
+
+src_install() {
+	DESTDIR="${D}" "${EPYTHON}" ./x.py install -vv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+
+	docompress /usr/lib/${PN}/${PV}/share/man/
+
+	# bug #689562, #689160
+	rm -v "${ED}/usr/lib/${PN}/${PV}/etc/bash_completion.d/cargo" || die
+	rmdir -v "${ED}/usr/lib/${PN}/${PV}"/etc{/bash_completion.d,} || die
+
+	local symlinks=(
+		cargo
+		rustc
+		rustdoc
+		rust-gdb
+		rust-gdbgui
+		rust-lldb
+	)
+
+	use clippy && symlinks+=( clippy-driver cargo-clippy )
+	use miri && symlinks+=( miri cargo-miri )
+	use rustfmt && symlinks+=( rustfmt cargo-fmt )
+	use rust-analyzer && symlinks+=( rust-analyzer )
+
+	einfo "installing eselect-rust symlinks and paths: ${symlinks[@]}"
+	local i
+	for i in "${symlinks[@]}"; do
+		# we need realpath on /usr/bin/* symlink return version-appended binary path.
+		# so /usr/bin/rustc should point to /usr/lib/rust/<ver>/bin/rustc-<ver>
+		# need to fix eselect-rust to remove this hack.
+		local ver_i="${i}-${PV}"
+		if [[ -f "${ED}/usr/lib/${PN}/${PV}/bin/${i}" ]]; then
+			einfo "Installing ${i} symlink"
+			ln -v "${ED}/usr/lib/${PN}/${PV}/bin/${i}" "${ED}/usr/lib/${PN}/${PV}/bin/${ver_i}" || die
+		else
+			ewarn "${i} symlink requested, but source file not found"
+			ewarn "please report this"
+		fi
+		dosym "../lib/${PN}/${PV}/bin/${ver_i}" "/usr/bin/${ver_i}"
+	done
+
+	# symlinks to switch components to active rust in eselect
+	dosym "${PV}/lib" "/usr/lib/${PN}/lib-${PV}"
+	dosym "${PV}/libexec" "/usr/lib/${PN}/libexec-${PV}"
+	dosym "${PV}/share/man" "/usr/lib/${PN}/man-${PV}"
+	dosym "rust/${PV}/lib/rustlib" "/usr/lib/rustlib-${PV}"
+	dosym "../../lib/${PN}/${PV}/share/doc/rust" "/usr/share/doc/${P}"
+
+	newenvd - "50${P}" <<-_EOF_
+		LDPATH="${EPREFIX}/usr/lib/rust/lib-${PV}"
+		MANPATH="${EPREFIX}/usr/lib/rust/man-${PV}"
+	_EOF_
+
+	rm -rf "${ED}/usr/lib/${PN}/${PV}"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/bin"/*.old || die
+	rm -rf "${ED}/usr/lib/${PN}/${PV}/doc"/*.old || die
+
+	# note: eselect-rust adds EROOT to all paths below
+	cat <<-_EOF_ > "${T}/provider-${P}"
+		/usr/bin/cargo
+		/usr/bin/rustdoc
+		/usr/bin/rust-gdb
+		/usr/bin/rust-gdbgui
+		/usr/bin/rust-lldb
+		/usr/lib/rustlib
+		/usr/lib/rust/lib
+		/usr/lib/rust/libexec
+		/usr/lib/rust/man
+		/usr/share/doc/rust
+	_EOF_
+
+	if use clippy; then
+		echo /usr/bin/clippy-driver >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-clippy >> "${T}/provider-${P}"
+	fi
+	if use miri; then
+		echo /usr/bin/miri >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-miri >> "${T}/provider-${P}"
+	fi
+	if use rustfmt; then
+		echo /usr/bin/rustfmt >> "${T}/provider-${P}"
+		echo /usr/bin/cargo-fmt >> "${T}/provider-${P}"
+	fi
+	if use rust-analyzer; then
+		echo /usr/bin/rust-analyzer >> "${T}/provider-${P}"
+	fi
+
+	insinto /etc/env.d/rust
+	doins "${T}/provider-${P}"
+
+	if use dist; then
+		"${EPYTHON}" ./x.py dist -vv --config="${S}"/config.toml -j$(makeopts_jobs) || die
+		insinto "/usr/lib/${PN}/${PV}/dist"
+		doins -r "${S}/build/dist/."
+	fi
+}
+
+pkg_postinst() {
+	eselect rust update
+
+	if has_version dev-debug/gdb || has_version dev-debug/lldb; then
+		elog "Rust installs a helper script for calling GDB and LLDB,"
+		elog "for your convenience it is installed under /usr/bin/rust-{gdb,lldb}-${PV}."
+	fi
+
+	if has_version app-editors/emacs; then
+		optfeature "emacs support for rust" app-emacs/rust-mode
+	fi
+
+	if has_version app-editors/gvim || has_version app-editors/vim; then
+		optfeature "vim support for rust" app-vim/rust-vim
+	fi
+}
+
+pkg_postrm() {
+	eselect rust cleanup
+}
diff --git a/dev-lang/spidermonkey/Manifest b/dev-lang/spidermonkey/Manifest
index a1ae7e7bb4ee..9b46ee4c3d4c 100644
--- a/dev-lang/spidermonkey/Manifest
+++ b/dev-lang/spidermonkey/Manifest
@@ -12,8 +12,8 @@ DIST firefox-128esr-patches-04.tar.xz 14416 BLAKE2B 0ffe3fd568480e37fe28fe71d530
 DIST spidermonkey-102-patches-05j.tar.xz 4596 BLAKE2B 215b770bbdf17973d7b3fd1df6cee9647459d2b02b0be5bdb289d457e5dbdb06ceac7a3082fc2f5836e991a4ac4486d73330b0276a466b5c528dab226a27829c SHA512 d2b8e32dac87d60a00fd93479dc34d8adab4feec24a38591cebeb4cf271aa2fd964f4dc26e67ebfb127a47bc8f684d50b32b2cff18ed5286701a04a289058185
 DIST spidermonkey-115-patches-02.tar.xz 4896 BLAKE2B f78d9804c1427b45d6fda496b4991ec6f672dec9ce031ed57a2920fa1968c942a235f46e40166c8ab8d731a1963f322d34bb2f6984133179175e6f7376d27d13 SHA512 11fd01152d1e7b8ca89bf628076e1f4fb4f1ba6c9dc0f9dd544252495c580c04e4d5ffc238d5587f9e993aa91a47828333564ca55f60e008bd370089cd07d2e6
 DIST spidermonkey-128-patches-02.tar.xz 3916 BLAKE2B b6640860ea091b22c61b2a78da5004816a08ab9fb39fda04ae76fe48a3a8061770d6d6e451e5f34951aa3f63473dd77d3dde8b60aec80b4c31f1b29064ce68ee SHA512 3f2d272a36ca2ac831de9108769c68e380be4e8bba7071d02686699702acac6a9325e4256d9c5c2441c3742552179031b0898d3f96f08477857fd6e989596ee6
-EBUILD spidermonkey-102.15.0.ebuild 15624 BLAKE2B a10e3fb8fcbc0f0016778a3c5bb1caea09b05eef2d059f5bb920158b45e9f15ab1e9bd9da90300457e68a147b334a49a86bd1dd07f036feedfa69d17491e63a5 SHA512 c71d02f78d2196e9afa44e3481fa9f6ef8324799b4a4a460eab531ca3d51e09a1b43a15bd2efbac5d11d03bb410babe6400236220684641c97aaa030ee970fdf
-EBUILD spidermonkey-115.16.0.ebuild 13973 BLAKE2B f2a8521abbef69521e5f0e6d11dce0c9e3e33b23bc424bdf7b1d104684db9acd5d27b43a50ee4cc7c6df691988845b24c5190e3a4aa7fbef9d5df30343f0b34e SHA512 f39ec057fd2866f764e5ff63069843e50bec25be7a1018c5a1a115f22d15892237090f1373631e60fec9296ba8e954d8a5f5dafd274896bc4e663e0cb2d4724a
-EBUILD spidermonkey-128.3.0.ebuild 14004 BLAKE2B adebce798253690c8a54312629fef6da2749a7a2f742c3fcc414b712b8c1b9c50d78514df1829e2d3e58cbfa692e911418459d3d70e48de584817d2bb846c02d SHA512 eef1fcbacf991e224a3f1b3345beac3c8473053e907d99d5fe46c0bd9aa93f1000caab80fe2f91a34f184e73279312fb27f28ea82f39f6416cd00efa9ac16035
-EBUILD spidermonkey-128.4.0.ebuild 14004 BLAKE2B d7af1322cd38ccf620466ed62e0886c783ef1c50897022cd85082a422cb7b932aaeae637d835234c90fb24e8ed856d1da33b6729d8c955bd22bd5f98658c9a42 SHA512 ce19a8d6c568229aefa1949d971aa099476b7dd08f5a22f416da0e931a72a99a3e820df9e4683bbe7d1668d3a71bb36aca0ef64346cd8b4ddd3408d7bba28a0b
+EBUILD spidermonkey-102.15.0-r1.ebuild 15100 BLAKE2B 4a3ba5c9cea694f9aaea6bb6a57958d55c7f8af568699e1e3d637d33740213badf1a3090a113524487706ee395130d8eb50865861e269355ef497000e55b2e3f SHA512 c875a3ba64c50d343a29b88e9f8c8537372f5d1bc44369d0a6e6e70c28d5a40b5da6010effe2298adb21c30b86e04502d9af8e424a75f1403ee04e322fcb164b
+EBUILD spidermonkey-115.16.0-r1.ebuild 13394 BLAKE2B 6006d416587012ffe01c837a99cce378b9b8243613a29b328f6d75ea39b1ddf5ae1258ac8676f8297116a6e11c486eb0ac1dd1c30f2adb0c8a93ccdcd41712ff SHA512 fb437e82ff2e78e5a9bc2a61b7a071f6cf371d64e60e0dd367191d6de96e6cdcc04e77f139bb949b1211a7fd4363d6f3ddc8b687b6827092938562fbf7f39589
+EBUILD spidermonkey-128.3.0-r1.ebuild 13770 BLAKE2B 59c14fb76b00c49b076338275f7979aa57b7975330afaefb401a8761b13bb26c73d2c53526d247eab79e3487c1dc44ea84a247029086fdcb0379f501f54888b3 SHA512 1206fda2249916e3f36e144aaa4df09f96dbcd38198dfe46da82fd3e1d7fdce6af162ade693a14eb72df0aede5188d3ecf23541f12cfef30a0c48c3dafe580e6
+EBUILD spidermonkey-128.4.0-r1.ebuild 13751 BLAKE2B 31c04d00bd8cd5c3703a0798b7d6cdd9f2c0c4a7c61f1a2002bf19385ac1733fb18ada53084696191d5e2919099250a35ed10faca0869524073cd771afbc300f SHA512 13bfd09838b7883a2974736cce6499a346887f43edc8f0716d3efdae21d19bfb4a8d4108656e05094b7097bae362ac12dd11d1a2da06eb093508204026dc9937
 MISC metadata.xml 513 BLAKE2B 58ffd474492f03c16bda95e48511fb6281e03067d2ad77e994f8117345ecece5da9591dccedafe75b037d98e06851a3759caa4b993adc2910dbb76e1c01a7fa3 SHA512 1ee02bff37e2dabbd72b7f719463b12299270c7960b4cf5a92afab17c954c50e6acb826d4a91db4954fb4a7b0f8669988f2cdb5be991df90e3a605c6b35fdbfb
diff --git a/dev-lang/spidermonkey/spidermonkey-102.15.0.ebuild b/dev-lang/spidermonkey/spidermonkey-102.15.0-r1.ebuild
index b1ab05478ed6..bf9a67de35f8 100644
--- a/dev-lang/spidermonkey/spidermonkey-102.15.0.ebuild
+++ b/dev-lang/spidermonkey/spidermonkey-102.15.0-r1.ebuild
@@ -7,14 +7,16 @@ EAPI="8"
 FIREFOX_PATCHSET="firefox-102esr-patches-13.tar.xz"
 SPIDERMONKEY_PATCHSET="spidermonkey-102-patches-05j.tar.xz"
 
-LLVM_MAX_SLOT=17
+LLVM_COMPAT=( 17 )
 
 PYTHON_COMPAT=( python3_{10..11} )
 PYTHON_REQ_USE="ssl,xml(+)"
 
+RUST_NEEDS_LLVM=1
+
 WANT_AUTOCONF="2.1"
 
-inherit autotools check-reqs flag-o-matic llvm multiprocessing prefix python-any-r1 toolchain-funcs
+inherit autotools check-reqs flag-o-matic llvm-r1 multiprocessing prefix python-any-r1 rust toolchain-funcs
 
 MY_PN="mozjs"
 MY_PV="${PV/_pre*}" # Handle Gentoo pre-releases
@@ -71,41 +73,13 @@ IUSE="clang cpu_flags_arm_neon debug +jit lto test"
 RESTRICT="!test? ( test )"
 
 BDEPEND="${PYTHON_DEPS}
-	|| (
-		(
-			sys-devel/llvm:17
-			clang? (
-				sys-devel/clang:17
-				sys-devel/lld:17
-				virtual/rust:0/llvm-17
-			)
-		)
-		(
-			sys-devel/llvm:16
-			clang? (
-				sys-devel/clang:16
-				sys-devel/lld:16
-				virtual/rust:0/llvm-16
-			)
-		)
-		(
-			sys-devel/llvm:15
-			clang? (
-				sys-devel/clang:15
-				virtual/rust:0/llvm-15
-				lto? ( sys-devel/lld:15 )
-			)
-		)
-		(
-			sys-devel/llvm:14
-			clang? (
-				sys-devel/clang:14
-				virtual/rust:0/llvm-14
-				lto? ( sys-devel/lld:14 )
-			)
+	$(llvm_gen_dep '
+		sys-devel/clang:${LLVM_SLOT}
+		sys-devel/llvm:${LLVM_SLOT}
+		clang? (
+			sys-devel/lld:${LLVM_SLOT}
 		)
-	)
-	!clang? ( virtual/rust )
+	')
 	virtual/pkgconfig
 	test? (
 		$(python_gen_any_dep 'dev-python/six[${PYTHON_USEDEP}]')
@@ -130,11 +104,6 @@ llvm_check_deps() {
 			return 1
 		fi
 
-		if ! has_version -b "virtual/rust:0/llvm-${LLVM_SLOT}" ; then
-			einfo "virtual/rust:0/llvm-${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
-			return 1
-		fi
-
 		if use lto ; then
 			if ! has_version -b "sys-devel/lld:${LLVM_SLOT}" ; then
 				einfo "sys-devel/lld:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
@@ -172,7 +141,8 @@ pkg_setup() {
 
 		check-reqs_pkg_setup
 
-		llvm_pkg_setup
+		llvm-r1_pkg_setup
+		rust_pkg_setup
 
 		if use clang && use lto ; then
 			local version_lld=$(ld.lld --version 2>/dev/null | awk '{ print $2 }')
diff --git a/dev-lang/spidermonkey/spidermonkey-115.16.0.ebuild b/dev-lang/spidermonkey/spidermonkey-115.16.0-r1.ebuild
index ec49a5bdada9..b1444fb6dae3 100644
--- a/dev-lang/spidermonkey/spidermonkey-115.16.0.ebuild
+++ b/dev-lang/spidermonkey/spidermonkey-115.16.0-r1.ebuild
@@ -7,14 +7,16 @@ EAPI="8"
 FIREFOX_PATCHSET="firefox-115esr-patches-13.tar.xz"
 SPIDERMONKEY_PATCHSET="spidermonkey-115-patches-02.tar.xz"
 
-LLVM_MAX_SLOT=18
+LLVM_COMPAT=( 18 )
 
 PYTHON_COMPAT=( python3_{10..12} )
 PYTHON_REQ_USE="ncurses,ssl,xml(+)"
 
+RUST_NEEDS_LLVM="1"
+
 WANT_AUTOCONF="2.1"
 
-inherit autotools check-reqs flag-o-matic llvm multiprocessing prefix python-any-r1 toolchain-funcs
+inherit autotools check-reqs flag-o-matic llvm-r1 multiprocessing prefix python-any-r1 rust toolchain-funcs
 
 MY_PN="mozjs"
 MY_PV="${PV/_pre*}" # Handle Gentoo pre-releases
@@ -72,47 +74,13 @@ RESTRICT="!test? ( test )"
 
 BDEPEND="${PYTHON_DEPS}
 	virtual/pkgconfig
-	|| (
-		(
-			sys-devel/llvm:18
-			clang? (
-				sys-devel/lld:18
-				sys-devel/clang:18
-				virtual/rust:0/llvm-18
-			)
-		)
-		(
-			sys-devel/llvm:17
-			clang? (
-				sys-devel/lld:17
-				sys-devel/clang:17
-				virtual/rust:0/llvm-17
-			)
-		)
-		(
-			sys-devel/llvm:16
-			clang? (
-				sys-devel/lld:16
-				sys-devel/clang:16
-				virtual/rust:0/llvm-16
-			)
-		)
-		(
-			sys-devel/llvm:15
-			clang? (
-				sys-devel/lld:15
-				sys-devel/clang:15
-				virtual/rust:0/llvm-15
-			)
-		)
-	)
-	!clang? ( virtual/rust )
-	!elibc_glibc? (
-		|| (
-			dev-lang/rust
-			<dev-lang/rust-bin-1.73
+	$(llvm_gen_dep '
+		sys-devel/clang:${LLVM_SLOT}
+		sys-devel/llvm:${LLVM_SLOT}
+		clang? (
+			sys-devel/lld:${LLVM_SLOT}
 		)
-	)
+	')
 	test? (
 		$(python_gen_any_dep 'dev-python/six[${PYTHON_USEDEP}]')
 	)"
@@ -136,11 +104,6 @@ llvm_check_deps() {
 			return 1
 		fi
 
-		if ! has_version -b "virtual/rust:0/llvm-${LLVM_SLOT}" ; then
-			einfo "virtual/rust:0/llvm-${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
-			return 1
-		fi
-
 		if ! tc-ld-is-mold ; then
 			if ! has_version -b "sys-devel/lld:${LLVM_SLOT}" ; then
 				einfo "sys-devel/lld:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
@@ -212,7 +175,8 @@ pkg_setup() {
 
 		check-reqs_pkg_setup
 
-		llvm_pkg_setup
+		llvm-r1_pkg_setup
+		rust_pkg_setup
 
 		if use clang && use lto && tc-ld-is-lld ; then
 			local version_lld=$(ld.lld --version 2>/dev/null | awk '{ print $2 }')
diff --git a/dev-lang/spidermonkey/spidermonkey-128.3.0.ebuild b/dev-lang/spidermonkey/spidermonkey-128.3.0-r1.ebuild
index 77e9e3247dbd..9b70f62cf9c9 100644
--- a/dev-lang/spidermonkey/spidermonkey-128.3.0.ebuild
+++ b/dev-lang/spidermonkey/spidermonkey-128.3.0-r1.ebuild
@@ -11,9 +11,11 @@ LLVM_COMPAT=( 17 18 19 )
 PYTHON_COMPAT=( python3_{10..12} )
 PYTHON_REQ_USE="ncurses,ssl,xml(+)"
 
+RUST_NEEDS_LLVM=1
+
 WANT_AUTOCONF="2.1"
 
-inherit autotools check-reqs flag-o-matic llvm-r1 multiprocessing python-any-r1 toolchain-funcs
+inherit autotools check-reqs flag-o-matic llvm-r1 multiprocessing python-any-r1 rust toolchain-funcs
 
 MY_PN="mozjs"
 MY_PV="${PV/_pre*}"
@@ -73,11 +75,8 @@ BDEPEND="${PYTHON_DEPS}
 			sys-devel/clang:${LLVM_SLOT}
 			sys-devel/lld:${LLVM_SLOT}
 			sys-devel/llvm:${LLVM_SLOT}
-			virtual/rust:0/llvm-${LLVM_SLOT}
 		)
 	')
-	!clang? ( virtual/rust )
-	!elibc_glibc? ( dev-lang/rust )
 	>=dev-util/cbindgen-0.26.0
 	virtual/pkgconfig
 	test? (
@@ -103,11 +102,6 @@ llvm_check_deps() {
 			return 1
 		fi
 
-		if ! has_version -b "virtual/rust:0/llvm-${LLVM_SLOT}" ; then
-			einfo "virtual/rust:0/llvm-${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
-			return 1
-		fi
-
 		if ! tc-ld-is-mold ; then
 			if ! has_version -b "sys-devel/lld:${LLVM_SLOT}" ; then
 				einfo "sys-devel/lld:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
@@ -189,6 +183,7 @@ pkg_setup() {
 		check-reqs_pkg_setup
 
 		llvm-r1_pkg_setup
+		rust_pkg_setup
 
 		if use clang && use lto && tc-ld-is-lld ; then
 			local version_lld=$(ld.lld --version 2>/dev/null | awk '{ print $2 }')
diff --git a/dev-lang/spidermonkey/spidermonkey-128.4.0.ebuild b/dev-lang/spidermonkey/spidermonkey-128.4.0-r1.ebuild
index 3915902d6caa..0bf52dabea6e 100644
--- a/dev-lang/spidermonkey/spidermonkey-128.4.0.ebuild
+++ b/dev-lang/spidermonkey/spidermonkey-128.4.0-r1.ebuild
@@ -13,7 +13,7 @@ PYTHON_REQ_USE="ncurses,ssl,xml(+)"
 
 WANT_AUTOCONF="2.1"
 
-inherit autotools check-reqs flag-o-matic llvm-r1 multiprocessing python-any-r1 toolchain-funcs
+inherit autotools check-reqs flag-o-matic llvm-r1 multiprocessing python-any-r1 rust toolchain-funcs
 
 MY_PN="mozjs"
 MY_PV="${PV/_pre*}"
@@ -73,11 +73,8 @@ BDEPEND="${PYTHON_DEPS}
 			sys-devel/clang:${LLVM_SLOT}
 			sys-devel/lld:${LLVM_SLOT}
 			sys-devel/llvm:${LLVM_SLOT}
-			virtual/rust:0/llvm-${LLVM_SLOT}
 		)
 	')
-	!clang? ( virtual/rust )
-	!elibc_glibc? ( dev-lang/rust )
 	>=dev-util/cbindgen-0.26.0
 	virtual/pkgconfig
 	test? (
@@ -103,11 +100,6 @@ llvm_check_deps() {
 			return 1
 		fi
 
-		if ! has_version -b "virtual/rust:0/llvm-${LLVM_SLOT}" ; then
-			einfo "virtual/rust:0/llvm-${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
-			return 1
-		fi
-
 		if ! tc-ld-is-mold ; then
 			if ! has_version -b "sys-devel/lld:${LLVM_SLOT}" ; then
 				einfo "sys-devel/lld:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
@@ -189,6 +181,7 @@ pkg_setup() {
 		check-reqs_pkg_setup
 
 		llvm-r1_pkg_setup
+		rust_pkg_setup
 
 		if use clang && use lto && tc-ld-is-lld ; then
 			local version_lld=$(ld.lld --version 2>/dev/null | awk '{ print $2 }')
author	V3n3RiX <venerix@koprulu.sector>	2024-11-10 03:03:09 +0000
committer	V3n3RiX <venerix@koprulu.sector>	2024-11-10 03:03:09 +0000
commit	be94ae04eee564451203d45977c2ef7c7ace1580 (patch)
tree	616ffc0ad9aee18dc7d5e9e62bf62394e8e520ba /dev-lang
parent	2be329ae14bbf99f0fc4de7567e2386bbb529fdc (diff)