gentoo christmass resync : 25.12.2020

3 files changed, 806 insertions, 3 deletions

diff --git a/dev-lang/ghc/Manifest b/dev-lang/ghc/Manifest
index 8ff2cfe6f8eb..34aae95b2afb 100644
--- a/dev-lang/ghc/Manifest
+++ b/dev-lang/ghc/Manifest
@@ -49,6 +49,8 @@ DIST ghc-8.10.1-src.tar.xz 19781652 BLAKE2B 61ff73d3a895cfa0c836e25a684d7a31cf09
 DIST ghc-8.10.1-testsuite.tar.xz 2091988 BLAKE2B 88796f0fb6ea2bdd749161c84ec88768f3bf87063d2224a083db24f69282e615227626fe3c7b41d4abec10883e22042abed6a231582bab4ea530feffd683ed0b SHA512 35147f98301c5bfb6c939e108de48b2a1133adc1028aaa720ce49d60faa06a4b486a9eded658295e3f203731b4dd53475b57e8213491c45b05959430030be269
 DIST ghc-8.10.2-src.tar.xz 21880680 BLAKE2B 0c1b67c1576cfd1067d11838301f96041cabf66b94cfd546cfe6bef57babe940fc3814918ff9327e59fe73a8e230fa1d62d7816d7c6cae274dd8c53de6e81736 SHA512 6c3f1311feab3665419a301b17fcb09d303ec822f8eb8c4021edfacff00d9b52e71895bed0e58f11d8f7970415bd8c6f95ffde1294afe795e15607199b20cefc
 DIST ghc-8.10.2-testsuite.tar.xz 2101788 BLAKE2B 0d4528223471dfd68cadcda47931d53508c9eafa415716ca5990ea519eb89bfa2bdd444280057be33467382dd3d178887262d54ef633aa8ce88ea91eb9d58ece SHA512 043faaf2f0dc34a868c481b284b94afd78aa1ec1a4056d1f3c97ca3f7dadb3e9cff0517a4cfb378fe5187389db7c9027763bf066328e7dcfd264b737f6d09e41
+DIST ghc-8.10.3-src.tar.xz 19872356 BLAKE2B 043f41a21becc826b3cd13ee81b138cf2edfa18484f98361dc85b12f784df85571522347d5fafe40a19ea8ddf12390cd766db8fc21cf4971e797bc61404304cc SHA512 6f3248e728d3677dfddf2f02609167c67a194750418f2a5e34ed68f1135960761c5a5768255bfc8b2ef5640395609424878375184d2dde8e2d69021a3baf9ec8
+DIST ghc-8.10.3-testsuite.tar.xz 2261376 BLAKE2B cd03d569c30637d531d9a13fa926a28f854a37d48ef0d4e2fde684664ae000f3c941b5113ccafd42fec019428bafb5344b1ddf8f84a71b21bca8831ed4784907 SHA512 4c9d20a27ed71eb7c73bd86c1049ea5adcc8a0b12040386b7d0dddb46b3cf704c52a3392e19ae4ff1c76b8868665c599391d47e47dba516fcadf8abbc30e28df
 DIST ghc-8.2.1-src.tar.xz 10736016 BLAKE2B 60993cfc9569e83b0c383591ef30a7280e0138fbb7bd696ad62d87e68dcbccf31c0b8ba211b6647922b8595c7aec2c783648f12c67da53e0766b71c7d7c923fc SHA512 d9aa2aa7f9414db8f4e51d6c275694b46df515e68331a1a2b6018256333a2c63ebd877b75ee90407ecce5be672ec9afc6bebd62aadbf8ae06b94f1760d1736be
 DIST ghc-8.2.2-src.tar.xz 10753272 BLAKE2B 6fd792390d3df20f84836466705c3f3c931ba2d594dcbe2b808ea0ae284460000b443df8aae74903eabf05ff9064d68a303086cf888ea68222eb1c60959c8f21 SHA512 6549416f470b599973d409fa45f59c25b07e6a94798cef1a19ad432547dc225338cf4dbc4a4793114b4a417798a3b59b122b92b020251074405c5302b7ffe799
 DIST ghc-8.4.1-src.tar.xz 11301528 BLAKE2B 6dcf467d04cace856b68315c85b80f19b517dcbc8ae6e2a08c60afa141c9e0261e012738452c9ca208f9fc40c48bd1a0817e5e0fe9f4737383cd7b44ca65c8d9 SHA512 f8ae11f498bf2911fb92635534c6906c96f1fbe5072c7b7447bd3f69e408026b674564515af02a8aaddc57ee6905ce78d10005b12478a39c220580aaec13a9f7
@@ -89,7 +91,10 @@ DIST ghc-bin-8.0.2-ppc64.tbz2 117432068 BLAKE2B cae202f0d6e825127d543996b2fe7ae0
 DIST ghc-bin-8.0.2-x86_64-pc-linux-gnu.tbz2 130852973 BLAKE2B 24d2032bbfc664d924800c1a317334e2342c8ec1e529178f9d1bb99bb4772a9cc100603bf70111b8cfafa715c1cccc643f115c77cf6adcdfb17d1f1735ee6682 SHA512 c36e0e2600fc7c284562a323d396a03062cb6e8fa63c353e672be61e76d2ec5c7698485e3a370a57cf512db9e5ba6a68338fff2ab404d9fe67b1a468ed72638f
 DIST ghc-bin-8.10.1-i686-pc-linux-gnu.tbz2 123398571 BLAKE2B 3650f9dbaaa5af684abad589953bcef5b1684a91a4cc2695d0ef735536057bb031231fe3d73dd74bc38a199f0890ef91764b551e5e158c120affc0d7bc3175b7 SHA512 52cc172de08ef30d6e89384e86eda1b8bbdef2bbff526041eb47d85d77b70ab49314ac7f33f18b40864c16fa546256f1b4c7964e65aa5d3cfbb7f9cbec505dc9
 DIST ghc-bin-8.10.1-x86_64-pc-linux-gnu.tbz2 122227601 BLAKE2B 84340866c70044eb1444a70b0cbed6814808037b697db28f567d2b14bb791cbe7d9bf2a327cc47ae85ce3c4970ba039854b4a6df44eb85cdc18040c5a4d15f4f SHA512 81df9de95aec47d60ad8d699756ad323eb525c3a16536fac8c6717e1754272061bd8d7d70cd38f5c509a2fc323305333e4f898c9b6dc27645521bb29ee218bdb
+DIST ghc-bin-8.10.2-i686-pc-linux-gnu.tbz2 123683156 BLAKE2B a486076ea6e67f124c850e037be0e63a873181c3fd746f437861f7367a968e0df6723afc934c966432274a55936c0fe48a9a43a48199840b37636843da4caccc SHA512 29cc1703bbdbfcbef8aa2a5a563b83b0663970f5902a1fc70230515a128ef47e27a3a6df2b47a01009c3976b4936cf8e64e5da4dfdda0c1bcf73ab7ea5ac0b6d
 DIST ghc-bin-8.10.2-x86_64-pc-linux-gnu.tbz2 122818630 BLAKE2B 030a68e2aca0eb0a273e0d48a3e180d92b219b2d1826d1d58fa133d0a6cae1316b3ccceadb55a4fa5870f87c3df85df2998e7611b93dbc1fea592437748b2daf SHA512 23bf47ee45fae54a843de9e6991b67fccb79c14ad8d08eff9f38a68a3530496c8ce4bc8cae8a731bb690ddd6cd0bf36d6d5bf37eb68ddae8ce646a0bf3916d8f
+DIST ghc-bin-8.10.3-i686-pc-linux-gnu.tbz2 123802832 BLAKE2B a770dd43bee7a1d60fec2eb9aaa7de715eed01c19d9514e04678801827879977a5c91f5e191d026ca83aa5e5fc5f518593053b2e78b27b08df64b39058dbaec3 SHA512 f810432a56ddcd773e6118f038cdacd2f5e3a508d87bfa468ee861aef0cfc434ec5766a8a74360d8cec6cb9c664928290901c025496100e7c8465408635227f5
+DIST ghc-bin-8.10.3-x86_64-pc-linux-gnu.tbz2 122993247 BLAKE2B e3395ebc7e87b4ae8f66dbbd9441c214c4d9535e55bfb14f78ebb92d30b1e100efc4893b3cdc65564d47bd53a21cb30106572b3fce13be022946171112c3218e SHA512 2ea4295bcaf6e3fd0db54ba67465e979cd85d3370c6c49f2381478ae9824ad89df53d7d93ccf06bdff5f4849f14306c9f50c13e6f6ba45f79e5b8c13ad63ae4f
 DIST ghc-bin-8.2.1-i686-pc-linux-gnu.tbz2 96157437 BLAKE2B 2b9608845db8cea78db07209fa054b3b05085d5c3ac07cbe3de02a93c87fb0cff12b1820f08757221c59c8a0a9e7a5563c44266b181525d916825e5cf5bac34c SHA512 e891e76557fa61853e28829b8bedc4a6abb92954f90cc1ebcf22a13cc137556bbe9262e7398b7e1aedbabeb997916b008bf1561a52f16a569f3d58ea9404f41e
 DIST ghc-bin-8.2.1-x86_64-pc-linux-gnu.tbz2 97490496 BLAKE2B 3666ea70cb8b3645db071040d2069fe244042c11954b34e5d92aaa90132d2316c0ee8c176cd4e674772bea3b99df150404f62bd8745c046cdaf102ecf0a0fa54 SHA512 52630a185d0eab56bce0469a612a54109895bfee041ec362ced59a9b35ba3b9c185e86bc7dbf0a5939081d3626baa19fbb3306e36d1857530248a7b9bfc100bb
 DIST ghc-bin-8.2.2-i686-pc-linux-gnu.tbz2 96638908 BLAKE2B b470f838e77330969f162196b0f1035fa764f5d123687fbf67c14323280bfe55216af0e16f8b79c62f290905d96abc8bfafee650f8d27c81608853e78329b2c9 SHA512 15b1525890477539878385efc15ce5f1cf2f126cc785c42923be958cabe3298cebe73526a2370cf4c630124160a7ca0f0f9062aebbf035dce807a0374eaddd14
@@ -120,7 +125,8 @@ EBUILD ghc-7.10.3.ebuild 21673 BLAKE2B 9bddf804dbe6e8ee1ab8a21e8d31c50ed40c4b264
 EBUILD ghc-7.8.4.ebuild 19808 BLAKE2B ce921fa76b8f089e80a2766c46939e0b11bf1ba992aa23bb91cf1ad03adb7cae222c2690c4273dd4f9b47912d678bdd6484df2c1f26643b0221a0b70792c6de6 SHA512 ddb849f7682d5e9a98745227c99bfcd54555b0740802641ec444e3933f8ecb9a2f26e0a4c41d532eb7a6643d42d932028120424efcfac771ddf17bb7230e6294
 EBUILD ghc-8.0.2.ebuild 21608 BLAKE2B 7cfbdaf9fa3f2fc2771e48a32d235c50aad5f7db427df443d141c5b32cee52c80a216a0e856eae57bdbf1d115bd1e15056516412172b95757f7f904c15d2a26e SHA512 aa48e12a06818945fed9f4b13a25bd287d988b7fb8aedde7cb32ec35ffbf2f9780c4ea9285fe9b0ff71486467c4fcaf7f97f2455955d8373e7393902a85bf869
 EBUILD ghc-8.10.1.ebuild 25824 BLAKE2B 9c925cb8412805abe8c90c09dfabb50239bf48e76d5a10434f8dc076229230a08a46be0d093f809426997baa20adc96816558d32d120f61538060a34c3c5c8bb SHA512 78f98718c8a2de96932012be35b8bbb14e0eb64b2b76539d6e88978620d1812ae186f391b248e5493ffcaddc4f78f8c9445f890c29cec0bcf0d2cbf07c1a2c7d
-EBUILD ghc-8.10.2.ebuild 25851 BLAKE2B 6c598decf2e2e737cb2683189f867d6925bc33d3cd98bf410e85dea46010acf68dd17ede42af0687c7239b88d66ec4bc5ae89d15b8b862f21aae48e7d3b686eb SHA512 f2e2a9d90944ccf524e74be6f8a8120c75d37cdf805fde51359c693eb799d8d63301accffdf7cf27538535ff0b508f73a92bcbc9288421050ebcda7816297232
+EBUILD ghc-8.10.2.ebuild 25849 BLAKE2B 3711a29cbcdc6a88f0c8c28e17da3c1245ae7008c64ded69489fd43e85a5cef86e789874f3a63ba6760c4c64459954318fc97084da9856587a05a093fcc1971a SHA512 4de790bfcd4ac0757235ee481498c921e2d8c6c6768fe5f71b63447561524bd1f78c7d00e7d2a9a95a7a6d25046486398554b7336134b4e287ee25e3e2e72cd0
+EBUILD ghc-8.10.3.ebuild 25774 BLAKE2B 525fb5b481ce0cdabc9194fd967871a5aa9293975f8d409e5143a4393f9148cb32ef808a00fc0eaa9e646958a1468b25985aeb627ce65f2487ce8f75b50317d4 SHA512 e3c9b73a4b9474a8f218d8e8345446add117277a7aad96a4f07c4535d8f032555e2b1180ab254cd227c5697db3e2c73b201ce96b929ef177ea39faec455ff81b
 EBUILD ghc-8.2.1.ebuild 24841 BLAKE2B cefde1d2763d9e33b151a3a8ef1f9f5e8cdd308314301bd4ca5420a71c4237f9f8291ed37db88eae9d7d0606277fd3f4e45a15c31e17062e5acca3b989cd5331 SHA512 205a0ec31af711eb874fb2f356d2d3a64e0b5d8b8135ccc96eb9601e61765bf6ff4a4ceac027fef63994a8d17e76957c1ba498e5db9a1ba46ace819f82ec9d4b
 EBUILD ghc-8.2.2.ebuild 24810 BLAKE2B 57e39bfa9674dc7fd83fcb3cc80067c29a16f700bfde7027397fdd211679424aca00fd40f41df539f0c998b79b6a536f8d72320c58b134a5fcd55397347b0437 SHA512 fb4fcf882896d527db7ca442fad5f06b2e335a9b33a393d52d9b6cef7d5b186c7918ef2787b2489a8a649b8d65142a35ca93068cf48e89b12cea47ab2b4853f5
 EBUILD ghc-8.4.1.ebuild 24628 BLAKE2B a10b6221aea42908be8f79b8c932a7d1dfa756bffd2174d232b6c6a7e27f0e13e477ce262349b79c1042bd279e2e8db8b4a1700f8020543fca6dafa03fbb4472 SHA512 bc4a20691ff721281964b26d8bab83da9de663cd793f6457ed8ffe00a80aa34a65fa2caa133b198874a85b85ed6cb456d5a13c73233e014d1124202f4107afc9
diff --git a/dev-lang/ghc/ghc-8.10.2.ebuild b/dev-lang/ghc/ghc-8.10.2.ebuild
index 567a3225311e..8f5cdd922f31 100644
--- a/dev-lang/ghc/ghc-8.10.2.ebuild
+++ b/dev-lang/ghc/ghc-8.10.2.ebuild
@@ -33,7 +33,7 @@ arch_binaries="$arch_binaries amd64? ( https://slyfox.uni.cx/~slyfox/distfiles/g
 #arch_binaries="$arch_binaries ppc64? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-ppc64.tbz2 )"
 #arch_binaries="$arch_binaries ppc64? ( !big-endian? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-powerpc64le-unknown-linux-gnu.tbz2 ) )"
 #arch_binaries="$arch_binaries sparc? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-sparc.tbz2 )"
-#arch_binaries="$arch_binaries x86? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-i686-pc-linux-gnu.tbz2 )"
+arch_binaries="$arch_binaries x86? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-i686-pc-linux-gnu.tbz2 )"
 
 # various ports:
 #arch_binaries="$arch_binaries x86-fbsd? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-x86-fbsd.tbz2 )"
@@ -52,7 +52,7 @@ yet_binary() {
 		#	return 0
 		#	;;
 		#sparc) return 0 ;;
-		#x86) return 0 ;;
+		x86) return 0 ;;
 		*) return 1 ;;
 	esac
 }
diff --git a/dev-lang/ghc/ghc-8.10.3.ebuild b/dev-lang/ghc/ghc-8.10.3.ebuild
new file mode 100644
index 000000000000..1f1c51fca854
--- /dev/null
+++ b/dev-lang/ghc/ghc-8.10.3.ebuild
@@ -0,0 +1,797 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+# to make make a crosscompiler use crossdev and symlink ghc tree into
+# cross overlay. result would look like 'cross-sparc-unknown-linux-gnu/ghc'
+export CBUILD=${CBUILD:-${CHOST}}
+export CTARGET=${CTARGET:-${CHOST}}
+if [[ ${CTARGET} = ${CHOST} ]] ; then
+	if [[ ${CATEGORY/cross-} != ${CATEGORY} ]] ; then
+		export CTARGET=${CATEGORY/cross-}
+	fi
+fi
+
+inherit autotools bash-completion-r1 eutils flag-o-matic ghc-package
+inherit multilib multiprocessing pax-utils toolchain-funcs prefix
+inherit check-reqs
+DESCRIPTION="The Glasgow Haskell Compiler"
+HOMEPAGE="https://www.haskell.org/ghc/"
+
+# we don't have any binaries yet
+arch_binaries=""
+
+BIN_PV=${PV}
+# sorted!
+#arch_binaries="$arch_binaries alpha? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-alpha.tbz2 )"
+#arch_binaries="$arch_binaries arm? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-armv7a-hardfloat-linux-gnueabi.tbz2 )"
+#arch_binaries="$arch_binaries arm64? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-aarch64-unknown-linux-gnu.tbz2 )"
+arch_binaries="$arch_binaries amd64? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-x86_64-pc-linux-gnu.tbz2 )"
+#arch_binaries="$arch_binaries ia64?  ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-ia64-fixed-fiw.tbz2 )"
+#arch_binaries="$arch_binaries ppc? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-ppc.tbz2 )"
+#arch_binaries="$arch_binaries ppc64? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-ppc64.tbz2 )"
+#arch_binaries="$arch_binaries ppc64? ( !big-endian? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-powerpc64le-unknown-linux-gnu.tbz2 ) )"
+#arch_binaries="$arch_binaries sparc? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-sparc.tbz2 )"
+arch_binaries="$arch_binaries x86? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-i686-pc-linux-gnu.tbz2 )"
+
+# various ports:
+#arch_binaries="$arch_binaries x86-fbsd? ( https://slyfox.uni.cx/~slyfox/distfiles/ghc-bin-${PV}-x86-fbsd.tbz2 )"
+
+# 0 - yet
+yet_binary() {
+	case "${ARCH}" in
+		#alpha) return 0 ;;
+		#arm64) return 0 ;;
+		#arm) return 0 ;;
+		amd64) return 0 ;;
+		#ia64) return 0 ;;
+		#ppc) return 0 ;;
+		#ppc64)
+		#	use big-endian && return 0
+		#	return 0
+		#	;;
+		#sparc) return 0 ;;
+		x86) return 0 ;;
+		*) return 1 ;;
+	esac
+}
+
+GHC_PV=${PV}
+#GHC_PV=8.10.0.20200123 # uncomment only for -alpha, -beta, -rc ebuilds
+GHC_P=${PN}-${GHC_PV} # using ${P} is almost never correct
+
+SRC_URI="!binary? (
+	https://downloads.haskell.org/ghc/${PV/_/-}/${GHC_P}-src.tar.xz
+	test? ( https://downloads.haskell.org/ghc/${PV/_/-}/${GHC_P}-testsuite.tar.xz )
+)"
+S="${WORKDIR}"/${GHC_P}
+
+[[ -n $arch_binaries ]] && SRC_URI+=" !ghcbootstrap? ( $arch_binaries )"
+
+BUMP_LIBRARIES=(
+	# "hackage-name          hackage-version"
+)
+
+LICENSE="BSD"
+SLOT="0/${PV}"
+#KEYWORDS="~amd64 ~x86"
+IUSE="big-endian doc elfutils ghcbootstrap ghcmakebinary +gmp numa profile test"
+IUSE+=" binary"
+RESTRICT="!test? ( test )"
+
+RDEPEND="
+	>=dev-lang/perl-5.6.1
+	dev-libs/gmp:0=
+	sys-libs/ncurses:0=[unicode]
+	elfutils? ( dev-libs/elfutils )
+	!ghcmakebinary? ( dev-libs/libffi:= )
+	numa? ( sys-process/numactl )
+"
+
+# This set of dependencies is needed to run
+# prebuilt ghc. We specifically avoid ncurses
+# dependency with:
+#    utils/ghc-pkg_HC_OPTS += -DBOOTSTRAPPING
+PREBUILT_BINARY_DEPENDS="
+	!prefix? ( elibc_glibc? ( >=sys-libs/glibc-2.17 ) )
+"
+# This set of dependencies is needed to install
+# ghc[binary] in system. terminfo package is linked
+# against ncurses.
+PREBUILT_BINARY_RDEPENDS="${PREBUILT_BINARY_DEPENDS}
+	sys-libs/ncurses:0/6
+"
+
+RDEPEND+="binary? ( ${PREBUILT_BINARY_RDEPENDS} )"
+
+DEPEND="${RDEPEND}
+	doc? ( app-text/docbook-xml-dtd:4.2
+		app-text/docbook-xml-dtd:4.5
+		app-text/docbook-xsl-stylesheets
+		dev-python/sphinx
+		>=dev-libs/libxslt-1.1.2 )
+	!ghcbootstrap? ( ${PREBUILT_BINARY_DEPENDS} )"
+
+# we build binaries without profiling support
+REQUIRED_USE="
+	?? ( ghcbootstrap binary )
+	?? ( profile binary )
+"
+
+# haskell libraries built with cabal in configure mode, #515354
+QA_CONFIGURE_OPTIONS+=" --with-compiler --with-gcc"
+
+is_crosscompile() {
+	[[ ${CHOST} != ${CTARGET} ]]
+}
+
+is_native() {
+	[[ ${CHOST} == ${CBUILD} ]] && [[ ${CHOST} == ${CTARGET} ]]
+}
+
+if ! is_crosscompile; then
+	PDEPEND="!ghcbootstrap? ( >=app-admin/haskell-updater-1.2 )"
+fi
+
+# returns tool prefix for crosscompiler.
+# Example:
+#  CTARGET=armv7a-unknown-linux-gnueabi
+#  CHOST=x86_64-pc-linux-gnu
+#    "armv7a-unknown-linux-gnueabi-"
+#  CTARGET=${CHOST}
+#    ""
+# Used in tools and library prefix:
+#    "${ED}"/usr/bin/$(cross)haddock
+#    "${ED}/usr/$(get_libdir)/$(cross)${GHC_P}/package.conf.d"
+
+cross() {
+	if is_crosscompile; then
+		echo "${CTARGET}-"
+	else
+		echo ""
+	fi
+}
+
+append-ghc-cflags() {
+	local persistent compile assemble link
+	local flag ghcflag
+
+	for flag in $*; do
+		case ${flag} in
+			persistent)	persistent="yes";;
+			compile)	compile="yes";;
+			assemble)	assemble="yes";;
+			link)		link="yes";;
+			*)
+				[[ ${compile}  ]] && ghcflag="-optc${flag}"  CFLAGS+=" ${flag}" && GHC_FLAGS+=" ${ghcflag}" &&
+					[[ ${persistent} ]] && GHC_PERSISTENT_FLAGS+=" ${ghcflag}"
+				[[ ${assemble} ]] && ghcflag="-opta${flag}"  CFLAGS+=" ${flag}" && GHC_FLAGS+=" ${ghcflag}" &&
+					[[ ${persistent} ]] && GHC_PERSISTENT_FLAGS+=" ${ghcflag}"
+				[[ ${link}     ]] && ghcflag="-optl${flag}" LDFLAGS+=" ${flag}" && GHC_FLAGS+=" ${ghcflag}" &&
+					[[ ${persistent} ]] && GHC_PERSISTENT_FLAGS+=" ${ghcflag}"
+				;;
+		esac
+	done
+}
+
+# $1 - lib name (under libraries/)
+# $2 - lib version
+# example: bump_lib "transformers" "0.4.2.0"
+bump_lib() {
+	local pn=$1 pv=$2
+	local p=${pn}-${pv}
+	local f
+
+	einfo "Bumping ${pn} up to ${pv}"
+
+	for f in ghc.mk GNUmakefile; do
+		mv libraries/"${pn}"/$f "${WORKDIR}"/"${p}"/$f || die
+	done
+	mv libraries/"${pn}" "${WORKDIR}"/"${pn}".old || die
+	mv "${WORKDIR}"/"${p}" libraries/"${pn}" || die
+}
+
+update_SRC_URI() {
+	local p pn pv
+	for p in "${BUMP_LIBRARIES[@]}"; do
+		set -- $p
+		pn=$1 pv=$2
+
+		SRC_URI+=" https://hackage.haskell.org/package/${pn}-${pv}/${pn}-${pv}.tar.gz"
+	done
+}
+
+update_SRC_URI
+
+bump_libs() {
+	local p pn pv
+	for p in "${BUMP_LIBRARIES[@]}"; do
+		set -- $p
+		pn=$1 pv=$2
+
+		bump_lib "${pn}" "${pv}"
+	done
+}
+
+ghc_setup_cflags() {
+	# TODO: plumb CFLAGS and BUILD_CFLAGS to respective CONF_CC_OPTS_STAGE<N>
+	if ! is_native; then
+		export CFLAGS=${GHC_CFLAGS-"-O2 -pipe"}
+		export LDFLAGS=${GHC_LDFLAGS-"-Wl,-O1"}
+		einfo "Crosscompiling mode:"
+		einfo "   CHOST:   ${CHOST}"
+		einfo "   CTARGET: ${CTARGET}"
+		einfo "   CFLAGS:  ${CFLAGS}"
+		einfo "   LDFLAGS: ${LDFLAGS}"
+		einfo "   prefix: $(cross)"
+		return
+	fi
+	# We need to be very careful with the CFLAGS we ask ghc to pass through to
+	# gcc. There are plenty of flags which will make gcc produce output that
+	# breaks ghc in various ways. The main ones we want to pass through are
+	# -mcpu / -march flags. These are important for arches like alpha & sparc.
+	# We also use these CFLAGS for building the C parts of ghc, ie the rts.
+	strip-flags
+	strip-unsupported-flags
+
+	# Cmm can't parse line numbers #482086
+	replace-flags -ggdb[3-9] -ggdb2
+
+	GHC_FLAGS=""
+	GHC_PERSISTENT_FLAGS=""
+	for flag in ${CFLAGS}; do
+		case ${flag} in
+
+			# Ignore extra optimisation (ghc passes -O to gcc anyway)
+			# -O2 and above break on too many systems
+			-O*) ;;
+
+			# Arch and ABI flags are what we're really after
+			-m*) append-ghc-cflags compile assemble ${flag};;
+
+			# Sometimes it's handy to see backtrace of RTS
+			# to get an idea what happens there
+			-g*) append-ghc-cflags compile ${flag};;
+
+			# Ignore all other flags, including all -f* flags
+		esac
+	done
+
+	for flag in ${LDFLAGS}; do
+		append-ghc-cflags link ${flag}
+	done
+
+	# GHC uses ${CBUILD}-gcc, ${CHOST}-gcc and ${CTARGET}-gcc at a single build.
+	# Skip any gentoo-specific tweaks for cross-case to avoid passing unsupported
+	# options to gcc.
+	if is_native; then
+		# prevent from failing to build unregisterised ghc:
+		# https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg171602.html
+		use ppc64 && append-ghc-cflags persistent compile -mminimal-toc
+	fi
+}
+
+# substitutes string $1 to $2 in files $3 $4 ...
+relocate_path() {
+	local from=$1
+	local   to=$2
+	shift 2
+	local file=
+	for file in "$@"
+	do
+		sed -i -e "s|$from|$to|g" \
+			"$file" || die "path relocation failed for '$file'"
+	done
+}
+
+# changes hardcoded ghc paths and updates package index
+# $1 - new absolute root path
+relocate_ghc() {
+	local to=$1 ghc_v=${BIN_PV}
+
+	# libdir for prebuilt binary and for current system may mismatch
+	# It does for prefix installation for example: bug #476998
+	local bin_ghc_prefix=${WORKDIR}/usr
+	local bin_libpath=$(echo "${bin_ghc_prefix}"/lib*)
+	local bin_libdir=${bin_libpath#${bin_ghc_prefix}/}
+
+	# backup original script to use it later after relocation
+	local gp_back="${T}/ghc-pkg-${ghc_v}-orig"
+	cp "${WORKDIR}/usr/bin/ghc-pkg-${ghc_v}" "$gp_back" || die "unable to backup ghc-pkg wrapper"
+
+	if [[ ${bin_libdir} != $(get_libdir) ]]; then
+		einfo "Relocating '${bin_libdir}' to '$(get_libdir)' (bug #476998)"
+		# moving the dir itself is not strictly needed
+		# but then USE=binary would result in installing
+		# in '${bin_libdir}'
+		mv "${bin_ghc_prefix}/${bin_libdir}" "${bin_ghc_prefix}/$(get_libdir)" || die
+
+		relocate_path "/usr/${bin_libdir}" "/usr/$(get_libdir)" \
+			"${WORKDIR}/usr/bin/ghc-${ghc_v}" \
+			"${WORKDIR}/usr/bin/ghci-${ghc_v}" \
+			"${WORKDIR}/usr/bin/ghc-pkg-${ghc_v}" \
+			"${WORKDIR}/usr/bin/hsc2hs" \
+			"${WORKDIR}/usr/bin/runghc-${ghc_v}" \
+			"$gp_back" \
+			"${WORKDIR}/usr/$(get_libdir)/${PN}-${ghc_v}/package.conf.d/"*
+	fi
+
+	# Relocate from /usr to ${EPREFIX}/usr
+	relocate_path "/usr" "${to}/usr" \
+		"${WORKDIR}/usr/bin/ghc-${ghc_v}" \
+		"${WORKDIR}/usr/bin/ghci-${ghc_v}" \
+		"${WORKDIR}/usr/bin/ghc-pkg-${ghc_v}" \
+		"${WORKDIR}/usr/bin/haddock-ghc-${ghc_v}" \
+		"${WORKDIR}/usr/bin/hp2ps" \
+		"${WORKDIR}/usr/bin/hpc" \
+		"${WORKDIR}/usr/bin/hsc2hs" \
+		"${WORKDIR}/usr/bin/runghc-${ghc_v}" \
+		"${WORKDIR}/usr/$(get_libdir)/${PN}-${ghc_v}/package.conf.d/"*
+
+	# this one we will use to regenerate cache
+	# so it should point to current tree location
+	relocate_path "/usr" "${WORKDIR}/usr" "$gp_back"
+
+	if use prefix; then
+		hprefixify "${bin_libpath}"/${PN}*/settings
+	fi
+
+	# regenerate the binary package cache
+	"$gp_back" recache || die "failed to update cache after relocation"
+	rm "$gp_back"
+}
+
+ghc-check-reqs() {
+	# These are pessimistic values (slightly bigger than worst-case)
+	# Worst case is UNREG USE=profile ia64. See bug #611866 for some
+	# numbers on various arches.
+	CHECKREQS_DISK_BUILD=8G
+	CHECKREQS_DISK_USR=2G
+	# USE=binary roughly takes
+	use binary && CHECKREQS_DISK_BUILD=4G
+
+	"$@"
+}
+
+pkg_pretend() {
+	ghc-check-reqs check-reqs_pkg_pretend
+}
+
+pkg_setup() {
+	ghc-check-reqs check-reqs_pkg_setup
+
+	# quiet portage about prebuilt binaries
+	use binary && QA_PREBUILT="*"
+
+	[[ ${MERGE_TYPE} == binary ]] && return
+
+	if use ghcbootstrap; then
+		ewarn "You requested ghc bootstrapping, this is usually only used"
+		ewarn "by Gentoo developers to make binary .tbz2 packages."
+
+		[[ -z $(type -P ghc) ]] && \
+			die "Could not find a ghc to bootstrap with."
+	else
+		if ! yet_binary; then
+			eerror "Please try emerging with USE=ghcbootstrap and report build"
+			eerror "sucess or failure to the haskell team (haskell@gentoo.org)"
+			die "No binary available for '${ARCH}' arch yet, USE=ghcbootstrap"
+		fi
+	fi
+}
+
+src_unpack() {
+	# Create the ${S} dir if we're using the binary version
+	use binary && mkdir "${S}"
+
+	# the Solaris and Darwin binaries from ghc (maeder) need to be
+	# unpacked separately, so prevent them from being unpacked
+	local ONLYA=${A}
+	case ${CHOST} in
+		*-darwin* | *-solaris*)  ONLYA=${GHC_P}-src.tar.xz  ;;
+	esac
+	unpack ${ONLYA}
+}
+
+src_prepare() {
+	ghc_setup_cflags
+
+	if ! use ghcbootstrap && [[ ${CHOST} != *-darwin* && ${CHOST} != *-solaris* ]]; then
+		# Modify the wrapper script from the binary tarball to use GHC_PERSISTENT_FLAGS.
+		# See bug #313635.
+		sed -i -e "s|\"\$topdir\"|\"\$topdir\" ${GHC_PERSISTENT_FLAGS}|" \
+			"${WORKDIR}/usr/bin/ghc-${BIN_PV}"
+
+		# allow hardened users use vanilla binary to bootstrap ghc
+		# ghci uses mmap with rwx protection at it implements dynamic
+		# linking on it's own (bug #299709)
+		pax-mark -m "${WORKDIR}/usr/$(get_libdir)/${PN}-${BIN_PV}/bin/ghc"
+	fi
+
+	if use binary; then
+		if use prefix; then
+			relocate_ghc "${EPREFIX}"
+		fi
+
+		# Move unpacked files to the expected place
+		mv "${WORKDIR}/usr" "${S}"
+		eapply_user
+	else
+		if ! use ghcbootstrap; then
+			case ${CHOST} in
+				*-darwin* | *-solaris*)
+				# UPDATE ME for ghc-7
+				mkdir "${WORKDIR}"/ghc-bin-installer || die
+				pushd "${WORKDIR}"/ghc-bin-installer > /dev/null || die
+				use sparc-solaris && unpack ghc-6.10.4-sparc-sun-solaris2.tar.bz2
+				use x86-solaris && unpack ghc-7.0.3-i386-unknown-solaris2.tar.bz2
+				use x86-macos && unpack ghc-7.4.1-i386-apple-darwin.tar.bz2
+				use x64-macos && unpack ghc-7.4.1-x86_64-apple-darwin.tar.bz2
+				popd > /dev/null
+
+				pushd "${WORKDIR}"/ghc-bin-installer/ghc-[67].?*.? > /dev/null || die
+				# fix the binaries so they run, on Solaris we need an
+				# LD_LIBRARY_PATH which has our prefix libdirs, on
+				# Darwin we need to replace the frameworks with our libs
+				# from the prefix fix before installation, because some
+				# of the tools are actually used during configure/make
+				if [[ ${CHOST} == *-solaris* ]] ; then
+					export LD_LIBRARY_PATH="${EPREFIX}/$(get_libdir):${EPREFIX}/usr/$(get_libdir):${LD_LIBRARY_PATH}"
+				elif [[ ${CHOST} == *-darwin* ]] ; then
+					local readline_framework=GNUreadline.framework/GNUreadline
+					local gmp_framework=/opt/local/lib/libgmp.10.dylib
+					local ncurses_file=/opt/local/lib/libncurses.5.dylib
+					for binary in $(scanmacho -BRE MH_EXECUTE -F '%F' .) ; do
+						install_name_tool -change \
+							${readline_framework} \
+							"${EPREFIX}"/lib/libreadline.dylib \
+							${binary} || die
+						install_name_tool -change \
+							${gmp_framework} \
+							"${EPREFIX}"/usr/lib/libgmp.dylib \
+							${binary} || die
+						install_name_tool -change \
+							${ncurses_file} \
+							"${EPREFIX}"/usr/lib/libncurses.dylib \
+							${binary} || die
+					done
+					# we don't do frameworks!
+					sed -i \
+						-e 's/\(frameworks = \)\["GMP"\]/\1[]/g' \
+						-e 's/\(extraLibraries = \)\["m"\]/\1["m","gmp"]/g' \
+						rts/package.conf.in || die
+				fi
+
+				# it is autoconf, but we really don't want to give it too
+				# many arguments, in fact we do the make in-place anyway
+				./configure --prefix="${WORKDIR}"/usr || die
+				make install || die
+				popd > /dev/null
+				;;
+				*)
+				relocate_ghc "${WORKDIR}"
+				;;
+			esac
+		fi
+
+		sed -i -e "s|\"\$topdir\"|\"\$topdir\" ${GHC_PERSISTENT_FLAGS}|" \
+			"${S}/ghc/ghc.wrapper"
+
+		cd "${S}" # otherwise eapply will break
+
+		eapply "${FILESDIR}"/${PN}-7.0.4-CHOST-prefix.patch
+		eapply "${FILESDIR}"/${PN}-8.2.1-darwin.patch
+		eapply "${FILESDIR}"/${PN}-7.8.3-prim-lm.patch
+		eapply "${FILESDIR}"/${PN}-8.8.1-revert-CPP.patch
+		eapply "${FILESDIR}"/${PN}-8.10.1-allow-cross-bootstrap.patch
+
+		# a bunch of crosscompiler patches
+		# needs newer version:
+		#eapply "${FILESDIR}"/${PN}-8.2.1_rc1-hp2ps-cross.patch
+
+		# mingw32 target
+		pushd "${S}/libraries/Win32"
+			eapply "${FILESDIR}"/${PN}-8.2.1_rc1-win32-cross-2-hack.patch # bad workaround
+		popd
+
+		bump_libs
+
+		eapply_user
+		# as we have changed the build system
+		eautoreconf
+	fi
+}
+
+src_configure() {
+	if ! use binary; then
+		# initialize build.mk
+		echo '# Gentoo changes' > mk/build.mk
+
+		# Put docs into the right place, ie /usr/share/doc/ghc-${GHC_PV}
+		echo "docdir = ${EPREFIX}/usr/share/doc/$(cross)${P}" >> mk/build.mk
+		echo "htmldir = ${EPREFIX}/usr/share/doc/$(cross)${P}" >> mk/build.mk
+
+		# We also need to use the GHC_FLAGS flags when building ghc itself
+		echo "SRC_HC_OPTS+=${HCFLAGS} ${GHC_FLAGS}" >> mk/build.mk
+		echo "SRC_CC_OPTS+=${CFLAGS}" >> mk/build.mk
+		echo "SRC_LD_OPTS+=${LDFLAGS}" >> mk/build.mk
+		# Speed up initial Cabal bootstrap
+		echo "utils/ghc-cabal_dist_EXTRA_HC_OPTS+=$(ghc-make-args)" >> mk/build.mk
+
+		# We can't depend on haddock except when bootstrapping when we
+		# must build docs and include them into the binary .tbz2 package
+		# app-text/dblatex is not in portage, can not build PDF or PS
+		echo "BUILD_SPHINX_PDF  = NO"  >> mk/build.mk
+		echo "BUILD_SPHINX_HTML = $(usex doc YES NO)" >> mk/build.mk
+		echo "BUILD_MAN = $(usex doc YES NO)" >> mk/build.mk
+
+		# this controls presence on 'xhtml' and 'haddock' in final install
+		echo "HADDOCK_DOCS       = YES" >> mk/build.mk
+
+		# not used outside of ghc's test
+		if [[ -n ${GHC_BUILD_DPH} ]]; then
+				echo "BUILD_DPH = YES" >> mk/build.mk
+			else
+				echo "BUILD_DPH = NO" >> mk/build.mk
+		fi
+
+		# Any non-native build has to skip as it needs
+		# target haddock binary to be runnabine.
+		if ! is_native; then
+			# disable docs generation as it requires running stage2
+			echo "HADDOCK_DOCS=NO" >> mk/build.mk
+			echo "BUILD_SPHINX_HTML=NO" >> mk/build.mk
+			echo "BUILD_SPHINX_PDF=NO" >> mk/build.mk
+		fi
+
+		if is_crosscompile; then
+			# Install ghc-stage1 crosscompiler instead of
+			# ghc-stage2 cross-built compiler.
+			echo "Stage1Only=YES" >> mk/build.mk
+		fi
+
+		# allows overriding build flavours for libraries:
+		# v   - vanilla (static libs)
+		# p   - profiled
+		# dyn - shared libraries
+		# example: GHC_LIBRARY_WAYS="v dyn"
+		if [[ -n ${GHC_LIBRARY_WAYS} ]]; then
+			echo "GhcLibWays=${GHC_LIBRARY_WAYS}" >> mk/build.mk
+		fi
+		echo "BUILD_PROF_LIBS = $(usex profile YES NO)" >> mk/build.mk
+
+		# Get ghc from the unpacked binary .tbz2
+		# except when bootstrapping we just pick ghc up off the path
+		if ! use ghcbootstrap; then
+			export PATH="${WORKDIR}/usr/bin:${PATH}"
+		fi
+
+		echo "INTEGER_LIBRARY = $(usex gmp integer-gmp integer-simple)" >> mk/build.mk
+
+		# don't strip anything. Very useful when stage2 SIGSEGVs on you
+		echo "STRIP_CMD = :" >> mk/build.mk
+
+		local econf_args=()
+
+		# GHC embeds toolchain it was built by and uses it later.
+		# Don't allow things like ccache or versioned binary slip.
+		# We use stable thing across gcc upgrades.
+		# User can use EXTRA_ECONF=CC=... to override this default.
+		econf_args+=(
+			AR=${CTARGET}-ar
+			CC=${CTARGET}-gcc
+			# these should be inferred by GHC but ghc defaults
+			# to using bundled tools on windows.
+			Windres=${CTARGET}-windres
+			DllWrap=${CTARGET}-dllwrap
+			# we set the linker explicitly below
+			--disable-ld-override
+		)
+		case ${CTARGET} in
+			arm*)
+				# ld.bfd-2.28 does not work for ghc. Force ld.gold
+				# instead. This should be removed once gentoo gets
+				# a fix for R_ARM_COPY bug: https://sourceware.org/PR16177
+				econf_args+=(LD=${CTARGET}-ld.gold)
+			;;
+			sparc*)
+				# ld.gold-2.28 does not work for ghc. Force ld.bfd
+				# instead. This should be removed once gentoo gets
+				# a fix for missing --no-relax support bug:
+				# https://sourceware.org/ml/binutils/2017-07/msg00183.html
+				econf_args+=(LD=${CTARGET}-ld.bfd)
+			;;
+			*)
+				econf_args+=(LD=${CTARGET}-ld)
+		esac
+
+		if [[ ${CBUILD} != ${CHOST} ]]; then
+			# GHC bug: ghc claims not to support cross-building.
+			# It does, but does not distinct --host= value
+			# for stage1 and stage2 compiler.
+			econf_args+=(--host=${CBUILD})
+		fi
+
+		if use ghcmakebinary; then
+			# When building booting libary we are trying to
+			# bundle or restrict most of external depends
+			# with unstable ABI:
+			#  - embed libffi (default GHC behaviour)
+			#  - disable ncurses support for ghci (via haskeline)
+			#    https://bugs.gentoo.org/557478
+			#  - disable ncurses support for ghc-pkg
+			echo "libraries/haskeline_CONFIGURE_OPTS += --flag=-terminfo" >> mk/build.mk
+			echo "utils/ghc-pkg_HC_OPTS += -DBOOTSTRAPPING" >> mk/build.mk
+		elif is_native; then
+			# using ${GTARGET}'s libffi is not supported yet:
+			# GHC embeds full path for ffi includes without /usr/${CTARGET} account.
+			econf_args+=(--with-system-libffi)
+			econf_args+=(--with-ffi-includes=$($(tc-getPKG_CONFIG) libffi --cflags-only-I | sed -e 's@^-I@@'))
+		fi
+
+		einfo "Final mk/build.mk:"
+		cat mk/build.mk || die
+
+		econf ${econf_args[@]} \
+			--enable-bootstrap-with-devel-snapshot \
+			$(use_enable elfutils dwarf-unwind) \
+			$(use_enable numa)
+
+		if [[ ${PV} == *9999* ]]; then
+			GHC_PV="$(grep 'S\[\"PACKAGE_VERSION\"\]' config.status | sed -e 's@^.*=\"\(.*\)\"@\1@')"
+			GHC_P=${PN}-${GHC_PV}
+		fi
+	fi # ! use binary
+}
+
+src_compile() {
+	if ! use binary; then
+		# Stage1Only crosscompiler does not build stage2
+		if ! is_crosscompile; then
+			# 1. build/pax-mark compiler binary first
+			emake ghc/stage2/build/tmp/ghc-stage2
+			# 2. pax-mark (bug #516430)
+			pax-mark -m ghc/stage2/build/tmp/ghc-stage2
+			# 2. build/pax-mark haddock using ghc-stage2
+			if is_native; then
+				# non-native build does not build haddock
+				# due to HADDOCK_DOCS=NO, but it could.
+				emake utils/haddock/dist/build/tmp/haddock
+				pax-mark -m utils/haddock/dist/build/tmp/haddock
+			fi
+		fi
+		# 3. and then all the rest
+		emake all
+	fi # ! use binary
+}
+
+src_test() {
+	# TODO: deal with:
+	#    - sandbox (pollutes environment)
+	#    - extra packages (to extend testsuite coverage)
+	# bits are taken from 'validate'
+	local make_test_target='test' # can be fulltest
+	# not 'emake' as testsuite uses '$MAKE' without jobserver available
+	make $make_test_target stage=2 THREADS=$(makeopts_jobs)
+}
+
+src_install() {
+	if use binary; then
+		use prefix && mkdir -p "${ED}"
+		mv "${S}/usr" "${ED}"
+	else
+		[[ -f VERSION ]] || emake VERSION
+
+		# -j1 due to a rare race in install script:
+		#    make --no-print-directory -f ghc.mk phase=final install
+		#    /usr/lib/portage/python3.4/ebuild-helpers/xattr/install -c -m 755 \
+		#        -d "/tmp/portage-tmpdir/portage/cross-armv7a-unknown-linux-gnueabi/ghc-9999/image/usr/lib64/armv7a-unknown-linux-gnueabi-ghc-8.3.20170404/include"
+		#    /usr/lib/portage/python3.4/ebuild-helpers/xattr/install -c -m 644  utils/hsc2hs/template-hsc.h \
+		#           "/tmp/portage-tmpdir/portage/cross-armv7a-unknown-linux-gnueabi/ghc-9999/image/usr/lib64/armv7a-unknown-linux-gnueabi-ghc-8.3.20170404"
+		#    /usr/bin/install: cannot create regular file \
+		#           '/tmp/portage-tmpdir/portage/cross-armv7a-unknown-linux-gnueabi/ghc-9999/image/usr/lib64/armv7a-unknown-linux-gnueabi-ghc-8.3.20170404': No such file or directory
+		emake -j1 install DESTDIR="${D}"
+
+		# Skip for cross-targets as they all share target location:
+		# /usr/share/doc/ghc-9999/
+		if ! is_crosscompile; then
+			dodoc "distrib/README" "LICENSE" "VERSION"
+		fi
+
+		# rename ghc-shipped files to avoid collision
+		# of external packages. Motivating example:
+		#  user had installed:
+		#      dev-lang/ghc-7.8.4-r0 (with transformers-0.3.0.0)
+		#      dev-haskell/transformers-0.4.2.0
+		#  then user tried to update to
+		#      dev-lang/ghc-7.8.4-r1 (with transformers-0.4.2.0)
+		#  this will lead to single .conf file collision.
+		local shipped_conf renamed_conf
+		local package_confdir="${ED}/usr/$(get_libdir)/$(cross)${GHC_P}/package.conf.d"
+		for shipped_conf in "${package_confdir}"/*.conf; do
+			# rename 'pkg-ver-id.conf' to 'pkg-ver-id-gentoo-${PF}.conf'
+			renamed_conf=${shipped_conf%.conf}-gentoo-${PF}.conf
+			mv "${shipped_conf}" "${renamed_conf}" || die
+		done
+
+		# remove link, but leave 'haddock-${GHC_P}'
+		rm -f "${ED}"/usr/bin/$(cross)haddock
+
+		if ! is_crosscompile; then
+			newbashcomp "${FILESDIR}"/ghc-bash-completion ghc-pkg
+			newbashcomp utils/completion/ghc.bash         ghc
+		fi
+	fi
+
+	# path to the package.cache
+	local package_confdir="${ED}/usr/$(get_libdir)/$(cross)${GHC_P}/package.conf.d"
+	PKGCACHE="${package_confdir}"/package.cache
+	# copy the package.conf.d, including timestamp, save it so we can help
+	# users that have a broken package.conf.d
+	cp -pR "${package_confdir}"{,.initial} || die "failed to backup intial package.conf.d"
+
+	# copy the package.conf, including timestamp, save it so we later can put it
+	# back before uninstalling, or when upgrading.
+	cp -p "${PKGCACHE}"{,.shipped} \
+		|| die "failed to copy package.conf.d/package.cache"
+
+	if is_crosscompile; then
+		# When we build a cross-compiler the layout is the following:
+		#     usr/lib/${CTARGET}-ghc-${VER}/ contains target libraries
+		# but
+		#     usr/lib/${CTARGET}-ghc-${VER}/bin/ directory
+		# containst host binaries (modulo bugs).
+
+		# Portage's stripping mechanism does not skip stripping
+		# foreign binaries. This frequently causes binaries to be
+		# broken.
+		#
+		# Thus below we disable stripping of target libraries and allow
+		# stripping hosts executables.
+		dostrip -x "/usr/$(get_libdir)/$(cross)${GHC_P}"
+		dostrip    "/usr/$(get_libdir)/$(cross)${GHC_P}/bin"
+	fi
+}
+
+pkg_preinst() {
+	# have we got an earlier version of ghc installed?
+	if has_version "<${CATEGORY}/${PF}"; then
+		haskell_updater_warn="1"
+	fi
+}
+
+pkg_postinst() {
+	ghc-reregister
+
+	# path to the package.cache
+	PKGCACHE="${EROOT}/usr/$(get_libdir)/$(cross)${GHC_P}/package.conf.d/package.cache"
+
+	# give the cache a new timestamp, it must be as recent as
+	# the package.conf.d directory.
+	touch "${PKGCACHE}"
+
+	if [[ "${haskell_updater_warn}" == "1" ]]; then
+		ewarn
+		ewarn "\e[1;31m************************************************************************\e[0m"
+		ewarn
+		ewarn "You have just upgraded from an older version of GHC."
+		ewarn "You may have to run"
+		ewarn "      'haskell-updater'"
+		ewarn "to rebuild all ghc-based Haskell libraries."
+		ewarn
+		ewarn "\e[1;31m************************************************************************\e[0m"
+		ewarn
+	fi
+}
+
+pkg_prerm() {
+	PKGCACHE="${EROOT}/usr/$(get_libdir)/$(cross)${GHC_P}/package.conf.d/package.cache"
+	rm -rf "${PKGCACHE}"
+
+	cp -p "${PKGCACHE}"{.shipped,}
+}
+
+pkg_postrm() {
+	ghc-package_pkg_postrm
+}