gentoo resync : 31.05.2021

12 files changed, 228 insertions, 634 deletions

diff --git a/sci-mathematics/singular/Manifest b/sci-mathematics/singular/Manifest
index b232d12bdf2d..731216862618 100644
--- a/sci-mathematics/singular/Manifest
+++ b/sci-mathematics/singular/Manifest
@@ -1,17 +1,11 @@
 AUX 60singular-gentoo.el 298 BLAKE2B 5b42e2083037e2ff2ace5597ddebfb079920e09ed91d1a359e058fc654c6778456174d6cee9242f7fcaf81bf1464f47f43604b9e4eb298f051c6a4daba4630ca SHA512 4c17a25d91c085e12f26441fcde858e61bf191bd7d9dcf63ff5b5a1dce1d63e3f7c4f78ce8afa4f2359ad4ba6eb51f3e224ae6c502b18f5f7a76738534337431
-AUX singular-4.0.0-fix-omalloc-ar-detection.patch 484 BLAKE2B 801f773c434ad35a18f80be4453a70540438054fca6fe7e8ba58520d8e17c47da51669d951989c161049d451d111a57d2e6f365ef4ee523829e056fdc2c4c72f SHA512 4f74b1d436c17efa3872a6b24e56c691220813a3cc2debeb19caa5dd6bf0e3c39af32e43e3d7afb5af40f985ec56377128185b9138dfcf77a04618ba444ea619
-AUX singular-4.0.2-ntl8-compat.patch 1149 BLAKE2B ed7ca37745eb37dd6493dfc4b531c3b9dc7390bc246a5ac08480ab188746883f3320031b14f9fe542c5889a56fa6c5c93a4b3f23e581cfb11cc308caa4dfa868 SHA512 178f0130cd6a606d6c93f5cc42dfe92782a16cc6b3d0e2695ce16d2115f70e502f702e8e72fd5d3b61b1bb5b3f4038a4fbf6277418b3f0bf89cae7939d5ed606
-AUX singular-4.0.3-fix-destdir.patch 992 BLAKE2B ffde08cf18fe22214acee27877090d7a7e3f458fac2f6f928cc822995c77579e705acb87b3bac4a9f84806bb3ce84eacfe7b51db3b51c94121c92b5335e207bb SHA512 6b0496d1901c51da66d75fde1b980333df8b1e03572f49ecd56f3f3c67d3af1b08527c7b764aa3b62b0296b97aaaa861d257a97a4370b3600b2cd7ffb9580936
-AUX singular-4.0.3-fix-resources-name.patch 10175 BLAKE2B 54b576ab1d5db6a1d2aca507472e3eba0a4c02507c82de7dfd1d6ad069c5225c8c2957c9258f57f686b5fa845427d95cbb350bf4bb151ee13e5b4eaa8e900c17 SHA512 29c43d97598c647ac2754ed897411638f0141b60de590a53fc3f476cd1d627b270ecab29e16923b00757d8218d680c6b837070fa6899e4c770243bf71e86a09f
 AUX singular-4.0.3-gfan_linking.patch 705 BLAKE2B 9ec4dafad75885132d4f6bea65f945a5f6f383e39f3d375a70e12a86db983cc3d64e14b148db07c9577a46d2a8f534f43988d264fdb43dc61b247843af5f438d SHA512 4c2ab45f449f9c3d79165e1c9a0634fb08a9cd34dbc898e0e172409f6914ccd6e1c4e1719ccf0b36e591b4840e8cba08576ac1b57fadd08f8344b45e1af40d89
 AUX singular-4.1.3-doc_install.patch 2834 BLAKE2B d8e35169534ed9087fc1faf6029a111819d2198d5fa61134ba083920604f93a346e6f274da02361b0c03ba05fea2c4f1b23fe2af8a46d8e6705cf4ccd025751a SHA512 36d3b6f2d90479ae508c7771d4fd7724ada5f5102ece78c4d5bc113c23848973706f19a9e1467de322ecee29712dc1d915f41b491bef23529a43380ff69d84ef
+AUX singular-4.2.0-doc_install.patch 3390 BLAKE2B 753101890dadfdbd5c0e53a7e2c94572a02d43f0370f861ea164b4db38daf010ec30c8b939f030998f3b18e49f397b4a379991ad91f9edc83c26bc06354fe53f SHA512 8a6e95ca94faada5b9d4c568e1e2f2fa67ff34b514eba7c9d9f8b0701a1e1eb56d26d7740818149f534b28e6c98c08205d429297efaa905549def320573c7a26
+AUX singular-4.2.0-gfan_linking.patch 1849 BLAKE2B 11a4ed33cab5265a3b5650270511ff38cd36422fea07ad0ae5f229761e31229d8ed61fa278d47b1326abc0919c85522d80f8085d3f2019463ae50fa48589c837 SHA512 bc1635cc592c5b624c87bfffbafb8d1c1cc094e2e629027c89255552ec15918bbdc3275605f8612cc418d4efc58efa46465d286cd9118cdf06a079ba40ff52ae
 AUX singular-4.2.0-no-static.patch 2644 BLAKE2B 466705130179efe13cd4bdccb09e0bc2a5a0efaf36536009054235f6a44af932c359cee366eef860235739c480fea84e9ca48947597d2c3aaf2e26bdb3fada88 SHA512 53dd7045d717f62817b0fd03963a8cf2ba4e88387b89e854a1cc6a2817bf975fd7e16852e948b64182d049b8c184459d4e071bbb5f8c6ca5998c4c1b964deef5
-DIST singular-4.0.2-share.tar.gz 8789162 BLAKE2B 357a68f68cc0508e4e197427c56232da60412a8380045ac594cbe313bf6a403068d1724f637d47de44e66baf34c74fa5c4ee622721c5bbd67764e65e66c8583a SHA512 068827df04a5d1b4407dbaab1296d0120071dc109b749037b02263d51906852a5c2c1ef321733953a181c2d3d0fe799c197ef0af3b9341810ecf31a5324e0a25
-DIST singular-4.0.2.tar.gz 8635172 BLAKE2B 5f565bf14677d8414300d7a5602aa96c8cef7e863fd858083fe4561742b545d74a5fc4de95ef0c63acf4f78c66405bac7ba77a954e42b2e87a6da608e4732bcd SHA512 4543a45839ce8adc45e3b2edd84a6e398b7ba157da1eda050dbce2a8b20333eb0c63433e3e7eaf59d76bf6bcb65c1b1611bfc08c25fd493c88e2f06624898e3d
-DIST singular-4.0.3-share.tar.gz 6633256 BLAKE2B c137b72aaa0926eb006624e03fe938678acb94a41da525de1ca4f7711985d253926788b550d2d98b8def15fb0cb60b2527c1c04566a29a28135fcb1a70246025 SHA512 5f8ae4ecd22a3470e5f00393e03079936d7ed334f44ae056ed1eb1719054afc4371b03e920b598033605600c843dc39cb6b01308505323e2c084dfe1f7a1b94a
-DIST singular-4.0.3.tar.gz 12615042 BLAKE2B b3c63434974bb8b5fdef86cbcbe73b76a47503b28dcae6bfc6e4210e1ab1c14224ac0f6eeefa9d8004450f6d9a26843368a9b2ea16bca68bf1215ce33e83df0d SHA512 781227997c510829b02c969259d627572c0b62aa152c9ef623ff27de5b2df0c8e024f086740b89ca8f96b6e3f7def04f8d62ca79adb199d6249ade9b8cbb06ab
 DIST singular-4.2.0p1.tar.gz 14155171 BLAKE2B 444553f87d7ca8d6a62e4519c9857a6892757e92285df7c3b686913a9b51c9ae8d802c41382b0b2b6e37dc2dc496d4a10f262c98407470219cdce131e8baf127 SHA512 2ecd8940c9e8d70a93dbdb4df6da313c00151e5cb959f8eed5856e8df99089b5a03e514fbcdc70903c77df8b59fa7ef9f3b134f1de510b795fa6ea0341089bd8
-EBUILD singular-4.0.2.ebuild 3564 BLAKE2B b24e5fe11a2b8d3b400663c5950f9a7d9342db159c53c0ff9a703f1c9ee929d15d7ebde73a4ee303dba99f4d181b118b37c1a3529e8dcd410e98a3296ab2ae4f SHA512 ef838c4b4ed39e442ec90eafa0783a9b2d8526d2da37eeae89050a0c6507f7d813dfbe07a2ebd092fd097573c6607415d8a21dfa044573f3bad79919c15b425b
-EBUILD singular-4.0.3.ebuild 2499 BLAKE2B 5d17c7d35ec1ba6073e7d4703134fe96b4f8d59ae34922947dbc0f8f2aa6ddf52535e766aa62b1f66be5ef92c9dab5b458f02266239f8ba1013920e59c73ae8b SHA512 bfb148756c9f381ccdd6e2374971c0e1e589e7739b473a86826a35d6e15e0d724fcb76cf672896dbf9f562f033d2752bdbe1bc8521cd276b1fc6358e0014ce90
-EBUILD singular-4.2.0_p1.ebuild 2261 BLAKE2B 5c3e9208ffc6bbe2e0e1be3ef26a2ac30c2b859630d9354a219575517293ca74608cdadeee539544c308ff4e495d778eb4b985449e04167df8d833ba9e1da4a8 SHA512 f77fbffe6507710d11ad0081127c2a52918d4762d52aa7741e899106b54e233cd064c28d47b0b2865f4e162cdd31f65e712fa577a2cb35d270d23ce834b52a89
-MISC metadata.xml 389 BLAKE2B dcba16dd34ab572d58d76ea55f528ee1a4bb4c0c37ca272c9a11afdb8117f6982e5109a4a4783d1efc6cb31fe273f07bf79f720f178fea635af29574007c93f9 SHA512 3c5aea925276639c81a03a2a8d05ecaa48edac510f144d92e173402721dbc253638341ac8afdfbc17098ac35d2f4f47b41e5d56427c8ecaa788dc28fbb0977ae
+DIST singular-4.2.0p3.tar.gz 16641923 BLAKE2B 4dd7e1a42c71bbba625e171aee656580b443656f50458909ffae1af81b1413d5330aa032656032ea365225eb088491fe2a48997895e37bc89eea5f17b8fbebb8 SHA512 b9833389b648ec4ba2bd09253f00254b9ae3dc61313fc81c9003b283fc413caab4274e55750de1c342ef24a8fc0ce817643cd31eabbb2999de7f5017dfa1411f
+EBUILD singular-4.2.0_p1.ebuild 2258 BLAKE2B d74e8ad0c98142364ff097e5e2d8585d01ba863021178d9c5206507c2318e71c0484bf620d77bae4927722395ef9b785d6e00be0d7d7bbd91086d71a2f54e143 SHA512 a9339d04e4beb91f440caede447bd565bf1576cab72b93e44ae39ce9be6ef26e294713b39526baa8c5ff68c867cbcddb9e87c42f19c27ca6e82786e4a5b2bf12
+EBUILD singular-4.2.0_p3.ebuild 2261 BLAKE2B 2e68d795ff1ce9984b01dd470b7715e561ba5dd32f5aefe812c4626aced0f2ac540615bfe20d7c5e2d933e91b02c3b764fdfd79e703e511a07dae4b283a480fa SHA512 19bc85354919eaafd0e244d423f44b6b4026e49a286df4613fcb2e55cade16568c5a9c4cad9890825de9bc7f0b8feac4bdaf280ac234ef767bd8c33ed07dab77
+MISC metadata.xml 275 BLAKE2B aaeef273b6352edaadf69ef76545573fbe0d22a6062f9567bcb34b1fdea4e2fb140b9aa0b4d8f44a3c3e31108f34eb555dded6f5808fac84fd29a83ef184da88 SHA512 e7e449f8bf039a1fc4707c0b12706d27b237fb3e7bee5e457bc79e032a04d7b9eb2901059b007350cc3617689638b76f97fbbd672e2d0101e2071448642415a7
diff --git a/sci-mathematics/singular/files/singular-4.0.0-fix-omalloc-ar-detection.patch b/sci-mathematics/singular/files/singular-4.0.0-fix-omalloc-ar-detection.patch
deleted file mode 100644
index 87b44234af5f..000000000000
--- a/sci-mathematics/singular/files/singular-4.0.0-fix-omalloc-ar-detection.patch
+++ /dev/null
@@ -1,12 +0,0 @@
-diff -U 3 -dHrN singular-4.0.0.orig/omalloc/configure.ac singular-4.0.0/omalloc/configure.ac
---- singular-4.0.0.orig/omalloc/configure.ac	2014-03-06 18:07:49.000000000 +0100
-+++ singular-4.0.0/omalloc/configure.ac	2014-05-09 15:41:19.755097185 +0200
-@@ -117,7 +117,7 @@
- dnl check for programs
- dnl
- AC_CHECK_PROG(AR, ar, ar, :)
--if test "$ac_cv_prog_AR" != ar; then
-+if test "$ac_cv_prog_AR" = no; then
-   AC_MSG_ERROR(*** ar program not found)
- fi
- AC_CHECK_PROGS(PERL, perl, "no")
diff --git a/sci-mathematics/singular/files/singular-4.0.2-ntl8-compat.patch b/sci-mathematics/singular/files/singular-4.0.2-ntl8-compat.patch
deleted file mode 100644
index d3e6b77a28e9..000000000000
--- a/sci-mathematics/singular/files/singular-4.0.2-ntl8-compat.patch
+++ /dev/null
@@ -1,38 +0,0 @@
-diff --git a/factory/NTLconvert.cc b/factory/NTLconvert.cc
-index 41ce9b2..e32093d 100644
---- a/factory/NTLconvert.cc
-+++ b/factory/NTLconvert.cc
-@@ -30,6 +30,7 @@
- #include <NTL/GF2EXFactoring.h>
- #include <NTL/tools.h>
- #include <NTL/mat_ZZ.h>
-+#include <NTL/version.h>
- #include "int_int.h"
- #include <limits.h>
- #include "NTLconvert.h"
-@@ -500,8 +501,14 @@ convertZZ2CF (const ZZ & a)
-     return CanonicalForm(coeff_long);
-   }
-   else
--  {
--    long sizeofrep= ((long *) a.rep) [1];
-+  { 
-+    const long * rep =
-+#if NTL_MAJOR_VERSION <= 6
-+      static_cast<long *>( a.rep );
-+#else
-+      static_cast<long *>( a.rep.rep ); // what about NTL7?
-+#endif
-+    long sizeofrep= rep[1];
-     bool lessZero= false;
-     if (sizeofrep < 0)
-     {
-@@ -519,7 +526,7 @@ convertZZ2CF (const ZZ & a)
-       cf_stringtemp_l= sizeofrep*sizeof(mp_limb_t)*2;
-       cf_stringtemp= (unsigned char*) Alloc (cf_stringtemp_l);
-     }
--    int cc= mpn_get_str (cf_stringtemp, 16, (mp_limb_t *) (((long *) (a.rep)) + 2), sizeofrep);
-+    int cc= mpn_get_str (cf_stringtemp, 16, (mp_limb_t *) ((rep) + 2), sizeofrep);
- 
-     char* cf_stringtemp2;
-     if (lessZero)
diff --git a/sci-mathematics/singular/files/singular-4.0.3-fix-destdir.patch b/sci-mathematics/singular/files/singular-4.0.3-fix-destdir.patch
deleted file mode 100644
index caeed33f1fc3..000000000000
--- a/sci-mathematics/singular/files/singular-4.0.3-fix-destdir.patch
+++ /dev/null
@@ -1,26 +0,0 @@
-From 7eac42b467723a83a951218be53785411be3dbc4 Mon Sep 17 00:00:00 2001
-From: jgmbenoit <quatermaster@rezozer.net>
-Date: Thu, 28 Apr 2016 05:47:53 +0000
-Subject: [PATCH] automake: install-data-local: missing DESTDIR prefix
-
----
- Makefile.am | 6 +++---
- 1 file changed, 3 insertions(+), 3 deletions(-)
-
-diff --git a/Makefile.am b/Makefile.am
-index 32778f7..24dd251 100644
---- a/Makefile.am
-+++ b/Makefile.am
-@@ -17,9 +17,9 @@ dist-hook:
- 	$(srcdir)/git-version-gen $(srcdir)/.tarball-git-version > $(distdir)/.tarball-git-version
- 
- install-data-local:
--	-cat ${top_srcdir}/doc/doc.tbz2| (cd $(datadir)/singular;tar jxf -)
--	-mkdir $(datadir)/info
--	-mv  $(datadir)/singular/singular.hlp  $(datadir)/info/.
-+	-cat ${top_srcdir}/doc/doc.tbz2| (cd $(DESTDIR)$(datadir)/singular; tar jxf -)
-+	-mkdir $(DESTDIR)$(datadir)/info
-+	-mv  $(DESTDIR)$(datadir)/singular/singular.hlp  $(DESTDIR)$(datadir)/info/.
- 
- configheaderdir = ${includedir}/singular
- nodist_configheader_HEADERS = singularconfig.h
diff --git a/sci-mathematics/singular/files/singular-4.0.3-fix-resources-name.patch b/sci-mathematics/singular/files/singular-4.0.3-fix-resources-name.patch
deleted file mode 100644
index bcda4ced6472..000000000000
--- a/sci-mathematics/singular/files/singular-4.0.3-fix-resources-name.patch
+++ /dev/null
@@ -1,307 +0,0 @@
-From a3a6a07858b7e91c4c8a3c8d07e53957a8547af2 Mon Sep 17 00:00:00 2001
-From: Hans Schoenemann <hannes@mathematik.uni-kl.de>
-Date: Thu, 1 Sep 2016 10:48:08 +0200
-Subject: [PATCH] change library name: libresources -> libsingular_resources
-
----
- Singular/Makefile.am               |  4 ++--
- autogen.sh                         |  1 +
- factory/configure.ac               |  8 ++++----
- gfanlib/configure.ac               |  2 +-
- libpolys/configure.ac              |  8 ++++----
- m4/options.m4                      | 10 +++++-----
- resources/Makefile.am              | 18 +++++++++---------
- resources/configure.ac             |  6 +++---
- resources/feFopen.cc               |  2 +-
- resources/feResource.cc            |  2 +-
- resources/omFindExec.c             |  2 +-
- resources/resources.pc.in          | 17 -----------------
- resources/singular_resources.pc.in | 17 +++++++++++++++++
- 13 files changed, 49 insertions(+), 48 deletions(-)
- delete mode 100644 resources/resources.pc.in
- create mode 100644 resources/singular_resources.pc.in
-
-diff --git a/Singular/Makefile.am b/Singular/Makefile.am
-index e2bcc23..be84a08 100644
---- a/Singular/Makefile.am
-+++ b/Singular/Makefile.am
-@@ -176,7 +176,7 @@ ESingular_CPPFLAGS = ${AM_CPPFLAGS} -DESINGULAR -DPROTO
- # ESingular_LDFLAGS = -static ${AM_LDFLAGS}
- ESingular_LDADD =  ${top_builddir}/libpolys/reporter/libreporter.la \
- ${top_builddir}/libpolys/misc/libmisc.la ${top_builddir}/omalloc/libomalloc.la \
--${top_builddir}/resources/libresources.la
-+${top_builddir}/resources/libsingular_resources.la
- 
- 
- ESingular_SOURCES = emacs.cc fegetopt.c fegetopt.h feOptES.inc feOpt.cc
-@@ -186,7 +186,7 @@ TSingular_CPPFLAGS = ${AM_CPPFLAGS} -DTSINGULAR -DPROTO
- # TSingular_LDFLAGS = -static ${AM_LDFLAGS}
- TSingular_LDADD = ${top_builddir}/libpolys/reporter/libreporter.la \
- ${top_builddir}/libpolys/misc/libmisc.la ${top_builddir}/omalloc/libomalloc.la \
--${top_builddir}/resources/libresources.la
-+${top_builddir}/resources/libsingular_resources.la
- 
- TSingular_SOURCES = emacs.cc fegetopt.c fegetopt.h feOptTS.inc feOpt.cc
- # utils.cc utils.h
-diff --git a/autogen.sh b/autogen.sh
-index d027997..0d09c08 100755
---- a/autogen.sh
-+++ b/autogen.sh
-@@ -4,6 +4,7 @@ cd `dirname "$0"`
- 
- # -d --warnings=all
- autoreconf  -v -f -i
-+find . -name configure -exec sed -i "s/-g -O2/-g/g" {} \; -print
- 
- cd -
- 
-diff --git a/factory/configure.ac b/factory/configure.ac
-index 7ea255b..a9caf73 100644
---- a/factory/configure.ac
-+++ b/factory/configure.ac
-@@ -120,10 +120,10 @@ AM_CONDITIONAL(
-     [WITH_PARSER_FOR_CANONICAL_FORM],
-     [test "x$enable_streamio" = xyes])
- 
--AC_ARG_VAR( [RESOURCES_INCLUDES], [INCLUDES for libresources] )
--AC_ARG_VAR( [RESOURCES_LIBS], [LIBS for libresources] )
-+AC_ARG_VAR( [RESOURCES_INCLUDES], [INCLUDES for libsingular_resources] )
-+AC_ARG_VAR( [RESOURCES_LIBS], [LIBS for libsingular_resources] )
- 
--AC_MSG_CHECKING(whether libresources should be used)
-+AC_MSG_CHECKING(whether libsingular_resources should be used)
- if test "x$with_Singular" = xyes;
- then
-   AC_MSG_RESULT(yes)
-@@ -134,7 +134,7 @@ then
-   AC_MSG_CHECKING([  RESOURCES_LIBS?..])
-   AC_MSG_RESULT(${RESOURCES_LIBS:-unset})
- 
--  PKG_REQUIRE="$PKG_REQUIRE resources"
-+  PKG_REQUIRE="$PKG_REQUIRE singular_resources"
-   AC_SUBST(PKG_REQUIRE)
- else
-   AC_MSG_RESULT(no)
-diff --git a/gfanlib/configure.ac b/gfanlib/configure.ac
-index 015134c..d3d2cd7 100644
---- a/gfanlib/configure.ac
-+++ b/gfanlib/configure.ac
-@@ -2,7 +2,7 @@
- # Process this file with autoconf to produce a configure script.
- 
- AC_PREREQ([2.63])
--AC_INIT([libgfan], [0.1], [ren@mathematik.uni-kl.de])
-+AC_INIT([libgfan], [0.6], [ren@mathematik.uni-kl.de])
- AC_CONFIG_MACRO_DIR([../m4])
- AC_CONFIG_AUX_DIR([../build-aux])
- AC_CONFIG_SRCDIR([gfanlib.h])
-diff --git a/libpolys/configure.ac b/libpolys/configure.ac
-index 049e44d..4b2f1ae 100644
---- a/libpolys/configure.ac
-+++ b/libpolys/configure.ac
-@@ -90,10 +90,10 @@ SING_CHECK_OMALLOC()
- 
- ENABLE_RESOURCES="yes"
- 
--AC_ARG_VAR( [RESOURCES_INCLUDES], [INCLUDES for libresources] )
--AC_ARG_VAR( [RESOURCES_LIBS], [LIBS for libresources] )
-+AC_ARG_VAR( [RESOURCES_INCLUDES], [INCLUDES for libsingular_resources] )
-+AC_ARG_VAR( [RESOURCES_LIBS], [LIBS for libsingular_resources] )
- 
--AC_MSG_CHECKING(whether libresources should be used)
-+AC_MSG_CHECKING(whether libsingular_resources should be used)
- 
- if test "x$ENABLE_RESOURCES" = xyes;
- then
-@@ -105,7 +105,7 @@ then
-   AC_MSG_CHECKING([  RESOURCES_LIBS?..])
-   AC_MSG_RESULT(${RESOURCES_LIBS:-unset})
- 
--  PKG_REQUIRE="$PKG_REQUIRE resources"
-+  PKG_REQUIRE="$PKG_REQUIRE singular_resources"
-   AC_SUBST(PKG_REQUIRE)
- else
-   AC_MSG_RESULT(no)
-diff --git a/m4/options.m4 b/m4/options.m4
-index 31b86e4..066dc4d 100644
---- a/m4/options.m4
-+++ b/m4/options.m4
-@@ -150,19 +150,19 @@ AC_DEFUN([SING_USE_OMALLOC],
- 
- AC_DEFUN([SING_USE_RESOURCES],
- [
-- AC_ARG_ENABLE(resources,
--  [AS_HELP_STRING([--disable-resources], [do NOT use libresources within the factory])],
-+ AC_ARG_ENABLE(singular_resources,
-+  [AS_HELP_STRING([--disable-singular_resources], [do NOT use libsingular_resources within the factory])],
-   [if test "x$enableval"  = "xyes"; then
-     ENABLE_RESOURCES=yes
-    fi],
-     ENABLE_RESOURCES=yes)
- 
-- AC_MSG_CHECKING(whether to use libresources in factory and co.)
-+ AC_MSG_CHECKING(whether to use libsingular_resources in factory and co.)
-  if test "x$ENABLE_RESOURCES" = xyes; then
-   AC_MSG_RESULT(yes)
-   RESOURCES_INCLUDES="-I$ac_abs_top_srcdir "
- 
--  RESOURCES_LIBS="$ac_abs_top_builddir/resources/libresources.la"
-+  RESOURCES_LIBS="$ac_abs_top_builddir/resources/libsingular_resources.la"
- 
-   AC_SUBST(RESOURCES_INCLUDES)
-   AC_SUBST(RESOURCES_LIBS)
-@@ -171,7 +171,7 @@ AC_DEFUN([SING_USE_RESOURCES],
- 
-   ac_configure_args="$ac_configure_args $ENABLE_ARG"
- 
--  PKG_REQUIRE="$PKG_REQUIRE resources"
-+  PKG_REQUIRE="$PKG_REQUIRE singular_resources"
-   AC_SUBST(PKG_REQUIRE)
-  else
-   AC_MSG_RESULT(no)
-diff --git a/resources/Makefile.am b/resources/Makefile.am
-index fa69ccc..934175b 100644
---- a/resources/Makefile.am
-+++ b/resources/Makefile.am
-@@ -1,24 +1,24 @@
- ACLOCAL_AMFLAGS = -I ../m4
- 
--libresources_LTLIBRARIES = libresources.la
-+libsingular_resources_LTLIBRARIES = libsingular_resources.la
- 
--libresourcesdir = $(libdir)
-+libsingular_resourcesdir = $(libdir)
- 
- 
- AM_CPPFLAGS = -I${top_srcdir} -I${top_builddir}
- 
- 
- SOURCES  = omFindExec.c feResource.cc feFopen.cc
--libresources_la_SOURCES   = $(SOURCES)
-+libsingular_resources_la_SOURCES   = $(SOURCES)
- 
--libresources_la_LDFLAGS   = -release ${PACKAGE_VERSION}
-+libsingular_resources_la_LDFLAGS   = -release ${PACKAGE_VERSION}
- 
--libresources_includedir  =$(includedir)/resources
-+libsingular_resources_includedir  =$(includedir)/resources
- 
--libresources_include_HEADERS = omFindExec.h feResource.h feFopen.h
-+libsingular_resources_include_HEADERS = omFindExec.h feResource.h feFopen.h
- 
--nodist_libresources_include_HEADERS = resourcesconfig.h
--DISTCLEANFILES = $(nodist_libresources_include_HEADERS)
-+nodist_libsingular_resources_include_HEADERS = singular_resourcesconfig.h
-+DISTCLEANFILES = $(nodist_libsingular_resources_include_HEADERS)
- 
- pkgconfigdir = $(libdir)/pkgconfig
--pkgconfig_DATA = resources.pc
-+pkgconfig_DATA = singular_resources.pc
-diff --git a/resources/configure.ac b/resources/configure.ac
-index bc5f294..212a1d5 100644
---- a/resources/configure.ac
-+++ b/resources/configure.ac
-@@ -1,4 +1,4 @@
--AC_INIT([resources], [4.0.3])
-+AC_INIT([singular_resources], [4.0.3])
- 
- AC_CONFIG_MACRO_DIR([../m4])
- AC_CONFIG_AUX_DIR([../build-aux])
-@@ -14,7 +14,7 @@ dnl Check if build env is sane
- AM_SANITY_CHECK
- 
- # Add pre'prefixed config
--AX_PREFIX_CONFIG_H([resourcesconfig.h],[],[_config.h])
-+AX_PREFIX_CONFIG_H([singular_resourcesconfig.h],[],[_config.h])
- 
- SING_RESET_FLAGS()
- SING_CHECK_SET_ARGS()
-@@ -70,5 +70,5 @@ AX_RECURSIVE_EVAL([[$]datadir], [config_datadir])
- AX_NORMALIZE_PATH([config_datadir],['/'])
- AC_DEFINE_UNQUOTED([DATA_DIR],"$config_datadir",[datadir])
- 
--AC_CONFIG_FILES([resources.pc Makefile])
-+AC_CONFIG_FILES([singular_resources.pc Makefile])
- AC_OUTPUT
-diff --git a/resources/feFopen.cc b/resources/feFopen.cc
-index 98cfd44..10800a0 100644
---- a/resources/feFopen.cc
-+++ b/resources/feFopen.cc
-@@ -1,4 +1,4 @@
--#include "resourcesconfig.h"
-+#include "singular_resourcesconfig.h"
- #include "feResource.h"
- #include "feFopen.h"
- 
-diff --git a/resources/feResource.cc b/resources/feResource.cc
-index 49a6855..a3accf9 100644
---- a/resources/feResource.cc
-+++ b/resources/feResource.cc
-@@ -5,7 +5,7 @@
- * ABSTRACT: management of resources
- */
- 
--#include "resourcesconfig.h"
-+#include "singular_resourcesconfig.h"
- #include "feResource.h"
- #include "omFindExec.h"
- 
-diff --git a/resources/omFindExec.c b/resources/omFindExec.c
-index e79f2c8..1d5852a 100644
---- a/resources/omFindExec.c
-+++ b/resources/omFindExec.c
-@@ -6,7 +6,7 @@
-  *******************************************************************/
- 
- 
--#include "resourcesconfig.h"
-+#include "singular_resourcesconfig.h"
- 
- 
- #if defined(HAVE_UNISTD_H) && defined(STDC_HEADERS)
-diff --git a/resources/resources.pc.in b/resources/resources.pc.in
-deleted file mode 100644
-index d040056..0000000
---- a/resources/resources.pc.in
-+++ /dev/null
-@@ -1,17 +0,0 @@
--prefix=@prefix@
--exec_prefix=@exec_prefix@
--libdir=@libdir@
--includedir=@includedir@
--
--Name: @PACKAGE@
--Description: The Singular resources manager
--Version: @PACKAGE_VERSION@
--URL: https://github.com/Singular/Sources/tree/spielwiese/@PACKAGE@
--
--# Requires:
--# Conflicts:
--
--Cflags: -I${includedir} @SINGULAR_CFLAGS@
--Libs: -L${libdir} -l@PACKAGE@
--# Libs.private:
--
-diff --git a/resources/singular_resources.pc.in b/resources/singular_resources.pc.in
-new file mode 100644
-index 0000000..d040056
---- /dev/null
-+++ b/resources/singular_resources.pc.in
-@@ -0,0 +1,17 @@
-+prefix=@prefix@
-+exec_prefix=@exec_prefix@
-+libdir=@libdir@
-+includedir=@includedir@
-+
-+Name: @PACKAGE@
-+Description: The Singular resources manager
-+Version: @PACKAGE_VERSION@
-+URL: https://github.com/Singular/Sources/tree/spielwiese/@PACKAGE@
-+
-+# Requires:
-+# Conflicts:
-+
-+Cflags: -I${includedir} @SINGULAR_CFLAGS@
-+Libs: -L${libdir} -l@PACKAGE@
-+# Libs.private:
-+
diff --git a/sci-mathematics/singular/files/singular-4.2.0-doc_install.patch b/sci-mathematics/singular/files/singular-4.2.0-doc_install.patch
new file mode 100644
index 000000000000..b0656d9fb676
--- /dev/null
+++ b/sci-mathematics/singular/files/singular-4.2.0-doc_install.patch
@@ -0,0 +1,79 @@
+From 74ec250d3d89d0125c409b3340aca50a00b067ad Mon Sep 17 00:00:00 2001
+From: Michael Orlitzky <michael@orlitzky.com>
+Date: Sun, 30 May 2021 08:28:41 -0400
+Subject: [PATCH 3/3] autotools: support docdir and htmldir.
+
+Instead of hard-coding the "doc" and "html" subdirectories,
+allow them to be ./configured.
+---
+ Makefile.am             | 8 ++++----
+ configure.ac            | 5 +++++
+ resources/configure.ac  | 4 ++++
+ resources/feResource.cc | 2 +-
+ 4 files changed, 14 insertions(+), 5 deletions(-)
+
+diff --git a/Makefile.am b/Makefile.am
+index fbea51d..c5d78a7 100644
+--- a/Makefile.am
++++ b/Makefile.am
+@@ -16,10 +16,10 @@ bin_SCRIPTS = libsingular-config
+ 
+ install-data-local:
+ 	if test -e $(srcdir)/doc/doc.tbz2; then\
+-	  (cat ${top_srcdir}/doc/doc.tbz2| (cd $(DESTDIR)$(datadir)/singular; tar -jx --no-same-owner -f -));\
+-	   mkdir $(DESTDIR)$(datadir)/info;\
+-	   mkdir $(DESTDIR)$(datadir)/doc;\
+-	   mv  $(DESTDIR)$(datadir)/singular/singular.hlp  $(DESTDIR)$(datadir)/info/.;\
++	   mkdir -p $(DESTDIR)$(docdir);\
++	   (cat ${top_srcdir}/doc/doc.tbz2| (cd $(DESTDIR)$(docdir); tar -jx --no-same-owner -f -));\
++	   mv  $(DESTDIR)$(docdir)/singular.hlp  $(DESTDIR)$(datadir)/info/.;\
++	   @INSTALL_DATA@ doc/singular.idx  $(DESTDIR)$(datadir)/singular/.;\
+ 	fi
+ 
+ uninstall-local:
+diff --git a/configure.ac b/configure.ac
+index 490a45f..997db6c 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -228,6 +228,11 @@ AX_NORMALIZE_PATH([config_datadir],['/'])
+ AC_DEFINE_UNQUOTED([DATA_DIR],"$config_datadir",[datadir])
+ AC_SUBST(DATA_DIR, "$config_datadir")
+ 
++AX_RECURSIVE_EVAL([[$]docdir], [config_docdir])
++AX_NORMALIZE_PATH([config_docdir],['/'])
++AC_DEFINE_UNQUOTED([DOC_DIR],"$config_docdir",[docdir])
++AC_SUBST(DOC_DIR, "$config_docdir")
++
+ SING_SHOW_FLAGS([Compiler/linker flags: ])
+ 
+ 
+diff --git a/resources/configure.ac b/resources/configure.ac
+index 0dc468f..da68144 100644
+--- a/resources/configure.ac
++++ b/resources/configure.ac
+@@ -72,5 +72,9 @@ AX_RECURSIVE_EVAL([[$]datadir], [config_datadir])
+ AX_NORMALIZE_PATH([config_datadir],['/'])
+ AC_DEFINE_UNQUOTED([DATA_DIR],"$config_datadir",[datadir])
+ 
++AX_RECURSIVE_EVAL([[$]htmldir], [config_htmldir])
++AX_NORMALIZE_PATH([config_htmldir],['/'])
++AC_DEFINE_UNQUOTED([HTML_DIR],"$config_datadir",[htmldir])
++
+ AC_CONFIG_FILES([singular_resources.pc Makefile])
+ AC_OUTPUT
+diff --git a/resources/feResource.cc b/resources/feResource.cc
+index 3d75bc9..7e4fc8c 100644
+--- a/resources/feResource.cc
++++ b/resources/feResource.cc
+@@ -85,7 +85,7 @@ VAR feResourceConfig_s feResourceConfigs[] =
+   {"DefaultDir",'d',    feResDir,   "SINGULAR_DEFAULT_DIR",  SINGULAR_DEFAULT_DIR,  (char *)""},
+   {"InfoFile",  'i',    feResFile,  "SINGULAR_INFO_FILE",   "%D/info/singular.hlp", (char *)""},
+   {"IdxFile",   'x',    feResFile,  "SINGULAR_IDX_FILE",    "%D/singular/singular.idx",  (char *)""},
+-  {"HtmlDir",   'h',    feResDir,   "SINGULAR_HTML_DIR",    "%D/singular/html",              (char *)""},
++  {"HtmlDir",   'h',    feResDir,   "SINGULAR_HTML_DIR",    HTML_DIR,              (char *)""},
+   {"ManualUrl", 'u',    feResUrl,   "SINGULAR_URL",         "https://www.singular.uni-kl.de/Manual/",    (char *)""},
+   {"ExDir",     'm',    feResDir,   "SINGULAR_EXAMPLES_DIR","%r/examples",          (char *)""},
+   {"Path",      'p',    feResPath,  NULL,                   "%b;%P;$PATH",             (char *)""},
+-- 
+2.31.1
+
diff --git a/sci-mathematics/singular/files/singular-4.2.0-gfan_linking.patch b/sci-mathematics/singular/files/singular-4.2.0-gfan_linking.patch
new file mode 100644
index 000000000000..267bf19361ad
--- /dev/null
+++ b/sci-mathematics/singular/files/singular-4.2.0-gfan_linking.patch
@@ -0,0 +1,38 @@
+From 705149b86a80dd8b53fa8c1717872e9b2e9dbbcb Mon Sep 17 00:00:00 2001
+From: Michael Orlitzky <michael@orlitzky.com>
+Date: Sun, 30 May 2021 08:10:10 -0400
+Subject: [PATCH 1/3] gfanlib/Makefile.am: use LIBADD for additional libraries.
+
+The $GMP_LIBS and $CDDGMPLDFLAGS variables were being added to
+libgfan_la_LDFLAGS, which isn't quite correct. Since both contain
+library (-l) flags, they belong in _LIBADD rather than _LDFLAGS:
+
+  https://www.gnu.org/software/automake/manual/html_node/Libtool-Flags.html
+
+This commit moves them to a new libgfan_la_LIBADD variable.
+---
+ gfanlib/Makefile.am | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+diff --git a/gfanlib/Makefile.am b/gfanlib/Makefile.am
+index cec8d8f..96e1893 100644
+--- a/gfanlib/Makefile.am
++++ b/gfanlib/Makefile.am
+@@ -18,9 +18,13 @@ AM_CXXFLAGS = @CXX11_FLAG@
+ 
+ SOURCES = gfanlib_circuittableint.cpp gfanlib_mixedvolume.cpp gfanlib_paralleltraverser.cpp gfanlib_polyhedralfan.cpp gfanlib_polymakefile.cpp gfanlib_symmetriccomplex.cpp gfanlib_symmetry.cpp gfanlib_traversal.cpp gfanlib_zcone.cpp gfanlib_zfan.cpp
+ libgfan_la_SOURCES = $(SOURCES)
+-libgfan_la_LDFLAGS = $(SINGULAR_LDFLAGS) $(CDDGMPLDFLAGS) $(GMP_LIBS)
++libgfan_la_LDFLAGS = $(SINGULAR_LDFLAGS)
+ libgfan_la_CPPFLAGS= $(GMP_CPPFLAGS) $(CDDGMPCPPFLAGS)
+ 
++# Despite the naming convention, $CDDGMPLDFLAGS contains "-lcddgmp"
++# and the rest of the $GMP_LIBS flags.
++libgfan_la_LIBADD = $(CDDGMPLDFLAGS) $(GMP_LIBS)
++
+ noinst_HEADERS = config.h gfanlib_mixedvolume.h gfanlib_polymakefile.h gfanlib_symmetry.h gfanlib_vector.h gfanlib_z.h _config.h  gfanlib.h gfanlib_paralleltraverser.h gfanlib_q.h  gfanlib_traversal.h gfanlib_zcone.h gfanlib_circuittableint.h gfanlib_matrix.h gfanlib_polyhedralfan.h gfanlib_symmetriccomplex.h gfanlib_tropicalhomotopy.h gfanlib_zfan.h
+ 
+ DISTCLEANFILES =  config.h
+-- 
+2.31.1
+
diff --git a/sci-mathematics/singular/metadata.xml b/sci-mathematics/singular/metadata.xml
index faab92efd936..d17eda6d58f4 100644
--- a/sci-mathematics/singular/metadata.xml
+++ b/sci-mathematics/singular/metadata.xml
@@ -5,7 +5,4 @@
     <email>sci-mathematics@gentoo.org</email>
     <name>Gentoo Mathematics Project</name>
   </maintainer>
-  <use>
-    <flag name="boost">Compile against external boost headers (<pkg>dev-libs/boost</pkg>)</flag>
-  </use>
 </pkgmetadata>
diff --git a/sci-mathematics/singular/singular-4.0.2.ebuild b/sci-mathematics/singular/singular-4.0.2.ebuild
deleted file mode 100644
index c66500337100..000000000000
--- a/sci-mathematics/singular/singular-4.0.2.ebuild
+++ /dev/null
@@ -1,137 +0,0 @@
-# Copyright 1999-2021 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=5
-
-inherit autotools epatch elisp-common flag-o-matic toolchain-funcs versionator
-
-MY_PN=Singular
-MY_PV=$(replace_all_version_separators '.')
-# Consistency is different...
-MY_DIR2=$(get_version_component_range 1-3 ${PV})
-MY_DIR=$(replace_all_version_separators '-' ${MY_DIR2})
-# This is where the share tarball unpacks to
-MY_SHARE_DIR="${WORKDIR}"/share/
-
-DESCRIPTION="Computer algebra system for polynomial computations"
-HOMEPAGE="https://www.singular.uni-kl.de/"
-SRC_URI="https://www.mathematik.uni-kl.de/ftp/pub/Math/${MY_PN}/SOURCES/${MY_DIR}/${PN}-${MY_PV}.tar.gz
-		 https://www.mathematik.uni-kl.de/ftp/pub/Math/${MY_PN}/SOURCES/${MY_DIR}/${PN}-${MY_PV}-share.tar.gz"
-
-LICENSE="GPL-2"
-SLOT="0"
-KEYWORDS="amd64 ppc x86 ~x86-linux"
-IUSE="boost doc emacs examples python +readline"
-
-RDEPEND="dev-libs/gmp:0
-	>=dev-libs/ntl-5.5.1
-	emacs? ( >=app-editors/emacs-23.1:* )
-	sci-mathematics/flint
-	sci-mathematics/4ti2
-	sci-libs/cddlib"
-
-DEPEND="${RDEPEND}
-	dev-lang/perl
-	boost? ( dev-libs/boost )
-	readline? ( sys-libs/readline )"
-
-SITEFILE=60${PN}-gentoo.el
-
-S="${WORKDIR}/${PN}-${MY_DIR2}"
-
-pkg_setup() {
-	append-flags "-fPIC"
-	append-ldflags "-fPIC"
-	tc-export AR CC CPP CXX
-}
-
-src_prepare() {
-	# Need to do something about resources later...
-	# epatch "${FILESDIR}"/${PN}-4.0.0-gentoo.patch
-
-	# omalloc's old configure will fail if ar is not exactly 'ar'.
-	epatch "${FILESDIR}"/${PN}-4.0.0-fix-omalloc-ar-detection.patch
-
-	epatch "${FILESDIR}"/${PN}-4.0.2-ntl8-compat.patch
-
-	# autoreconf everything since otherwise it assumes autmake-1.13 is installed
-	eautoreconf
-}
-
-src_configure() {
-	econf --with-gmp \
-		  --with-ntl \
-		  --with-flint \
-		  --enable-gfanlib \
-		  --disable-debug \
-		  --disable-doc \
-		  --enable-factory \
-		  --enable-libfac \
-		  --enable-IntegerProgramming \
-		  $(use_with python python embed) \
-		  $(use_with boost Boost) \
-		  $(use_enable emacs) \
-		  $(use_with readline) || die "configure failed"
-}
-
-src_compile() {
-	emake
-
-	if use emacs; then
-		cd "${MY_SHARE_DIR}"singular/emacs/
-		elisp-compile *.el || die "elisp-compile failed"
-	fi
-}
-
-# src_install() {
-# 	dodoc README
-# 	# execs and libraries
-# 	cd "${S}"/build/bin
-# 	dobin ${MY_PN}* gen_test change_cost solve_IP toric_ideal LLL
-# 	insinto /usr/$(get_libdir)/${PN}
-# 	doins *.so
-#
-# 	dosym ${MY_PN}-${MY_DIR} /usr/bin/${MY_PN}
-#
-# 	# stuff from the share tar ball
-# 	cd "${WORKDIR}"/${MY_PN}/${MY_SHARE_DIR}
-# 	insinto /usr/share/${PN}
-# 	doins -r LIB
-# 	if use examples; then
-# 		insinto /usr/share/doc/${PF}
-# 		doins -r examples
-# 	fi
-# 	if use doc; then
-# 		dohtml -r html/*
-# 		insinto /usr/share/${PN}
-# 		doins doc/singular.idx
-# 		cp info/${PN}.hlp info/${PN}.info &&
-# 		doinfo info/${PN}.info \
-# 			|| die "failed to install info files"
-# 	fi
-# 	if use emacs; then
-# 		elisp-install ${PN} emacs/*.el emacs/*.elc emacs/.emacs* \
-# 			|| die "elisp-install failed"
-# 		elisp-site-file-install "${FILESDIR}/${SITEFILE}"
-# 	fi
-# }
-
-pkg_postinst() {
-	einfo "The authors ask you to register as a SINGULAR user."
-	einfo "Please check the license file for details."
-
-	if use emacs; then
-		echo
-		ewarn "Please note that the ESingular emacs wrapper has been"
-		ewarn "removed in favor of full fledged singular support within"
-		ewarn "Gentoo's emacs infrastructure; i.e. just fire up emacs"
-		ewarn "and you should be good to go! See bug #193411 for more info."
-		echo
-	fi
-
-	use emacs && elisp-site-regen
-}
-
-pkg_postrm() {
-	use emacs && elisp-site-regen
-}
diff --git a/sci-mathematics/singular/singular-4.0.3.ebuild b/sci-mathematics/singular/singular-4.0.3.ebuild
deleted file mode 100644
index 3a0712e9be7f..000000000000
--- a/sci-mathematics/singular/singular-4.0.3.ebuild
+++ /dev/null
@@ -1,98 +0,0 @@
-# Copyright 1999-2021 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=6
-
-inherit autotools elisp-common flag-o-matic multilib prefix toolchain-funcs versionator
-
-MY_PN=Singular
-MY_PV=$(replace_all_version_separators '.')
-# Consistency is different...
-MY_DIR2=$(get_version_component_range 1-3 ${PV})
-MY_DIR=$(replace_all_version_separators '-' ${MY_DIR2})
-# This is where the share tarball unpacks to
-
-DESCRIPTION="Computer algebra system for polynomial computations"
-HOMEPAGE="https://www.singular.uni-kl.de/"
-SRC_URI="https://www.mathematik.uni-kl.de/ftp/pub/Math/${MY_PN}/SOURCES/${MY_DIR}/${PN}-${MY_PV}.tar.gz
-		 https://www.mathematik.uni-kl.de/ftp/pub/Math/${MY_PN}/SOURCES/${MY_DIR}/${PN}-${MY_PV}-share.tar.gz"
-
-LICENSE="GPL-2"
-SLOT="0"
-KEYWORDS="~amd64 ~ppc ~x86 ~x86-linux"
-IUSE="boost doc emacs examples python +readline"
-
-RDEPEND="dev-libs/gmp:0
-	>=dev-libs/ntl-5.5.1
-	emacs? ( >=app-editors/emacs-23.1:* )
-	sci-mathematics/flint
-	sci-mathematics/4ti2
-	sci-libs/cddlib"
-
-DEPEND="${RDEPEND}
-	dev-lang/perl
-	boost? ( dev-libs/boost )
-	readline? ( sys-libs/readline )"
-
-SITEFILE=60${PN}-gentoo.el
-
-S="${WORKDIR}/${PN}-${MY_DIR2}"
-
-pkg_setup() {
-	append-flags "-fPIC"
-	append-ldflags "-fPIC"
-	tc-export AR CC CPP CXX
-}
-
-src_prepare() {
-	eapply "${FILESDIR}"/"${P}"-fix-resources-name.patch
-	eapply "${FILESDIR}"/"${P}"-fix-destdir.patch
-	eapply_user
-	# autoreconf everything since otherwise it assumes autmake-1.13 is installed
-	eautoreconf
-}
-
-src_configure() {
-	econf --with-gmp \
-		  --with-ntl \
-		  --with-flint \
-		  --enable-gfanlib \
-		  --disable-debug \
-		  --disable-doc \
-		  --enable-factory \
-		  --enable-libfac \
-		  --enable-IntegerProgramming \
-		  $(use_with python python embed) \
-		  $(use_with boost Boost) \
-		  $(use_enable emacs) \
-		  $(use_with readline) || die "configure failed"
-}
-
-src_compile() {
-	emake
-
-	if use emacs; then
-		cd "${S}"/emacs/
-		elisp-compile *.el || die "elisp-compile failed"
-	fi
-}
-
-pkg_postinst() {
-	einfo "The authors ask you to register as a SINGULAR user."
-	einfo "Please check the license file for details."
-
-	if use emacs; then
-		echo
-		ewarn "Please note that the ESingular emacs wrapper has been"
-		ewarn "removed in favor of full fledged singular support within"
-		ewarn "Gentoo's emacs infrastructure; i.e. just fire up emacs"
-		ewarn "and you should be good to go! See bug #193411 for more info."
-		echo
-	fi
-
-	use emacs && elisp-site-regen
-}
-
-pkg_postrm() {
-	use emacs && elisp-site-regen
-}
diff --git a/sci-mathematics/singular/singular-4.2.0_p1.ebuild b/sci-mathematics/singular/singular-4.2.0_p1.ebuild
index b015ba5fee61..47a82d1c8fae 100644
--- a/sci-mathematics/singular/singular-4.2.0_p1.ebuild
+++ b/sci-mathematics/singular/singular-4.2.0_p1.ebuild
@@ -17,7 +17,7 @@ SRC_URI="ftp://jim.mathematik.uni-kl.de/pub/Math/${MY_PN}/SOURCES/${MY_DIR}/${PN
 
 LICENSE="BSD GPL-2 GPL-3"
 SLOT="0"
-KEYWORDS="~amd64 ~ppc ~x86 ~x86-linux"
+KEYWORDS="amd64 ppc x86 ~x86-linux"
 IUSE="emacs examples +readline static-libs"
 
 RDEPEND="dev-libs/gmp:0
diff --git a/sci-mathematics/singular/singular-4.2.0_p3.ebuild b/sci-mathematics/singular/singular-4.2.0_p3.ebuild
new file mode 100644
index 000000000000..df77bad38d57
--- /dev/null
+++ b/sci-mathematics/singular/singular-4.2.0_p3.ebuild
@@ -0,0 +1,104 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit autotools elisp-common
+
+MY_PN=Singular
+MY_PV=$(ver_rs 3 '')
+# Consistency is different...
+MY_DIR2=$(ver_cut 1-3 ${PV})
+MY_DIR=$(ver_rs 1- '-' ${MY_DIR2})
+
+DESCRIPTION="Computer algebra system for polynomial computations"
+HOMEPAGE="https://www.singular.uni-kl.de/ https://github.com/Singular/Sources"
+SRC_URI="ftp://jim.mathematik.uni-kl.de/pub/Math/${MY_PN}/SOURCES/${MY_DIR}/${PN}-${MY_PV}.tar.gz"
+
+LICENSE="BSD GPL-2 GPL-3"
+SLOT="0"
+KEYWORDS="~amd64 ~ppc ~x86 ~x86-linux"
+IUSE="emacs examples +readline static-libs"
+
+RDEPEND="dev-libs/gmp:0
+	dev-libs/ntl:=
+	emacs? ( >=app-editors/emacs-23.1:* )
+	sci-mathematics/flint
+	sci-libs/cddlib
+	dev-lang/perl
+	readline? ( sys-libs/readline )"
+
+DEPEND="${RDEPEND}"
+
+SITEFILE=60${PN}-gentoo.el
+
+S="${WORKDIR}/${PN}-${MY_DIR2}"
+
+PATCHES=(
+	"${FILESDIR}/${PN}-4.2.0-gfan_linking.patch"
+	"${FILESDIR}/${PN}-4.2.0-doc_install.patch"
+	"${FILESDIR}/${PN}-4.2.0-no-static.patch"
+)
+
+src_prepare() {
+	default
+
+	eautoreconf
+}
+
+src_configure() {
+	econf --with-gmp \
+		--with-ntl="${EPREFIX}"/usr \
+		--with-flint \
+		--enable-gfanlib \
+		--disable-debug \
+		--disable-doc \
+		--enable-factory \
+		--enable-libfac \
+		--enable-IntegerProgramming \
+		--disable-polymake \
+		$(use_enable static-libs static) \
+		$(use_enable emacs) \
+		$(use_with readline)
+}
+
+src_compile() {
+	default
+
+	if use emacs; then
+		pushd "${S}"/emacs
+		elisp-compile *.el || die "elisp-compile failed"
+		popd
+	fi
+}
+
+src_install() {
+	# Do not compress singular's info file (singular.hlp)
+	# some consumer of that file do not know how to deal with compression
+	docompress -x /usr/share/info
+
+	default
+
+	dosym Singular /usr/bin/"${PN}"
+
+	# purge .la file
+	find "${ED}" -name '*.la' -delete || die
+}
+
+src_test() {
+	# SINGULAR_PROCS_DIR need to be set to "" otherwise plugins from
+	# an already installed version of singular may be used and cause segfault
+	# See https://github.com/Singular/Sources/issues/980
+	SINGULAR_PROCS_DIR="" emake check
+}
+
+pkg_postinst() {
+	einfo "Additional functionality can be enabled by installing"
+	einfo "sci-mathematics/4ti2"
+
+	use emacs && elisp-site-regen
+}
+
+pkg_postrm() {
+	use emacs && elisp-site-regen
+}