From a2ade83c1df9b347b41af2a21f8e20ffe32dbdb1 Mon Sep 17 00:00:00 2001
From: dkwo <nicolopiazzalunga@gmail.com>
Date: Fri, 3 Sep 2021 16:32:12 +0200
Subject: [PATCH 1/2] New package: cddlib-0.94m

---
 common/shlibs           |  2 ++
 srcpkgs/cddlib/template | 12 ++++++++++++
 2 files changed, 14 insertions(+)
 create mode 100644 srcpkgs/cddlib/template

diff --git a/common/shlibs b/common/shlibs
index 6f250a63f5d0..80533fffc33e 100644
--- a/common/shlibs
+++ b/common/shlibs
@@ -47,6 +47,8 @@ libSegFault.so glibc-2.32_1
 libpcprofile.so glibc-2.32_1
 libcidn.so.1 glibc-2.32_1
 libmvec.so.1 glibc-2.32_1
+libcddgmp.so.0 cddlib-0.94m_1
+libcdd.so.0 cddlib-0.94m_1
 libz.so.1 zlib-1.2.3_1
 libb2.so.1 libb2-0.98.1_1
 libbz2.so.1 bzip2-1.0.5_1
diff --git a/srcpkgs/cddlib/template b/srcpkgs/cddlib/template
new file mode 100644
index 000000000000..37759cf0361c
--- /dev/null
+++ b/srcpkgs/cddlib/template
@@ -0,0 +1,12 @@
+# Template file for 'cddlib'
+pkgname=cddlib
+version=0.94m
+revision=1
+build_style=gnu-configure
+hostmakedepends="gmp-devel"
+short_desc="Efficient implementation of the Double Description Method"
+maintainer="dkwo <nicolopiazzalunga@gmail.com>"
+license="GPL-2.0-or-later"
+homepage="https://github.com/cddlib/cddlib"
+distfiles="https://github.com/cddlib/cddlib/releases/download/${version}/cddlib-${version}.tar.gz"
+checksum=70dffdb3369b8704dc75428a1b3c42ab9047b81ce039f12f427e2eb2b1b0dee2

From e967ad397d575d6edfb91f263109a43f9ae8cd6a Mon Sep 17 00:00:00 2001
From: dkwo <nicolopiazzalunga@gmail.com>
Date: Fri, 3 Sep 2021 17:41:02 +0200
Subject: [PATCH 2/2] New package: singular-4.2.1

---
 srcpkgs/singular/patches/polys.patch | 22 ++++++++++++++++++++++
 srcpkgs/singular/template            | 17 +++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 srcpkgs/singular/patches/polys.patch
 create mode 100644 srcpkgs/singular/template

diff --git a/srcpkgs/singular/patches/polys.patch b/srcpkgs/singular/patches/polys.patch
new file mode 100644
index 000000000000..73ee062e2f89
--- /dev/null
+++ b/srcpkgs/singular/patches/polys.patch
@@ -0,0 +1,22 @@
+From 6e2383111a18b2fa2d3421045625d1d424eb1e25 Mon Sep 17 00:00:00 2001
+From: Hans Schoenemann <hannes@mathematik.uni-kl.de>
+Date: Mon, 20 Sep 2021 15:13:36 +0200
+Subject: [PATCH] fix: make check: polys_test
+
+---
+ libpolys/tests/polys_test.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/libpolys/tests/polys_test.h b/libpolys/tests/polys_test.h
+index 5526aa5a6b..5b4c561238 100644
+--- a/libpolys/tests/polys_test.h
++++ b/libpolys/tests/polys_test.h
+@@ -2481,7 +2481,7 @@ class PolysTestSuite : public CxxTest::TestSuite
+     {
+       for (int qi = 0; qi <= 100; qi++)
+       {
+-        int c = rand() % 1000000;
++        int c = rand() % 1000000+1; /* c must not be 0 */
+         poly qterm = p_ISet(c, r); p_SetExp(qterm, 1, qi, r);
+         p_Setm(qterm, r);
+         number qtermAsN = toFractionNumber(qterm, cf);
diff --git a/srcpkgs/singular/template b/srcpkgs/singular/template
new file mode 100644
index 000000000000..e3d27bd0d4cd
--- /dev/null
+++ b/srcpkgs/singular/template
@@ -0,0 +1,17 @@
+# Template file for 'singular'
+pkgname=singular
+version=4.2.1
+revision=1
+build_style=gnu-configure
+configure_args="--with-readline=ncurses --enable-bigintm-module --enable-bigintm-module --enable-Order-module
+ --enable-python-module --enable-gfanlib-module --enable-polymake-module"
+hostmakedepends="perl tar"
+makedepends="flintlib-devel ntl-devel cddlib readline-devel doxygen graphviz"
+short_desc="Computer algebra system for polynomial computations"
+maintainer="dkwo <nicolopiazzalunga@gmail.com>"
+license="GPL-2.0-or-later"
+homepage="https://www.singular.uni-kl.de"
+distfiles="https://service.mathematik.uni-kl.de/ftp/pub/Math/Singular/src/${version//./-}/singular-${version}.tar.gz"
+checksum=28a56df84f85b116e0068ffecf92fbe08fc27bd4c5ba902997f1a367db0bfe8d
+# due to flint and ntl being nocross
+nocross=yes