1 files changed, 118 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/applications/science/math/singular/default.nix b/nixpkgs/pkgs/applications/science/math/singular/default.nix
new file mode 100644
index 000000000000..24063216db04
--- /dev/null
+++ b/nixpkgs/pkgs/applications/science/math/singular/default.nix
@@ -0,0 +1,118 @@
+{ stdenv, fetchurl, gmp, bison, perl, ncurses, readline, coreutils, pkgconfig
+, lib
+, fetchpatch
+, autoreconfHook
+, file
+, flint
+, ntl
+, cddlib
+, enableFactory ? true
+, enableGfanlib ? true
+}:
+
+stdenv.mkDerivation rec {
+  name = "singular-${version}";
+  version = "4.1.1p2";
+
+  src = let
+    # singular sorts its tarballs in directories by base release (without patch version)
+    # for example 4.1.1p1 will be in the directory 4-1-1
+    baseVersion = builtins.head (lib.splitString "p" version);
+    urlVersion = builtins.replaceStrings [ "." ] [ "-" ] baseVersion;
+  in
+  fetchurl {
+    url = "http://www.mathematik.uni-kl.de/ftp/pub/Math/Singular/SOURCES/${urlVersion}/singular-${version}.tar.gz";
+    sha256 = "07x9kri8vl4galik7lr6pscq3c51n8570pyw64i7gbj0m706f7wf";
+  };
+
+  configureFlags = [
+    "--with-ntl=${ntl}"
+  ] ++ lib.optionals enableFactory [
+    "--enable-factory"
+  ] ++ lib.optionals enableGfanlib [
+    "--enable-gfanlib"
+  ];
+
+  postUnpack = ''
+    patchShebangs .
+  '';
+
+  patches = [
+    # NTL error handler was introduced in the library part, preventing users of
+    # the library from implementing their own error handling
+    # https://www.singular.uni-kl.de/forum/viewtopic.php?t=2769
+    (fetchpatch {
+      name = "move_error_handler_out_of_libsingular.patch";
+      # rebased version of https://github.com/Singular/Sources/commit/502cf86d0bb2a96715be6764774b64a69c1ca34c.patch
+      url = "https://git.sagemath.org/sage.git/plain/build/pkgs/singular/patches/singular-ntl-error-handler.patch?h=50b9ae2fd233c30860e1cbb3e63a26f2cc10560a";
+      sha256 = "0vgh4m9zn1kjl0br68n04j4nmn5i1igfn28cph0chnwf7dvr9194";
+    })
+  ];
+
+  # For reference (last checked on commit 75f460d):
+  # https://github.com/Singular/Sources/blob/spielwiese/doc/Building-Singular-from-source.md
+  # https://github.com/Singular/Sources/blob/spielwiese/doc/external-packages-dynamic-modules.md
+  buildInputs = [
+    # necessary
+    gmp
+    # by upstream recommended but optional
+    ncurses
+    readline
+    ntl
+    flint
+  ] ++ lib.optionals enableGfanlib [
+    cddlib
+  ];
+  nativeBuildInputs = [
+    bison
+    perl
+    pkgconfig
+    autoreconfHook
+  ];
+
+  preAutoreconf = ''
+    find . -type f -readable -writable -exec sed \
+      -e 's@/bin/rm@${coreutils}&@g' \
+      -e 's@/bin/uname@${coreutils}&@g' \
+      -e 's@/usr/bin/file@${file}/bin/file@g' \
+      -i '{}' ';'
+  '';
+
+  hardeningDisable = lib.optional stdenv.isi686 "stackprotector";
+
+  # The Makefile actually defaults to `make install` anyway
+  buildPhase = ''
+    # do nothing
+  '';
+
+  installPhase = ''
+    mkdir -p "$out"
+    cp -r Singular/LIB "$out/lib"
+    make install
+
+    # Make sure patchelf picks up the right libraries
+    rm -rf libpolys factory resources omalloc Singular
+  '';
+
+  # simple test to make sure singular starts and finds its libraries
+  doInstallCheck = true;
+  installCheckPhase = ''
+    "$out/bin/Singular" -c 'LIB "freegb.lib"; exit;'
+    if [ $? -ne 0 ]; then
+        echo >&2 "Error loading the freegb library in Singular."
+        exit 1
+    fi
+  '';
+
+  enableParallelBuilding = true;
+
+  meta = with lib; {
+    description = "A CAS for polynomial computations";
+    maintainers = with maintainers; [ raskin timokau ];
+    # 32 bit x86 fails with some link error: `undefined reference to `__divmoddi4@GCC_7.0.0'`
+    platforms = subtractLists platforms.i686 platforms.linux;
+    license = licenses.gpl3; # Or GPLv2 at your option - but not GPLv4
+    homepage = http://www.singular.uni-kl.de;
+    downloadPage = "http://www.mathematik.uni-kl.de/ftp/pub/Math/Singular/SOURCES/";
+  };
+}