nixpkgs/pkgs/by-name/si/singular/package.nix

{
  stdenv,
  fetchFromGitHub,
  gmp,
  bison,
  perl,
  ncurses,
  readline,
  coreutils,
  pkg-config,
  lib,
  autoreconfHook,
  buildPackages,
  sharutils,
  file,
  getconf,
  flint3,
  ntl,
  mpfr,
  cddlib,
  gfan,
  lrcalc,
  doxygen,
  graphviz,
  latex2html,
  texinfo,
  texliveSmall,
  enableDocs ? true,
}:

stdenv.mkDerivation rec {
  pname = "singular";
  version = "4.4.0p6";

  # since the tarball does not contain tests, we fetch from GitHub.
  src = fetchFromGitHub {
    owner = "Singular";
    repo = "Singular";

    # if a release is tagged (which sometimes does not happen), it will
    # be in the format below.
    rev = "Release-${lib.replaceStrings [ "." ] [ "-" ] version}";
    hash = "sha256-QxMMMnXaWe+0ogA6+3eOtdROb0RolSveya6DIx97/YY=";

    # the repository's .gitattributes file contains the lines "/Tst/
    # export-ignore" and "/doc/ export-ignore" so some directories are
    # not included in the tarball downloaded by fetchzip.
    forceFetchGit = true;
  };

  configureFlags =
    [
      "--enable-gfanlib"
      "--with-ntl=${ntl}"
      "--with-flint=${flint3}"
    ]
    ++ lib.optionals enableDocs [
      "--enable-doc-build"
    ];

  prePatch = ''
    # don't let the tests depend on `hostname`
    substituteInPlace Tst/regress.cmd --replace 'mysystem_catch("hostname")' 'nix_test_runner'

    patchShebangs .
  '';

  # For reference (last checked on commit 75f460d):
  # https://github.com/Singular/Singular/blob/spielwiese/doc/Building-Singular-from-source.md
  # https://github.com/Singular/Singular/blob/spielwiese/doc/external-packages-dynamic-modules.md
  buildInputs = [
    # necessary
    gmp
    flint3
    # by upstream recommended but optional
    ncurses
    readline
    ntl
    mpfr
    lrcalc
    # for gfanlib
    gfan
    cddlib
  ];

  nativeBuildInputs =
    [
      bison
      perl
      pkg-config
      autoreconfHook
      sharutils # needed for regress.cmd install checks
    ]
    ++ lib.optionals enableDocs [
      doxygen
      graphviz
      latex2html
      texinfo
      texliveSmall
    ]
    ++ lib.optionals stdenv.hostPlatform.isDarwin [ getconf ];
  depsBuildBuild = [ buildPackages.stdenv.cc ];

  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.hostPlatform.isi686 "stackprotector";

  doCheck = true; # very basic checks, does not test any libraries

  installPhase =
    ''
      # clean up any artefacts a previous non-sandboxed docbuild may have left behind
      rm /tmp/conic.log /tmp/conic.tex /tmp/tropicalcurve*.tex || true
      make install
    ''
    + lib.optionalString enableDocs ''
      # Sage uses singular.info, which is not installed by default
      mkdir -p $out/share/info
      cp doc/singular.info $out/share/info
    ''
    + ''
      # Make sure patchelf picks up the right libraries
      rm -rf libpolys factory resources omalloc Singular
    '';

  # singular tests are a bit complicated, see
  # https://github.com/Singular/Singular/tree/spielwiese/Tst
  # https://www.singular.uni-kl.de/forum/viewtopic.php?f=10&t=2773
  testsToRun = [
    "Old/universal.lst"
    "Buch/buch.lst"
    "Plural/short.lst"
    "Old/factor.tst"
    # tests that require gfanlib
    # requires "DivRemIdU", a syzextra (undocumented) command
    "Short/ok_s.lst"
  ];

  # simple test to make sure singular starts and finds its libraries
  doInstallCheck = true;
  installCheckPhase = ''
    # Very basic sanity check to make sure singular starts and finds its libraries.
    # This is redundant with the below tests. It is only kept because the singular test
    # runner is a bit complicated. In case we decide to give up those tests in the future,
    # this will still be useful. It takes barely any time.
    "$out/bin/Singular" -c 'LIB "freegb.lib"; exit;'
    if [ $? -ne 0 ]; then
        echo >&2 "Error loading the freegb library in Singular."
        exit 1
    fi

    # Run the test suite
    cd Tst
    perl ./regress.cmd \
      -s "$out/bin/Singular" \
      ${lib.concatStringsSep " " (map lib.escapeShellArg testsToRun)} \
      2>"$TMPDIR/out-err.log"

    # unfortunately regress.cmd always returns exit code 0, so check stderr
    # https://www.singular.uni-kl.de/forum/viewtopic.php?f=10&t=2773
    if [[ -s "$TMPDIR/out-err.log" ]]; then
      cat "$TMPDIR/out-err.log"
      exit 1
    fi

    echo "Exit status $?"
  '';

  enableParallelBuilding = true;

  meta = with lib; {
    description = "CAS for polynomial computations";
    maintainers = teams.sage.members;
    # 32 bit x86 fails with some link error: `undefined reference to `__divmoddi4@GCC_7.0.0'`
    # https://www.singular.uni-kl.de:8002/trac/ticket/837
    platforms = subtractLists platforms.i686 platforms.unix;
    license = licenses.gpl3; # Or GPLv2 at your option - but not GPLv4
    homepage = "https://www.singular.uni-kl.de";
    downloadPage = "http://www.mathematik.uni-kl.de/ftp/pub/Math/Singular/SOURCES/";
    mainProgram = "Singular";
  };
}