depot/third_party/nixpkgs/pkgs/development/python-modules/cython/default.nix

{ lib
, stdenv
, buildPythonPackage
, fetchPypi
, setuptools
, python
, pkg-config
, gdb
, numpy
, ncurses

# Reverse dependency
, sage
}:

let
  excludedTests = [ "reimport_from_subinterpreter" ]
    # cython's testsuite is not working very well with libc++
    # We are however optimistic about things outside of testsuite still working
    ++ lib.optionals (stdenv.cc.isClang or false) [ "cpdef_extern_func" "libcpp_algo" ]
    # Some tests in the test suite isn't working on aarch64. Disable them for
    # now until upstream finds a workaround.
    # Upstream issue here: https://github.com/cython/cython/issues/2308
    ++ lib.optionals stdenv.isAarch64 [ "numpy_memoryview" ]
    ++ lib.optionals stdenv.isi686 [ "future_division" "overflow_check_longlong" ]
  ;

in buildPythonPackage rec {
  pname = "cython";
  version = "3.0.10";
  pyproject = true;

  src = fetchPypi {
    pname = "Cython";
    inherit version;
    hash = "sha256-3MlnOTMfuFTc9QP5RgdXbP6EiAZsYcpQ39VYNvEy3pk=";
  };

  build-system = [
    pkg-config
    setuptools
  ];

  nativeCheckInputs = [
    gdb numpy ncurses
  ];

  env.LC_ALL = "en_US.UTF-8";

  checkPhase = ''
    export HOME="$NIX_BUILD_TOP"
    ${python.interpreter} runtests.py -j$NIX_BUILD_CORES \
      --no-code-style \
      ${lib.optionalString (builtins.length excludedTests != 0)
        ''--exclude="(${builtins.concatStringsSep "|" excludedTests})"''}
  '';

  # https://github.com/cython/cython/issues/2785
  # Temporary solution
  doCheck = false;
  # doCheck = !stdenv.isDarwin;

  passthru.tests = { inherit sage; };

  # force regeneration of generated code in source distributions
  # https://github.com/cython/cython/issues/5089
  setupHook = ./setup-hook.sh;

  meta = {
    changelog = "https://github.com/cython/cython/blob/${version}/CHANGES.rst";
    description = "An optimising static compiler for both the Python programming language and the extended Cython programming language";
    homepage = "https://cython.org";
    license = lib.licenses.asl20;
  };
}