Lots of python packages seem to ship their source distributions with generated code. In recent cython versions there is a way to force a regeneration of these files and using it sounds generally sounds like a good thing. If it turns out, that this causes problems on individual packages, setting `dontForceRegenCython` will prevent the regeneration. Added in 3.0.0a11 and backported to 2.9.34, so both cython versions we ship right now support this flag.
89 lines
3 KiB
Nix
89 lines
3 KiB
Nix
{ lib
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, stdenv
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, buildPythonPackage
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, fetchPypi
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, fetchpatch
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, python
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, pkg-config
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, gdb
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, numpy
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, ncurses
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}:
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let
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excludedTests = [ "reimport_from_subinterpreter" ]
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# cython's testsuite is not working very well with libc++
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# We are however optimistic about things outside of testsuite still working
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++ lib.optionals (stdenv.cc.isClang or false) [ "cpdef_extern_func" "libcpp_algo" ]
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# Some tests in the test suite isn't working on aarch64. Disable them for
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# now until upstream finds a workaround.
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# Upstream issue here: https://github.com/cython/cython/issues/2308
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++ lib.optionals stdenv.isAarch64 [ "numpy_memoryview" ]
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++ lib.optionals stdenv.isi686 [ "future_division" "overflow_check_longlong" ]
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;
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in buildPythonPackage rec {
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pname = "cython";
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version = "0.29.34";
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src = fetchPypi {
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pname = "Cython";
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inherit version;
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hash = "sha256-GQloj117Uhpgw5bSC7qeR6Gy0nhL+whUAeHh59KaKag=";
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};
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nativeBuildInputs = [
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pkg-config
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];
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nativeCheckInputs = [
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gdb numpy ncurses
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];
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LC_ALL = "en_US.UTF-8";
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patches = [
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# backport Cython 3.0 trashcan support (https://github.com/cython/cython/pull/2842) to 0.X series.
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# it does not affect Python code unless the code explicitly uses the feature.
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# trashcan support is needed to avoid stack overflows during object deallocation in sage (https://trac.sagemath.org/ticket/27267)
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./trashcan.patch
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# The above commit introduces custom trashcan macros, as well as
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# compiler changes to use them in Cython-emitted code. The latter
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# change is still useful, but the former has been upstreamed as of
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# Python 3.8, and the patch below makes Cython use the upstream
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# trashcan macros whenever available. This is needed for Python
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# 3.11 support, because the API used in Cython's implementation
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# changed: https://github.com/cython/cython/pull/4475
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(fetchpatch {
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name = "disable-trashcan.patch";
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url = "https://github.com/cython/cython/commit/e337825cdcf5e94d38ba06a0cb0188e99ce0cc92.patch";
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hash = "sha256-q0f63eetKrDpmP5Z4v8EuGxg26heSyp/62OYqhRoSso=";
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})
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];
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checkPhase = ''
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export HOME="$NIX_BUILD_TOP"
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${python.interpreter} runtests.py -j$NIX_BUILD_CORES \
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--no-code-style \
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${lib.optionalString (builtins.length excludedTests != 0)
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''--exclude="(${builtins.concatStringsSep "|" excludedTests})"''}
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'';
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# https://github.com/cython/cython/issues/2785
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# Temporary solution
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doCheck = false;
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# doCheck = !stdenv.isDarwin;
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# force regeneration of generated code in source distributions
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# https://github.com/cython/cython/issues/5089
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setupHook = ./setup-hook.sh;
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meta = {
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changelog = "https://github.com/cython/cython/blob/${version}/CHANGES.rst";
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description = "An optimising static compiler for both the Python programming language and the extended Cython programming language";
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homepage = "https://cython.org";
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license = lib.licenses.asl20;
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maintainers = with lib.maintainers; [ fridh ];
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};
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}
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