{ lib, stdenv, buildPythonPackage, fetchPypi, fetchpatch, setuptools, python, pkg-config, gdb, numpy, ncurses, }: 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.hostPlatform.isAarch64 [ "numpy_memoryview" ] ++ lib.optionals stdenv.hostPlatform.isi686 [ "future_division" "overflow_check_longlong" ]; in buildPythonPackage rec { pname = "cython"; version = "0.29.36"; pyproject = true; src = fetchPypi { pname = "Cython"; inherit version; hash = "sha256-QcDP0tdU44PJ7rle/8mqSrhH0Ml0cHfd18Dctow7wB8="; }; nativeBuildInputs = [ pkg-config setuptools ]; nativeCheckInputs = [ gdb numpy ncurses ]; LC_ALL = "en_US.UTF-8"; patches = [ # backport Cython 3.0 trashcan support (https://github.com/cython/cython/pull/2842) to 0.X series. # it does not affect Python code unless the code explicitly uses the feature. # trashcan support is needed to avoid stack overflows during object deallocation in sage (https://trac.sagemath.org/ticket/27267) ./trashcan.patch # The above commit introduces custom trashcan macros, as well as # compiler changes to use them in Cython-emitted code. The latter # change is still useful, but the former has been upstreamed as of # Python 3.8, and the patch below makes Cython use the upstream # trashcan macros whenever available. This is needed for Python # 3.11 support, because the API used in Cython's implementation # changed: https://github.com/cython/cython/pull/4475 (fetchpatch { name = "disable-trashcan.patch"; url = "https://github.com/cython/cython/commit/e337825cdcf5e94d38ba06a0cb0188e99ce0cc92.patch"; hash = "sha256-q0f63eetKrDpmP5Z4v8EuGxg26heSyp/62OYqhRoSso="; }) ]; 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.hostPlatform.isDarwin; # 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 = "Optimising static compiler for both the Python programming language and the extended Cython programming language"; homepage = "https://cython.org"; license = lib.licenses.asl20; }; }