84 lines
2.2 KiB
Nix
84 lines
2.2 KiB
Nix
{ lib
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, stdenv
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, buildPythonPackage
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, isPyPy
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, fetchPypi
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, setuptools
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, pytestCheckHook
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, libffi
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, pkg-config
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, pycparser
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, pythonAtLeast
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}:
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if isPyPy then null else buildPythonPackage rec {
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pname = "cffi";
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version = "1.16.0";
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pyproject = true;
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src = fetchPypi {
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inherit pname version;
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hash = "sha256-vLPvQ+WGZbvaL7GYaY/K5ndkg+DEpjGqVkeAbCXgLMA=";
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};
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patches = [
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#
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# Trusts the libffi library inside of nixpkgs on Apple devices.
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#
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# Based on some analysis I did:
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#
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# https://groups.google.com/g/python-cffi/c/xU0Usa8dvhk
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#
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# I believe that libffi already contains the code from Apple's fork that is
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# deemed safe to trust in cffi.
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#
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./darwin-use-libffi-closures.diff
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] ++ lib.optionals (stdenv.cc.isClang && lib.versionAtLeast (lib.getVersion stdenv.cc) "13") [
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# -Wnull-pointer-subtraction is enabled with -Wextra. Suppress it to allow the following tests
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# to run and pass when cffi is built with newer versions of clang:
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# - testing/cffi1/test_verify1.py::test_enum_usage
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# - testing/cffi1/test_verify1.py::test_named_pointer_as_argument
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./clang-pointer-substraction-warning.diff
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];
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postPatch = lib.optionalString stdenv.isDarwin ''
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# Remove setup.py impurities
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substituteInPlace setup.py \
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--replace "'-iwithsysroot/usr/include/ffi'" "" \
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--replace "'/usr/include/ffi'," "" \
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--replace '/usr/include/libffi' '${lib.getDev libffi}/include'
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'';
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nativeBuildInputs = [
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pkg-config
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setuptools
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];
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buildInputs = [
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libffi
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];
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propagatedBuildInputs = [
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pycparser
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];
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# The tests use -Werror but with python3.6 clang detects some unreachable code.
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env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang
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"-Wno-unused-command-line-argument -Wno-unreachable-code -Wno-c++11-narrowing";
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doCheck = !stdenv.hostPlatform.isMusl;
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nativeCheckInputs = [
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pytestCheckHook
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];
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meta = with lib; {
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changelog = "https://github.com/python-cffi/cffi/releases/tag/v${version}";
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description = "Foreign Function Interface for Python calling C code";
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downloadPage = "https://github.com/python-cffi/cffi";
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homepage = "https://cffi.readthedocs.org/";
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license = licenses.mit;
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maintainers = teams.python.members;
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};
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}
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