83 lines
2.5 KiB
Nix
83 lines
2.5 KiB
Nix
{
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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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}:
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let
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ccVersion = lib.getVersion stdenv.cc;
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in
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if isPyPy then
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null
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else
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buildPythonPackage rec {
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pname = "cffi";
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version = "1.17.0";
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pyproject = true;
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src = fetchPypi {
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inherit pname version;
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hash = "sha256-8xV2JLdVi5FMsDn9Gvc15egEmofIF8whUQmtHId533Y=";
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};
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patches =
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[
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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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]
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++ lib.optionals (stdenv.cc.isClang && (ccVersion == "boot" || lib.versionAtLeast ccVersion "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 (including the bootstrap tools clang on Darwin):
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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.hostPlatform.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' '${lib.getDev libffi}/include'
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'';
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nativeBuildInputs = [ pkg-config ];
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build-system = [ setuptools ];
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buildInputs = [ libffi ];
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dependencies = [ pycparser ];
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# The tests use -Werror but with python3.6 clang detects some unreachable code.
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env.NIX_CFLAGS_COMPILE = lib.optionalString stdenv.cc.isClang "-Wno-unused-command-line-argument -Wno-unreachable-code -Wno-c++11-narrowing";
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doCheck = !stdenv.hostPlatform.isMusl;
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nativeCheckInputs = [ pytestCheckHook ];
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meta = with lib; {
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changelog = "https://github.com/python-cffi/cffi/releases/tag/v${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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