0b499eb862
cffi uses a technique to find the offset of a struct that causes newer clangs to issue a warning regarding null pointer subtraction. This patch silences the warning, so cffi can build.
104 lines
3.4 KiB
Nix
104 lines
3.4 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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, fetchpatch
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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 = "1.15.1";
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src = fetchPypi {
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inherit pname version;
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hash = "sha256-1AC/uaN7E1ElPLQCZxzqfom97MKU6AFqcH9tHYrJNPk=";
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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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(fetchpatch {
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# Drop py.code usage from tests, no longer depend on the deprecated py package
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url = "https://foss.heptapod.net/pypy/cffi/-/commit/9c7d865e17ec16a847090a3e0d1498b698b99756.patch";
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excludes = [
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"README.md"
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"requirements.txt"
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];
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hash = "sha256-HSuLLIYXXGGCPccMNLV7o1G3ppn2P0FGCrPjqDv2e7k=";
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})
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(fetchpatch {
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# Replace py.test usage with pytest
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url = "https://foss.heptapod.net/pypy/cffi/-/commit/bd02e1b122612baa74a126e428bacebc7889e897.patch";
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excludes = [
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"README.md"
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"requirements.txt"
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];
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hash = "sha256-+2daRTvxtyrCPimOEAmVbiVm1Bso9hxGbaAbd03E+ws=";
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})
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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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] ++ lib.optionals (pythonAtLeast "3.11") [
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# Fix test that failed because python seems to have changed the exception format in the
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# final release. This patch should be included in the next version and can be removed when
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# it is released.
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(fetchpatch {
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url = "https://foss.heptapod.net/pypy/cffi/-/commit/8a3c2c816d789639b49d3ae867213393ed7abdff.diff";
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hash = "sha256-3wpZeBqN4D8IP+47QDGK7qh/9Z0Ag4lAe+H0R5xCb1E=";
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})
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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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buildInputs = [ libffi ];
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nativeBuildInputs = [ pkg-config ];
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propagatedBuildInputs = [ 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
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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 = [ pytestCheckHook ];
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disabledTests = lib.optionals stdenv.isDarwin [
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# AssertionError: cannot seem to get an int[10] not completely cleared
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# https://foss.heptapod.net/pypy/cffi/-/issues/556
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"test_ffi_new_allocator_1"
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];
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meta = with lib; {
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maintainers = with maintainers; [ domenkozar lnl7 ];
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homepage = "https://cffi.readthedocs.org/";
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license = licenses.mit;
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description = "Foreign Function Interface for Python calling C code";
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};
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}
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