nixpkgs/pkgs/development/python-modules/cffi/default.nix

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{ stdenv, buildPythonPackage, isPyPy, fetchPypi, libffi, pycparser, pytest }:
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if isPyPy then null else buildPythonPackage rec {
pname = "cffi";
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version = "1.12.1";
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src = fetchPypi {
inherit pname version;
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sha256 = "9b6f7ba4e78c52c1a291d0c0c0bd745d19adde1a9e1c03cb899f0c6efd6f8033";
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};
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outputs = [ "out" "dev" ];
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propagatedBuildInputs = [ libffi pycparser ];
checkInputs = [ pytest ];
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# On Darwin, the cffi tests want to hit libm a lot, and look for it in a global
# impure search path. It's obnoxious how much repetition there is, and how difficult
# it is to get it to search somewhere else (since we do actually have a libm symlink in libSystem)
prePatch = stdenv.lib.optionalString stdenv.isDarwin ''
substituteInPlace testing/cffi0/test_parsing.py \
--replace 'lib_m = "m"' 'lib_m = "System"' \
--replace '"libm" in name' '"libSystem" in name'
substituteInPlace testing/cffi0/test_unicode_literals.py --replace 'lib_m = "m"' 'lib_m = "System"'
substituteInPlace testing/cffi0/test_zdistutils.py --replace 'self.lib_m = "m"' 'self.lib_m = "System"'
substituteInPlace testing/cffi1/test_recompiler.py --replace 'lib_m = "m"' 'lib_m = "System"'
substituteInPlace testing/cffi0/test_function.py --replace "lib_m = 'm'" "lib_m = 'System'"
substituteInPlace testing/cffi0/test_verify.py --replace "lib_m = ['m']" "lib_m = ['System']"
'';
# The tests use -Werror but with python3.6 clang detects some unreachable code.
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NIX_CFLAGS_COMPILE = stdenv.lib.optionals stdenv.cc.isClang [ "-Wno-unused-command-line-argument" "-Wno-unreachable-code" ];
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doCheck = !stdenv.hostPlatform.isMusl; # TODO: Investigate
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checkPhase = ''
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py.test -k "not test_char_pointer_conversion"
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'';
meta = with stdenv.lib; {
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maintainers = with maintainers; [ domenkozar lnl7 ];
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homepage = https://cffi.readthedocs.org/;
license = with licenses; [ mit ];
description = "Foreign Function Interface for Python calling C code";
};
}