nixpkgs/pkgs/os-specific/linux/libcap-ng/default.nix

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{ stdenv, fetchurl, swig ? null, python2 ? null, python3 ? null }:
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assert python2 != null || python3 != null -> swig != null;
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stdenv.mkDerivation rec {
pname = "libcap-ng";
# When updating make sure to test that the version with
# all of the python bindings still works
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version = "0.7.10";
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src = fetchurl {
url = "${meta.homepage}/${pname}-${version}.tar.gz";
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sha256 = "1gzzy12agfa9ddipdf72h9y68zqqnvsjjylv4vnq6hj4w2safk58";
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};
nativeBuildInputs = [ swig ];
buildInputs = [ python2 python3 ];
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postPatch = ''
function get_header() {
echo -e "#include <$1>" | gcc -M -xc - | tr ' ' '\n' | grep "$1" | head -n 1
}
# Fix some hardcoding of header paths
sed -i "s,/usr/include/linux/capability.h,$(get_header linux/capability.h),g" bindings/python{,3}/Makefile.in
'';
configureFlags = [
(if python2 != null then "--with-python" else "--without-python")
(if python3 != null then "--with-python3" else "--without-python3")
];
meta = let inherit (stdenv.lib) platforms licenses; in {
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description = "Library for working with POSIX capabilities";
homepage = https://people.redhat.com/sgrubb/libcap-ng/;
platforms = platforms.linux;
license = licenses.lgpl21;
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};
}