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

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Nix

{ stdenv, python, buildPythonPackage
, protobuf, google_apputils, pyext, libcxx
, disabled, doCheck ? true }:
with stdenv.lib;
buildPythonPackage rec {
inherit (protobuf) name src version;
inherit disabled doCheck;
NIX_CFLAGS_COMPILE =
# work around python distutils compiling C++ with $CC
optional stdenv.isDarwin "-I${libcxx}/include/c++/v1"
++ optional (versionOlder protobuf.version "2.7.0") "-std=c++98";
propagatedBuildInputs = [ protobuf google_apputils ];
buildInputs = [ google_apputils pyext ];
prePatch = ''
while [ ! -d python ]; do
cd *
done
cd python
'';
preConfigure = optionalString (versionAtLeast protobuf.version "2.6.0") ''
export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION=cpp
export PROTOCOL_BUFFERS_PYTHON_IMPLEMENTATION_VERSION=2
'';
preBuild = optionalString (versionAtLeast protobuf.version "2.6.0") ''
${python}/bin/${python.executable} setup.py build_ext --cpp_implementation
'';
installFlags = optional (versionAtLeast protobuf.version "2.6.0")
"--install-option='--cpp_implementation'";
# the _message.so isn't installed, so we'll do that manually.
# if someone can figure out a less hacky way to get the _message.so to
# install, please do replace this.
postInstall = optionalString (versionAtLeast protobuf.version "2.6.0") ''
cp -v $(find build -name "_message*") $out/${python.sitePackages}/google/protobuf/pyext
'';
meta = {
description = "Protocol Buffers are Google's data interchange format";
homepage = https://developers.google.com/protocol-buffers/;
};
passthru.protobuf = protobuf;
}