{stdenv, python27Packages, libffi, pycparser}: python27Packages.buildPythonPackage rec {
  pname = "cffi";
  version = "1.10.0";
  format = "setuptools";

  src = python27Packages.fetchPypi {
    inherit pname version;
    extension = "tar.gz";
    hash = "sha256-s7ApEesfatogOwdjupJCNGKbUVhvcqIfqsxjgmn0ztU=";
  };

  propagatedBuildInputs = [python27Packages.setuptools pycparser];
  buildInputs = [libffi];
}