{stdenv, python27Packages}: python27Packages.buildPythonPackage rec {
  pname = "certifi";
  version = "2017.4.17";
  format = "setuptools";

  src = python27Packages.fetchPypi {
    inherit pname version;
    extension = "tar.gz";
    hash = "sha256-91J+v3RhWCzpX3qeA90UHOgQ1AWQg09Owgzd1UI0wQo=";
  };

  propagatedBuildInputs = [python27Packages.setuptools];
}