{stdenv, python27Packages}: python27Packages.buildPythonPackage rec {
  pname = "pytz";
  version = "2017.2";
  format = "setuptools";

  src = python27Packages.fetchPypi {
    inherit pname version;
    extension = "zip";
    hash = "sha256-9cBW6PYtRbqCFeXLj1DfzLGYtLn76oUAZ080Q+RolYk=";
  };

  propagatedBuildInputs = [python27Packages.setuptools];
}