{ lib, buildPythonPackage, fetchPypi, python }: buildPythonPackage rec { pname = "pytz"; version = "2018.9"; src = fetchPypi { inherit pname version; sha256 = "d5f05e487007e29e03409f9398d074e158d920d36eb82eaf66fb1136b0c5374c"; }; checkPhase = '' ${python.interpreter} -m unittest discover -s pytz/tests ''; meta = with lib; { description = "World timezone definitions, modern and historical"; homepage = "https://pythonhosted.org/pytz"; license = licenses.mit; maintainers = with maintainers; [ dotlambda ]; }; }