{ lib, buildPythonPackage, fetchPypi, python }: buildPythonPackage rec { pname = "pytz"; version = "2018.4"; src = fetchPypi { inherit pname version; sha256 = "c06425302f2cf668f1bba7a0a03f3c1d34d4ebeef2c72003da308b3947c7f749"; }; checkPhase = '' ${python.interpreter} -m unittest discover -s pytz/tests ''; meta = with lib; { description = "World timezone definitions, modern and historical"; homepage = "http://pythonhosted.org/pytz"; license = licenses.mit; maintainers = with maintainers; [ dotlambda ]; }; }