{ buildPythonPackage, fetchPypi, lib, vcversioner, pytestrunner, mock, pytest, pytest-asyncio, pytest-trio, twisted, zipp, pyparsing, pyhamcrest, futures, attrs, stdenv, isPy27 }: buildPythonPackage rec { pname = "pyee"; version = "8.1.0"; src = fetchPypi { inherit pname version; sha256 = "92dacc5bd2bdb8f95aa8dd2585d47ca1c4840e2adb95ccf90034d64f725bfd31"; }; buildInputs = [ vcversioner ]; checkInputs = [ mock pyhamcrest pytest pytest-asyncio pytest-trio pytestrunner twisted ] ++ stdenv.lib.optional isPy27 [ attrs futures pyparsing zipp ]; meta = { description = "A port of Node.js's EventEmitter to python"; homepage = "https://github.com/jfhbrook/pyee"; license = lib.licenses.mit; maintainers = with lib.maintainers; [ kmein ]; }; }