{ lib, stdenv, buildPythonPackage, fetchPypi, pytest, hypothesis, zope_interface , pympler, coverage, six, clang }: buildPythonPackage rec { pname = "attrs"; version = "18.2.0"; src = fetchPypi { inherit pname version; sha256 = "10cbf6e27dbce8c30807caf056c8eb50917e0eaafe86347671b57254006c3e69"; }; # macOS needs clang for testing checkInputs = [ pytest hypothesis zope_interface pympler coverage six ] ++ lib.optionals (stdenv.isDarwin) [ clang ]; checkPhase = '' py.test ''; # To prevent infinite recursion with pytest doCheck = false; meta = with lib; { description = "Python attributes without boilerplate"; homepage = https://github.com/hynek/attrs; license = licenses.mit; }; }