anchor.diff:        twisted
         mock
         trollius
  -      funcsigs
         gevent
  +      setuptools_scm
       ];
   
       propagatedBuildInputs = with self; [
  
positive.code:   };
  
    apscheduler = buildPythonPackage rec {
      name = "APScheduler-3.0.4";
      disabled = !isPy27;
  
      src = pkgs.fetchurl {
        url = "mirror://pypi/A/APScheduler/${name}.tar.gz";
        sha256 = "1ljjhn6cv8b1pccsi3mgc887ypi2vim317r9p0zh0amd0bhkk6wb";
      };
  
      buildInputs = with self; [
  
negative.code:       pytz
        tzlocal
        futures
        funcsigs
      ];
  
      meta = with pkgs.stdenv.lib; {
  