anchor.diff:  { stdenv
   , buildPythonPackage
   , fetchPyPi
  +, lib
   
   , attrs
   , docutils
  
positive.code:     six
    ];
  
    meta = with stdenv.lib; {
      maintainers = with maintainers; [
        wkennington
      ];
  
negative.code: }:
  
  let
    version = "0.6.0";
  in
  buildPythonPackage {
    name = "Automat-${version}";
  