anchor.diff:  { buildPythonPackage
   , fetchPypi
   , pytest
  -, six
   , tqdm
   , pyyaml
   , docopt
  
positive.code:   };
  
    propagatedBuildInputs = [
      six
      tqdm
      pyyaml
      docopt
  
negative.code:     schema
      setuptools
      urllib3
    ];
  
    checkInputs = [ pytest responses glibcLocales ];
  
  