anchor.diff:  { lib
   , stdenv
   , buildPythonPackage
  -, fetchPypi
  +, fetchFromGitHub
   , html5lib
   , isodate
   , networkx
  
positive.code:     nose
      tabulate
      pytestCheckHook
    ];
  
    disabledTests = [
  
negative.code: 
    disabled = pythonOlder "3.7";
  
    src = fetchFromGitHub {
      owner = "RDFLib";
      repo = pname;
      rev = version;
      hash = "sha256:1ih7vx4i16np1p8ig5faw74apmbm7kgyj9alya521yvzid6d7pzd";
    };
  
    propagatedBuildInputs = [
  