anchor.diff:  
     meta = with lib; {
       description = "Command line utility to show dependency tree of packages";
  -    homepage = "https://github.com/naiquevin/pipdeptree";
  +    homepage = "https://github.com/tox-dev/pipdeptree";
  +    changelog = "https://github.com/tox-dev/pipdeptree/releases/tag/${version}";
       license = licenses.mit;
       maintainers = with maintainers; [ charlesbaynham ];
     };
  
positive.code:   ];
  
    passthru.optional-dependencies = {
      graphviz = [ graphviz ];
    };
  
    checkInputs = [
  
negative.code:   disabled = pythonOlder "3.7";
  
    src = fetchFromGitHub {
      owner = "tox-dev";
      repo = "pipdeptree";
      rev = "refs/tags/${version}";
      hash = "sha256-ivqu9b+4FhGa5y+WnKRk4nF6MR4Vj62pSs2d7ycIZMc=";
  