anchor.diff:  { stdenv
   , lib
   , buildPythonPackage
  -, fetchPypi
  +, fetchFromGitHub
   , pythonOlder
   , installShellFiles
   , astroid
   , isort
   , mccabe
  +, platformdirs
   , toml
   , pytest-benchmark
   , pytest-xdist
  
positive.code:     astroid
      isort
      mccabe
      toml
    ];
  
  
negative.code:     "-n auto"
    ];
  
    disabledTestPaths = [
      # tests miss multiple input files
      # FileNotFoundError: [Errno 2] No such file or directory
      "tests/pyreverse/test_writer.py"
    ];
  
    disabledTests = lib.optionals stdenv.isDarwin [
      "test_parallel_execution"
      "test_py3k_jobs_option"
  