anchor.diff:      build
       packaging
       requests
  -    toml
       virtualenv
     ];
   
  
positive.code:     packaging
      pathspec
      pluggy
      tomli
    ] ++ lib.optionals (pythonOlder "3.8") [
      importlib-metadata
    ];
  
    pythonImportsCheck = [
  
negative.code: 
    src = fetchPypi {
      inherit pname version;
      sha256 = "d235a5fa8aff89e8d9d6d4033594aa4c3bc00ec5e31d3e80c153bfcf951b4f98";
    };
  
    # listed in backend/src/hatchling/ouroboros.py
  