anchor.diff:  , build
   , python
   , requests
  -, toml
   , virtualenv
   }:
   
   let
     pname = "hatchling";
  -  version = "0.25.0";
  +  version = "1.0.0";
   in
   buildPythonPackage {
     inherit pname version;
  
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
  