anchor.diff:      docutils
       od
       sigtools
  -    six
     ];
   
     passthru.optional-dependencies = {
  
positive.code:     unittest2
    ];
  
    pythonImportsCheck = [ "clize" ];
  
    meta = with lib; {
      description = "Command-line argument parsing for Python";
  
negative.code:   version = "5.0.0";
    format = "pyproject";
  
    disabled = pythonOlder "3.7";
  
    src = fetchPypi {
      inherit pname version;
      hash = "sha256-/cFpEvAN/Movd38xaE53Y+D9EYg/SFyHeqtlVUo1D0I=";
    };
  
    nativeBuildInputs = [
      setuptools
  