anchor.diff:    ];
   
     meta = with lib; {
  -    description = "py.test xdist plugin for distributed testing and loop-on-failing modes";
  +    description = "Pytest xdist plugin for distributed testing and loop-on-failing modes";
       homepage = "https://github.com/pytest-dev/pytest-xdist";
       license = licenses.mit;
       maintainers = with maintainers; [ dotlambda ];
  
positive.code: 
  buildPythonPackage rec {
    pname = "pytest-xdist";
    version = "2.2.1";
    disabled = isPy27;
  
    src = fetchPypi {
      inherit pname version;
      sha256 = "718887296892f92683f6a51f25a3ae584993b06f7076ce1e1fd482e59a8220a2";
    };
  
    nativeBuildInputs = [ setuptools-scm ];
  
negative.code: { lib
  , buildPythonPackage
  , fetchPypi
  , pythonOlder
  , setuptools-scm
  , pytestCheckHook
  , filelock
  