anchor.diff:  
   buildPythonPackage rec {
     pname = "glean-parser";
  -  version = "5.1.2";
  +  version = "6.1.1";
     format = "setuptools";
   
     disabled = pythonOlder "3.6";
  
positive.code:   src = fetchPypi {
      pname = "glean_parser";
      inherit version;
      hash = "sha256-PjOMNUnrz0kDfYEXv5Ni/9RIHn4Yylle6NJOK1Rb3SY=";
    };
  
    postPatch = ''
      substituteInPlace setup.py \
        --replace "pytest-runner" "" \
        --replace "MarkupSafe==2.0.1" "MarkupSafe"
    '';
  
    nativeBuildInputs = [
  
negative.code:     pytestCheckHook
    ];
  
    preCheck = ''
      export HOME=$TMPDIR
    '';
  
    disabledTests = [
      # Network access
      "test_validate_ping"
      # Fails since yamllint 1.27.x
      "test_yaml_lint"
    ];
  
    pythonImportsCheck = [
  