anchor.diff:    # models, which doesn't work in the sandbox.
     # avoid tests which need special packages
     pytestFlagsArray = [
  +    "--ignore=tests/ignite/contrib/handlers/test_clearml_logger.py"
  +    "--ignore=tests/ignite/contrib/handlers/test_lr_finder.py"
       "--ignore=tests/ignite/contrib/handlers/test_trains_logger.py"
  +    "--ignore=tests/ignite/metrics/nlp/test_bleu.py"
  +    "--ignore=tests/ignite/metrics/nlp/test_rouge.py"
       "--ignore=tests/ignite/metrics/test_dill.py"
  +    "--ignore=tests/ignite/metrics/test_psnr.py"
       "--ignore=tests/ignite/metrics/test_ssim.py"
       "tests/"
     ];
  
positive.code:     owner = "pytorch";
      repo = pname;
      rev = "v${version}";
      sha256 = "057v8v5p2picmgiidr9lzjbh7nj54pv95m6lyya3y7dw4vzaamij";
    };
  
    checkInputs = [ pytestCheckHook matplotlib mock pytest-xdist ];
  
negative.code:   # disable tests which need specific packages
    disabledTests = [
      "idist"
      "mlflow"
      "tensorboard"
      "test_integration"
      "test_output_handler" # needs mlflow
      "test_pbar" # slight output differences
      "test_setup_clearml_logging"
      "test_setup_neptune"
      "test_setup_plx"
      "test_write_results"
      "trains"
      "visdom"
    ];
  
    meta = with lib; {
  