anchor.diff:    };
   
     checkInputs = [
  -    pytest
  +    pytestCheckHook
       mock
     ];
   
  
positive.code: { lib, buildPythonPackage, fetchFromGitHub, isPy3k
  , filelock, protobuf, numpy, pytest, mock, typing-extensions
  , cupy, cudaSupport ? false
  }:
  
  
negative.code:     typing-extensions
    ] ++ lib.optionals cudaSupport [ cupy ];
  
    pytestFlagsArray = [ "tests/chainer_tests/utils_tests" ];
  
    disabledTests = [
      "gpu"
      "cupy"
      "ideep"
    ];
  
    meta = with lib; {
      description = "A flexible framework of neural networks for deep learning";
  