anchor.diff:      sha256 = "0ki0njhmz1i3pkpr3y6h6ac7p5qh1kih06mknc2s18mfw34f2l55";
     };
   
  +  postPatch = ''
  +    substituteInPlace setup.py \
  +      --replace "'pytest-runner'" ""
  +  '';
  +
     propagatedBuildInputs = [ torch ];
   
  -  checkInputs = [ pytest-runner pytestCheckHook ];
  +  checkInputs = [ pytestCheckHook ];
     disabledTests = [
       "test_inplace_on_requires_grad"
       "test_input_requiring_grad"
  
positive.code: { lib
  , buildPythonPackage
  , fetchFromGitHub
  , isPy27
  , pytest-runner
  , pytestCheckHook
  , torch
  }:
  
negative.code:   pname = "torchgpipe";
    version = "0.0.7";
  
    disabled = pythonOlder "3.6";
  
    src = fetchFromGitHub {
      owner = "kakaobrain";
  