anchor.diff:      })
     ];
   
  -  # For failing tests, see https://github.com/ipython/ipykernel/issues/387
  -  checkPhase = ''
  -    HOME=$(mktemp -d) pytest ipykernel -k "not (test_sys_path or test_sys_path_profile_dir or test_complete)"
  +  checkInputs = [ pytestCheckHook nose ];
  +  dontUseSetuptoolsCheck = true;
  +  preCheck = ''
  +    export HOME=$(mktemp -d)
     '';
   
     # Some of the tests use localhost networking.
  
positive.code:     sha256 = "04jx6ihj3zpj4c7acqa14gl37mpdnbgmfm4nvv97xkjc1cz920xm";
    };
  
    checkInputs = [ pytest nose ];
    propagatedBuildInputs = [ ipython jupyter_client traitlets tornado ];
  
    # https://github.com/ipython/ipykernel/pull/377
  
negative.code: , traitlets
  , tornado
  , pythonOlder
  , pytestCheckHook
  , nose
  }:
  
  