anchor.diff:  
   buildPythonPackage rec {
     pname = "jupyter_server";
  -  version = "1.11.2";
  -  disabled = pythonOlder "3.6";
  +  version = "1.17.1";
  +  disabled = pythonOlder "3.7";
   
     src = fetchPypi {
       inherit pname version;
  -    sha256 = "c1f32e0c1807ab2de37bf70af97a36b4436db0bc8af3124632b1f4441038bf95";
  +    sha256 = "a36781656645ae17b12819a49ace377c045bf633823b3e4cd4b0c88c01e7711b";
     };
  -
  -  patches = [ (fetchpatch
  -    { name = "Normalize-file-name-and-path.patch";
  -      url = "https://github.com/jupyter-server/jupyter_server/pull/608/commits/345e26cdfd78651954b68708fa44119c2ac0dbd5.patch";
  -      sha256 = "1kqz3dyh2w0h1g1fbvqa13q17hb6y32694rlaasyg213mq6g4k32";
  -    })
  -  ];
   
     propagatedBuildInputs = [
       argon2-cffi
  
positive.code: 
    checkInputs = [
      ipykernel
      pytestCheckHook
      pytest-tornasync
      requests
    ];
  
negative.code:     export PATH=$out/bin:$PATH
    '';
  
    disabledTests = [
      "test_cull_idle"
    ] ++ lib.optionals stdenv.isDarwin [
      # attempts to use trashcan, build env doesn't allow this
      "test_delete"
    ];
  
    disabledTestPaths = [
      "tests/services/kernels/test_api.py"
      "tests/services/sessions/test_api.py"
    ];
  
    __darwinAllowLocalNetworking = true;
  