anchor.diff:      owner = "executablebooks";
       repo = pname;
       rev = "v${version}";
  -    hash = "sha256-GA7P2I8N+i2ISsVgx58zyhrfKMcZ7pL4X9T/trbsr1Y=";
  +    sha256 = "0h7rn3rcqfwmnqs97qczwkw9w5g4df8bgn6sw7k149svfqgrkf56";
     };
  -
  -  patches = [
  -    (fetchpatch {
  -      # :arrow_up: UPGRADE: attrs -> v21 (#165)
  -      # https://github.com/executablebooks/markdown-it-py/pull/165
  -      url = "https://github.com/executablebooks/markdown-it-py/commit/78381ffe1a651741594dc93e693b761422512fa2.patch";
  -      sha256 = "1kxhblpi4sycrs3rv50achr8g0wlgq33abg2acra26l736hlsya1";
  -    })
  -  ];
   
     propagatedBuildInputs = [ attrs linkify-it-py ]
       ++ lib.optional (pythonOlder "3.8") typing-extensions;
  
positive.code: 
  buildPythonPackage rec {
    pname = "markdown-it-py";
    version = "1.0.0";
    format = "pyproject";
  
    disabled = pythonOlder "3.6";
  
negative.code: { lib
  , buildPythonPackage
  , fetchFromGitHub
  , pytestCheckHook
  , pythonOlder
  , attrs
  