anchor.diff:  { lib
   , fetchFromGitHub
   , buildPythonPackage
  +, certifi
   , geckodriver
   , pytestCheckHook
   , pythonOlder
  
positive.code:     repo = "selenium";
      # check if there is a newer tag with or without -python suffix
      rev = "refs/tags/selenium-${version}";
      hash = "sha256-K90CQYTeX9GKpP0ahxLx2HO5HG0P6MN7jeWmHtfiOns=";
    };
  
    postPatch = ''
  
negative.code:   '';
  
    propagatedBuildInputs = [
      certifi
      trio
      trio-websocket
      urllib3
    ] ++ urllib3.optional-dependencies.socks;
  
    checkInputs = [
      pytestCheckHook
  