anchor.diff:  , stdenv
   , lib
   , fetchFromGitHub
  -, python38
  +, python3
   , substituteAll
   , nix-update-script
     # To include additional plugins, pass them here as an overlay.
  
positive.code: 
                postPatch = let
                  ignoreVersionConstraints = [
                    "emoji"
                    "immutabledict"
                    "sentry-sdk"
                    "watchdog"
                  ];
                in
                  ''
  
negative.code:           self: super: {
              websocket-client = super.websocket-client.overridePythonAttrs (
                oldAttrs: rec {
                  version = "0.59.0";
                  src = oldAttrs.src.override {
                    inherit version;
                    sha256 = "0p0cz2mdissq7iw1n7jrmsfir0jfmgs1dvnpnrx477ffx9hbsxnk";
                  };
                  propagatedBuildInputs = with self; [
                    six
                    pysocks
                  ];
                  disabledTests = [
                    "testConnect"  # requires network access
                  ];
                }
              );
            }
  