mautrix-telegram: drop mautrix override

        };

        doCheck = false;

      });

      mautrix = super.mautrix.overridePythonAttrs (oldAttrs: rec {

        version = "0.20.0";

        src = oldAttrs.src.override {

          rev = "refs/tags/v${version}";

          hash = "sha256-op28CGpJBcCBiy0WXboaf4JeNRIMX6653QkAV6XW/yI=";

        };

        doCheck = false;

      });

    };

  };

in