anchor.diff:    propagatedBuildInputs = with python.pkgs; [
       anyascii
       coqpit
  +    coqui-trainer
       flask
       fsspec
       gdown
  
positive.code: in
  python.pkgs.buildPythonApplication rec {
    pname = "tts";
    version = "0.5.0";
    format = "setuptools";
  
    src = fetchFromGitHub {
      owner = "coqui-ai";
      repo = "TTS";
      rev = "v${version}";
      sha256 = "sha256-9fNYNhHS9wqrk2bZnrkkGU1OaDu/16RA8fz+Zj9xsyQ=";
    };
  
    postPatch = let
  
negative.code:     changelog = "https://github.com/coqui-ai/TTS/releases/tag/v${version}";
      description = "Deep learning toolkit for Text-to-Speech, battle-tested in research and production";
      license = licenses.mpl20;
      maintainers = teams.tts.members;
    };
  }
  