anchor.diff:  
     disabledTestPaths = [
       # requires tensorflow
  -    "tests/test_tacotron2_tf_model.py"
       "tests/vocoder_tests/test_vocoder_tf_pqmf.py"
       "tests/vocoder_tests/test_vocoder_tf_melgan_generator.py"
  +    "tests/tts_tests/test_tacotron2_tf_model.py"
       # RuntimeError: fft: ATen not compiled with MKL support
       "tests/vocoder_tests/test_fullband_melgan_train.py"
       "tests/vocoder_tests/test_hifigan_train.py"
       "tests/vocoder_tests/test_melgan_train.py"
       "tests/vocoder_tests/test_multiband_melgan_train.py"
       "tests/vocoder_tests/test_parallel_wavegan_train.py"
  -
     ];
   
     meta = with lib; {
  
positive.code: #
  # If you upgrade from an old version you may have to delete old models from ~/.local/share/tts
  # Also note that your tts version might not support all available models so check:
  #   https://github.com/coqui-ai/TTS/releases/tag/v0.0.14
  #
  # For now, for deployment check the systemd unit in the pull request:
  #   https://github.com/NixOS/nixpkgs/pull/103851#issue-521121136
  
  python3Packages.buildPythonApplication rec {
    pname = "tts";
    version = "0.0.14";
  
    src = fetchFromGitHub {
      owner = "coqui-ai";
      repo = "TTS";
      rev = "v${version}";
      sha256 = "0cl0ri90mx0y19fmqww73lp5nv6qkpc45rm4157i7p6q6llajdhp";
    };
  
    postPatch = ''
  
negative.code:     scipy
      soundfile
      tensorboardx
      tensorflow
      tqdm
      umap-learn
      unidic-lite
    ];
  
    postInstall = ''
  