anchor.diff:  
       # numba tries to write to HOME directory
       export HOME=$TMPDIR
  +
  +    for file in $(grep -rl 'python TTS/bin' tests); do
  +      substituteInPlace "$file" \
  +        --replace "python TTS/bin" "${python3.interpreter} $out/lib/${python3.libPrefix}/site-packages/TTS/bin"
  +    done
     '';
   
     disabledTestPaths = [
       # requires tensorflow
       "tests/test_tacotron2_tf_model.py"
  -    "tests/test_vocoder_tf_melgan_generator.py"
  -    "tests/test_vocoder_tf_pqmf.py"
  +    "tests/vocoder_tests/test_vocoder_tf_pqmf.py"
  +    "tests/vocoder_tests/test_vocoder_tf_melgan_generator.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:     "test_torch_stft"
      "test_stft_loss"
      "test_multiscale_stft_loss"
      # assert tensor(1.1904e-07, dtype=torch.float64) <= 0
      "test_parametrized_gan_dataset"
      # RuntimeError: expected scalar type Double but found Float
      "test_speaker_embedding"
      # Requires network acccess to download models
      "test_synthesize"
    ];
  
negative.code:   '';
  
    checkInputs = with python3Packages; [
      pytest-sugar
      pytestCheckHook
    ];
  
  