anchor.diff:          ''-e 's/${package}.*[<>=]+.*/${package}/g' \''
         ) relaxedConstraints)}
       requirements.txt
  -    sed -i '/tensorboardX/d' requirements.txt
     '';
   
     nativeBuildInputs = with python.pkgs; [
  
positive.code: 
    disabledTests = [
      # Requires network acccess to download models
      "test_synthesize"
      "test_run_all_models"
      # Mismatch between phonemes
      "test_text_to_ids_phonemes_with_eos_bos_and_blank"
      # Takes too long
      "test_parametrized_wavernn_dataset"
  
      # requires network
      "test_voice_conversion"
    ];
  
    disabledTestPaths = [
  
negative.code:       "numpy"
        "umap-learn"
        "unidic-lite"
      ];
    in ''
      sed -r -i \
  