anchor.diff:      jieba
       librosa
       matplotlib
  +    mecab-python3
       numba
       pandas
       pypinyin
  
positive.code:   ];
  
    propagatedBuildInputs = with python3Packages; [
      coqpit
      flask
      gdown
  
negative.code:     scipy
      soundfile
      tensorboardx
      tensorflow
      tqdm
      umap-learn
      unidic-lite
    ];
  
    postInstall = ''
  