anchor.diff:      pip install qtconsole && \
       pip install six && \
       pip install terminado && \
  -    # Latest version (6.0) of tornado breaks Jupyter notebook:
  -    # https://github.com/jupyter/notebook/issues/4439
  -    pip install tornado==5.0.2 && \
  +    pip install tornado && \
       pip install tqdm && \
       pip install traitlets && \
       pip install wcwidth && \
  
positive.code:     pip install mistune && \
      pip install nbconvert && \
      pip install nbformat && \
      pip install notebook==5.5.0 && \
      pip install olefile && \
      pip install kornia && \
      pip install pandas_summary && \
  
negative.code:     pip install nnabla && \
      pip install vowpalwabbit && \
      # papermill can replace nbconvert for executing notebooks
      pip install cloud-tpu-client && \
      pip install tensorflow-cloud && \
      pip install tensorflow-datasets && \
  