anchor.diff:      jsonschema functools32 \
       ipythonblocks numpy pandas matplotlib gitpython && \
     pip install scipy netCDF4 && \
  -  rm -rf /home/researcher/.cache
  -
  -# Install pytables
  -RUN /opt/python/bin/pip install numexpr cython && \
  -  /opt/python/bin/pip install git+git://github.com/pytables/pytables@develop && \
  +  pip install numexpr cython && \
  +  pip install git+git://github.com/pytables/pytables@develop && \
  +  ccache --show-stats && \
  +  ccache --clear && \
     rm -rf /home/researcher/.cache
   
   # Install NLTK, textblob & pyStatParser
  
positive.code: RUN virtualenv /opt/python && \
    mkdir -p /opt/ipython
  
  # Install from PIP
  # - Updates for setuptools, pip & wheels
  # - Notebook dependencies
  # - IPython (with notebook)
  
negative.code: # - Useful IPython libraries
  # - SciPy & netCDF4 (which expect numpy to be installed first)
  RUN source /opt/python/bin/activate && \
    PATH=/usr/lib64/ccache:$PATH && \
    pip install --upgrade setuptools pip wheel && \
    pip install \
      tornado pyzmq jinja2 \
  