anchor.diff:  # 	&& pip2 install -v -e . \
   # 	&& pip3 install -v -e .
    
  -# RUN rm -rf ipywidgets
  +# RUN rm -rf ipywidgets-4.1.1 && rm -f 4.1.1.tar.gz
   
   # Support for other languages
   # https://github.com/ipython/ipython/wiki/IPython-kernels-for-other-languages
  
positive.code: 	&& make -j"$(nproc --all)" install \
  	&& cd .. && rm -f v5.10.0.tar.gz && rm -rf node-5.10.0
  
  # R
  # CentOS packages for R that are not available for Redhat6, but are compatible
  RUN wget 'http://mirror.centos.org/centos/7/os/x86_64/Packages/lapack-devel-3.4.2-5.el7.x86_64.rpm' \
  
negative.code: # https://ipywidgets.readthedocs.org/en/latest/dev_install.html
  
  #RUN git clone https://github.com/ipython/ipywidgets
  #RUN wget https://github.com/ipython/ipywidgets/archive/4.1.1.tar.gz \
  #	&& tar xf 4.1.1.tar.gz
  
  #RUN cd ipywidgets-4.1.1 \
  #	&& pip2 install -v -e . \
  #	&& pip3 install -v -e . \
  #	&& cd jupyter-js-widgets \
  