anchor.diff:  # basic python modules
   #
   RUN easy_install distribute
  -RUN pip install cython
   # numpy goes first
   RUN pip install \
     numpy==1.9.1 
  
positive.code: RUN easy_install -U pip
  RUN pip install \
    rootpy==0.7.1 \
    root_numpy==3.3.1
  
  # XGboost
  #
  
negative.code:   && git checkout v5-34-21 \
    && ./configure --prefix=/usr/local \
    && make -j2 \
    && make install \e
    && cd .. \
    && rm -rf root
  
  