anchor.diff:  # build MOAB
   RUN mkdir moab \
       && cd moab \
  -    && git clone --branch Version5.1.0 --single-branch https://bitbucket.org/fathomteam/moab moab \
  +    && git clone --branch 5.3.0 --single-branch https://bitbucket.org/fathomteam/moab moab \
       && mkdir build \
       && cd build \
       && cmake ../moab/ \
  
positive.code:                        scipy \
                         cython \
                         nose \
                         "tables<3.7" \
                         matplotlib \
                         jinja2 \
                         setuptools \
  
negative.code:                        liblapack-dev \
                         libeigen3-dev \
                         libhdf5-dev \
                         hdf5-tools \
                         g++-8
  
  # need to put libhdf5.so on LD_LIBRARY_PATH
  ENV LD_LIBRARY_PATH /usr/lib/x86_64-linux-gnu
  
  # switch to python 3 and to gcc8
  RUN update-alternatives --install /usr/bin/python python /usr/bin/python3 10; \
      update-alternatives --install /usr/bin/pip pip /usr/bin/pip3 10; \
      update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 7; \
      update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-7 7; \
      update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 8; \
      update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-8 8;
  
  # upgrade pip and install python dependencies
  ENV PATH $HOME/.local/bin:$PATH
  