anchor.diff:      /src/legacypipe/py/{legacypipe,legacyzpts}
   
   # update legacypipe
  -RUN cd /src/legacypipe && git pull && git checkout calib-container && git describe && \
  +RUN cd /src/legacypipe && git pull && git checkout preburn-lslga && git describe && \
     python    -m compileall /src/legacypipe/py/{legacypipe,legacyzpts} && \
     python -O -m compileall /src/legacypipe/py/{legacypipe,legacyzpts}
  
positive.code:     && python3 setup-cython.py --with-ceres install --home /usr/local \
      && make version && cp tractor/version.py /usr/local/lib/python/tractor/ \
      && rm -R $(find . -name "*.o" -o -name "*.so") \
      && (cd && PYTHONPATH=/usr/local/lib/python python3 -c "import tractor; print(tractor.__version__)")
  #    && make ceres && make install-ceres INSTALL_DIR=/usr/local \
  
  RUN pip --no-cache-dir install fitsio==0.9.12
  
  ######## Stage 2 ########
  FROM registry.services.nersc.gov/nersc/intel_cxx_fort_mpi_mkl_runtime
  
negative.code:     conda install python=3.7 pip numpy scipy && \
      conda clean -a -y
  
  # Pip installs -- binary
  RUN for x in \
      setuptools \
  