anchor.diff:      && make -j "$(nproc)" \
       && ctest --output-on-failure \
       && make install \
  -    && cd .. \
  -    && rm -rf build \
       && cd \
       && rm -rf OpenCoarrays* opencoarrays* \
       && caf --version \
  
positive.code:     libmpc-dev \
      libtool \
      $transientBuildDeps \
      && cmake --version \
      && wget https://github.com/sourceryinstitute/opencoarrays/releases/download/${OPENCOARRAYS_VERSION}/OpenCoarrays-${OPENCOARRAYS_VERSION}.tar.gz \
      && wget https://github.com/sourceryinstitute/opencoarrays/releases/download/${OPENCOARRAYS_VERSION}/opencoarrays-${OPENCOARRAYS_VERSION}-SHA256.txt \
      && sha256sum -c opencoarrays-${OPENCOARRAYS_VERSION}-SHA256.txt \
  
negative.code: 
  ARG OPENCOARRAYS_VERSION=1.9.0
  
  RUN DEBIAN_FRONTEND=noninteractive transientBuildDeps="apt-utils bison dpkg-dev flex gcc gfortran g++ libfile-pushd-perl" \
      && set -v \
      && echo "$DEBIAN_FRONTEND" \
      && echo "deb http://httpredir.debian.org/debian jessie-backports main" >> /etc/apt/sources.list \
  