anchor.diff:          python \
           python-pip \
    && pacman -Scc --noconfirm \
  + && pip install gcovr \
    && useradd \
         --system \
         --no-create-home \
         --shell /usr/bin/bash \
         builder \
  - && mkdir /tmp/gcovr -p \
  - && tar -C /tmp/gcovr -xzf /tmp/gcovr.tar.gz --strip-components 1 \
  - && pip install /tmp/gcovr \
  - && rm -rf /tmp/gcovr* \
    && chown -R builder /tmp/benchmark \
    && cd /tmp/benchmark \
    && su builder -c 'makepkg --nocheck' \
  
positive.code: 
  ADD https://aur.archlinux.org/cgit/aur.git/plain/PKGBUILD?h=benchmark /tmp/benchmark/PKGBUILD
  ADD https://aur.archlinux.org/cgit/aur.git/plain/PKGBUILD?h=libc%2b%2b /tmp/libc++/PKGBUILD
  ADD https://github.com/gcovr/gcovr/archive/master.tar.gz /tmp/gcovr.tar.gz
  
  RUN pacman -Syy --noconfirm \
   && pacman -S --noconfirm \
  
negative.code:       libunwind \
        make \
        ninja \
   && userdel builder
  
  WORKDIR /
  