anchor.diff:  
   # Install qrouter
   RUN cd /root && \
  -    apt install -y tk-dev && \
       git clone --depth 1 git://opencircuitdesign.com/qrouter-1.3 && \
       cd qrouter-1.3 && \
       ./configure && \
  
positive.code: 
  # Install QFlow
  RUN cd /root && \
      apt install -y tcsh && \
      git clone --depth 1 git://opencircuitdesign.com/qflow-1.1 && \
      cd qflow-1.1 && \
      ./configure && \
  
negative.code: 
  # Install graywolf
  RUN cd /root && \
      git clone --depth 1 https://github.com/rubund/graywolf && \
      cd graywolf && \
      cmake . && \
  