anchor.diff:  
   RUN apt-get update && apt-get install -y --no-install-recommends apt apt-transport-https curl wget apt-utils
   
  -# csharp
  +# csharp (mono)
   RUN echo "deb http://download.mono-project.com/repo/debian xenial main" | tee /etc/apt/sources.list.d/mono.list && \
       apt-key adv --keyserver keyserver.ubuntu.com --recv-keys A6A19B38D3D831EF
   
  
positive.code: 
  RUN apt-get install -y --no-install-recommends \
  `# golang (go) dependencies` \
        golang-go
  
  RUN apt-get install -y --no-install-recommends \
  `# Haskell dependencies` \
  
negative.code:       qtbase5-dev-tools
  
  RUN apt-get install -y --no-install-recommends \
  `# csharp (mono) dependencies` \
        mono-devel
  
  RUN apt-get install -y --no-install-recommends \
  