anchor.diff:        qtbase5-dev-tools
   
   RUN apt-get install -y --no-install-recommends \
  -`# csharp dependencies` \
  +`# csharp (mono) dependencies` \
         mono-devel
   
   RUN apt-get install -y --no-install-recommends \
  
positive.code: 
  RUN apt-get update && apt-get install -y --no-install-recommends apt apt-transport-https curl wget apt-utils
  
  # csharp
  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
  
  
negative.code: # install general dependencies
  RUN apt-get install -y --no-install-recommends \
  `# General dependencies` \
        bash-completion \
        bison \
        build-essential \
        clang \
  