anchor.diff:      lua5.3 \
       make \
       maven \
  +    mono-complete \
  +    mono-dmcs \
  +    mono-gmcs \
       nodejs \
       ocaml-nox \
       openjdk-8-jdk \
  
positive.code:     "clisp --version | head -n 1" \
      "coffee -v | head -n 1" \
      "dmd --version | head -n 1" \
      "gcc --version | head -n 1" \
      "gdc --version | head -n 1" \
      "g++ --version | head -n 1" \
  
negative.code:     "lua -v | head -n 1" \
      "make -v | head -n 1" \
      "mvn -v | head -n 1" \
      "mono -V | head -n 1" \
      "node -v | head -n 1" \
      "java -version | head -n 1" \
      "javac -version | head -n 1" \
  