anchor.diff:          luarocks                               \
           maven                                  \
           mingw-w64                              \
  -        mono-mcs mono-reference-assemblies-2.0 \
  +        mono-mcs mono-reference-assemblies-*   \
           nuget                                  \
           octave liboctave-dev                   \
           php-dev                                \
  
positive.code:         -C /usr/local/src/python36 \
          --strip 1 && \
      cd /usr/local/src/python36 && \
          ./configure --prefix=/opt/linux/python36 && \
          make && \
          make install && \
          /opt/linux/python36/bin/python3 -m pip install wheel && \
  
negative.code:         -C /usr/local/src/ruby26 \
          --strip 1 && \
      cd /usr/local/src/ruby26 && \
          ./configure \
              --prefix=/opt/linux/ruby26 \
              --enable-shared \
              LDFLAGS=-Wl,-rpath=/opt/linux/ruby26/lib && \
          make && \
          make install && \
      wget -P /usr/local/src/ruby27 \
          https://cache.ruby-lang.org/pub/ruby/2.7/ruby-2.7.2.tar.gz && \
      tar -xf /usr/local/src/ruby27/ruby-2.7.2.tar.gz \
          -C /usr/local/src/ruby27 \
          --strip 1 && \
      cd /usr/local/src/ruby27 && \
          ./configure \
              --prefix=/opt/linux/ruby27 \
              --enable-shared \
              LDFLAGS=-Wl,-rpath=/opt/linux/ruby27/lib && \
          make && \
          make install && \
      cd /usr/local/src && rm -rf ..?* .[!.]* *
  