anchor.diff:  
   # llvm needs CMake 2.8.12.2 or higher
   # https://cmake.org/download/
  -ENV CMAKE_VER_MAJ 3.6
  -ENV CMAKE_VER_MIN .2
  +ENV CMAKE_VER_MAJ 3.7
  +ENV CMAKE_VER_MIN .0
   ENV CMAKE_VER $CMAKE_VER_MAJ$CMAKE_VER_MIN
   
   RUN wget https://cmake.org/files/v$CMAKE_VER_MAJ/cmake-$CMAKE_VER.tar.gz \
  
positive.code: 
  # GIT
  # http://tecadmin.net/install-git-2-0-on-centos-rhel-fedora/#
  ENV GIT_VER 2.10.0
  
  RUN wget https://www.kernel.org/pub/software/scm/git/git-$GIT_VER.tar.gz \
  	&& tar xf git-$GIT_VER.tar.gz && cd git-$GIT_VER \
  
negative.code: 	&& cd .. && rm -rf llvm_build && rm -rf llvm
  
  # node
  ENV NODE_VER 6.7.0
  
  RUN wget https://github.com/nodejs/node/archive/v$NODE_VER.tar.gz \
  	&& tar xf v$NODE_VER.tar.gz && cd node-$NODE_VER \
  