anchor.diff:      ncurses
       numactl
       openssl
  +    pam
       pcre
       snappy
       systemd_lib
  
positive.code: , boost
  , judy
  , bison
  , libxml2
  , kytea
  , msgpack-c
  
negative.code:     judy
      kytea
      libaio
      libarchive
      libevent
      libxml2
      lz4
  