anchor.diff:      bmp_plugin_wma
       bsdiff
       bzip2
  +    cdrtools
       chatzilla
       cksfv
       coreutils
  
positive.code:     keen4
      kernel
      klibc
      less
      libtool
      libxml2
      libxslt
      lynx
      maven
      mk
      mktemp
      mod_python
  
negative.code:     netcat
      nix
      nixUnstable
      ntp    
      nxml
      openssh
      openssl
  