anchor.diff:      keen4
       kernel
       klibc
  +    lvm2
       less
       libtool
       libxml2
       libxslt
       lynx
  +    man
       maven
  +    mdadm
       mk
       mktemp
       mod_python
  
positive.code:     bmp_plugin_wma
      bsdiff
      bzip2
      chatzilla
      cksfv
      coreutils
  
negative.code:     netcat
      nix
      nixUnstable
      ntp    
      nxml
      openssh
      openssl
  