anchor.diff:        gcc34
         gcc43
         gdb
  -      ghc
         ghostscript
         gimp
         git
  
positive.code:       autoconf
        automake110x
        automake19x
        ghc
        libtool
        libxml2
        libxslt
  
negative.code:       kvm
        less
        lftp
        libtool
        libxml2
        libxslt
  