anchor.diff:        rsync
         ruby
         screen
  -      sdf
         slim
         spidermonkey
         ssmtp
         strace
  -      strategoxt
  -      strategoxtUtils
         su
         subversion
         sudo
         swig
         sylpheed 
         sysklogd
  -      syslinux
         sysvinit
         sysvtools
         tetex
  
positive.code:       gnutar
        gqview
        graphviz
        grub
        gzip
        hal
        hello
        iana_etc
        iputils
        irssi
        jakartaregexp
        jdkPlugin
        jetty
        jikes
        jing_tools
        jrePlugin
        jwhois
        kbd
        kcachegrind
        kdebase
        keen4
        ktorrent
        kvm
        less
  
negative.code: 
    allPackages = import ./all-packages.nix;
  
    # Packages that we want to build on i686-linux and x86_64-linux.
    commonLinuxPkgs = system: let pkgs = allPackages {inherit system;}; in {
      inherit (pkgs)
        MPlayer
        MPlayerPlugin
        alsaUtils
        apacheHttpd
        aspell
        aspellDicts
        audacious
        audacious_plugins
        autoconf
        automake19x
        bash
        bashInteractive
        binutils
        bison23
        bittorrent
  