anchor.diff:        nano = allBut cygwin;
         ncat = linux;
         netcat = all;
  -      nfsUtils = linux;
  -      nmap = linux;
         nss_ldap = linux;
         nssmdns = linux;
  -      ntfs3g = linux;
  -      ntp = linux;
         ocaml = linux;
  -      octave = linux;
  -      openssl = all;
         pam_console = linux;
         pam_login = linux;
         pan = gtkSupported;
         par2cmdline = all;
  -      pavucontrol = linux;
         pciutils = linux;
         pdf2xml = all;
         perl = all;
         php = linux;
  -      pidgin = linux;
         pinentry = linux;
         pltScheme = linux;
         pmccabe = linux;
         portmap = linux;
         postgresql = all;
  -      postfix = linux;
         ppl = all;
         procps = linux;
         pthreadmanpages = linux;
         pygtk = linux;
  -      pyqt4 = linux;
         python = allBut cygwin;
         pythonFull = linux;
         sbcl = linux;
         qt3 = linux;
         quake3demo = linux;
  -      readline = all;
         reiserfsprogs = linux;
         rlwrap = all;
         rogue = all;
         rpm = linux;
         rsync = linux;
         rubber = allBut cygwin;
  -      ruby = all;
         rxvt_unicode = linux;
         screen = linux ++ darwin;
         scrot = linux;
         sdparm = linux;
         seccure = linux;
         sgtpuzzles = linux;
  -      sharutils = all;
  -      slim = linux;
         sloccount = allBut cygwin;
  -      smartmontools = linux;
         spidermonkey = linux;
  -      sqlite = allBut cygwin;
         squid = linux;
         ssmtp = linux;
         stdenv = prio 175 all;
         stlport = linux;
  -      strace = linux;
         su = linux;
         sudo = linux;
         superTuxKart = linux;
         swig = linux;
  -      sylpheed = linux;
         sysklogd = linux;
         syslinux = ["i686-linux"];
         sysvinit = linux;
  
positive.code:       gcc34 = linux;
        gcc44 = linux;
        gcj = linux;
        ghdl = linux;
        ghostscript = linux;
        ghostscriptX = linux;
        gimp_2_8 = linux;
        git = linux;
        gitFull = linux;
        glibc = linux;
        glibcLocales = linux;
        glxinfo = linux;
        gnash = linux;
        gnat = linux;
        gnugrep = all;
        gnum4 = all;
        gnumake = all;
        gnupatch = all;
        gnupg = linux;
        gnuplot = allBut cygwin;
        gnused = all;
        gnutar = all;
        gnutls = linux;
        gogoclient = linux;
        gphoto2 = linux;
        gpm = linux;
        gprolog = linux;
        gpscorrelate = linux;
        gpsd = linux;
        gqview = gtkSupported;
        graphviz = all;
        grub = linux;
        grub2 = linux;
        gsl = linux;
        guile = linux;  # tests fail on Cygwin
        gv = linux;
        gzip = all;
        hddtemp = linux;
        hello = all;
        host = linux;
        htmlTidy = all;
        hugin = linux;
        iana_etc = linux;
        icewm = linux;
        idutils = all;
        ifplugd = linux;
        impressive = linux;
        inetutils = linux;
        inkscape = linux;
        iputils = linux;
        irssi = linux;
        jfsutils = linux;
        jfsrec = linux;
  
negative.code:       kbd = linux;
        keen4 = ["i686-linux"];
      #  klibc = linux;
        less = all;
        lftp = all;
        libarchive = linux;
        libtool = all;
        libtool_2 = all;
        lout = linux;
        lsof = linux;
        ltrace = linux;
        lynx = linux;
        lzma = linux;
        man = linux;
  