anchor.diff:    firefox3 = linux;
     gcc = all;
     gdb = all;
  -  ghostscript = all;
  -  ghostscriptX = all;
  +  ghostscript = linux;
  +  ghostscriptX = linux;
     git = linux;
  -  gnuplot = all;
  +  gnuplot = allBut "i686-cygwin";
     gnuplotX = linux;
  -  gnutls = all;
  +  gnutls = linux;
     graphviz = all;
     guile = linux;  # tests fail on Cygwin
     guileLib = linux;
     hello = all;
     icecat3Xul = [ "i686-linux" ];
     idutils = all;
  -  imagemagick = all;
  +  imagemagick = allBut "i686-cygwin";
     inetutils = linux;
     inkscape = linux;
     jnettop = linux;
  
positive.code:   autoconf = all;
    avahi = allBut "i686-cygwin";  # Cygwin builds fail
    bash = all;
    bazaar = all;
    bitlbee = linux;
    boost = all;
    cdrkit = linux;
    cedet = all;
    emacs22 = all;
    emacsUnicode = all;
    emms = linux;
  
negative.code:   };
  
    kernelPackages_2_6_27 = {
      # aufs = linux; # kernel seems to be too old for that package 
      kernel = linux;
    };
    
  