anchor.diff:  
     linux_2_6_38_ati = linux_2_6_38.override { extraConfig="DRM_RADEON_KMS y"; };
   
  -  # Please keep in sync with linux_2_6_39_powertop, except for extraConfig
     linux_2_6_39 = makeOverridable (import ../os-specific/linux/kernel/linux-2.6.39.nix) {
       inherit fetchurl stdenv perl mktemp module_init_tools ubootChooser;
       kernelPatches =
  
positive.code:         TIMER_STATS y
          USB_SUSPEND y
      '';
      kernelPatches =
        [ #kernelPatches.fbcondecor_2_6_38
          kernelPatches.sec_perm_2_6_24
          kernelPatches.aufs3_0
          #kernelPatches.aufs2_1_3_0
          #kernelPatches.mips_restart_2_6_36
        ];
    };
  
    linux_3_1 = makeOverridable (import ../os-specific/linux/kernel/linux-3.1.nix) {
  
negative.code:       ];
    };
  
    linux_3_0_powertop = linux_3_0.override {
      extraConfig = ''
          CPU_FREQ_GOV_ONDEMAND y
          CPU_FREQ_STAT y
  