anchor.diff:          extraConfig   = musnixRealtimeKernelExtraConfig;
         };
   
  -      linux_3_18_rt   = makeOverridable (import ../pkgs/os-specific/linux/kernel/linux-3.18-rt.nix) {
  +      linux_3_18_rt = makeOverridable (import ../pkgs/os-specific/linux/kernel/linux-3.18-rt.nix) {
           inherit fetchurl stdenv perl buildLinux;
           kernelPatches = [ kernelPatches.bridge_stp_helper
                             realtimePatches.realtimePatch_3_18
  
positive.code:         extraConfig   = musnixRealtimeKernelExtraConfig;
        };
  
        linux_4_4_rt    = makeOverridable (import ../pkgs/os-specific/linux/kernel/linux-4.4-rt.nix) {
          inherit fetchurl stdenv perl buildLinux;
          kernelPatches = [ kernelPatches.bridge_stp_helper
                            realtimePatches.realtimePatch_4_4
  
negative.code:         extraConfig   = musnixRealtimeKernelExtraConfig;
        };
  
        linux_4_1_rt = makeOverridable (import ../pkgs/os-specific/linux/kernel/linux-4.1-rt.nix) {
          inherit fetchurl stdenv perl buildLinux;
          kernelPatches = [ kernelPatches.bridge_stp_helper
                            realtimePatches.realtimePatch_4_1
  