anchor.diff:      };
       zfsUnstable = common {
         # comment/uncomment if breaking kernel versions are known
  -      inkompatibleKernelVersion = null;
  +      incompatibleKernelVersion = null;
   
         version = "0.7.0-rc3";
   
  
positive.code:     # to be adapted
      zfsStable = common {
        # comment/uncomment if breaking kernel versions are known
        inkompatibleKernelVersion = "4.9";
  
        version = "0.6.5.8";
  
  
negative.code:   buildKernel = any (n: n == configFile) [ "kernel" "all" ];
    buildUser = any (n: n == configFile) [ "user" "all" ];
  
    common = { version, sha256, extraPatches, spl, incompatibleKernelVersion ? null } @ args:
      if buildKernel &&
         (incompatibleKernelVersion != null) &&
         versionAtLeast kernel.version incompatibleKernelVersion then
        throw "Linux v${kernel.version} is not yet supported by zfsonlinux v${version}. Try zfsUnstable or set the NixOS option boot.zfs.enableUnstable."
      else stdenv.mkDerivation rec {
        name = "zfs-${configFile}-${version}${optionalString buildKernel "-${kernel.version}"}";
  
  