anchor.diff:      sed -i $out/bin/lkl-hijack.sh \
           -e "s,LD_LIBRARY_PATH=.*,LD_LIBRARY_PATH=$lib/lib,"
   
  -    cp tools/lkl/{cptofs,cpfromfs,fs2tar,lklfuse} $out/bin
  +    cp tools/lkl/{cptofs,fs2tar,lklfuse} $out/bin
  +    ln -s cptofs $out/bin/cpfromfs
       cp -r tools/lkl/include $dev/
       cp tools/lkl/liblkl*.{a,so} $lib/lib
     '';
  
positive.code: { stdenv, fetchFromGitHub, bc, python, fuse, libarchive }:
  
  stdenv.mkDerivation rec {
    name = "lkl-2017-11-10";
    rev  = "52a6a643c7d1dd3031c0cbec75e1ac7a999f3d57";
  
    outputs = [ "dev" "lib" "out" ];
  
  
negative.code:     inherit rev;
      owner  = "lkl";
      repo   = "linux";
      sha256 = "1m6gh4zcx1q7rv05d0knjpk3ivk2b3kc0kwjndciadqc45kws4wh";
    };
  
    # Fix a /usr/bin/env reference in here that breaks sandboxed builds
  