anchor.diff:  , configFile ? "all"
   
   # Userspace dependencies
  -, zlib, libuuid, python, attr
  +, zlib, libuuid, python, attr, openssl
   
   # Kernel dependencies
   , kernel ? null, spl ? null, splUnstable ? null
  
positive.code:       nativeBuildInputs = [ autoreconfHook nukeReferences ];
        buildInputs =
             optionals buildKernel [ spl ]
          ++ optionals buildUser [ zlib libuuid python attr ];
  
        # for zdb to get the rpath to libgcc_s, needed for pthread_cancel to work
        NIX_CFLAGS_LINK = "-lgcc_s";
  
negative.code:     incompatibleKernelVersion = null;
  
      # this package should point to a version / git revision compatible with the latest kernel release
      version = "2017-10-16";
  
      rev = "7670f721fc82e6cdcdd31f83760a79b6f2f2b998";
      sha256 = "0ask9d9936s7mhs9q5wzvn6c8fd322i76hs2n7fajfk17b1a1lkj";
      isUnstable = true;
  
      extraPatches = [
  