anchor.diff:  }:
   
   let
  -  version = "1.8.0";
  +  version = "1.8.1";
   in
   stdenv.mkDerivation rec {
  -  name = "intel-vaapi-driver-1.8.0";
  +  name = "intel-vaapi-driver-${version}";
   
     src = fetchurl rec {
       urls = [
  
positive.code:         + "libva-intel-driver/${name}.tar.bz2")
      ];
      hashOutput = false;
      sha256 = "4fcbb282957cf4f33b6c43a0f476d8df21f7721e586a8546c71242551986b3a6";
    };
  
    nativeBuildInputs = [
  
negative.code: 
    passthru = {
      srcVerification = fetchurl {
        failEarly = true;
        inherit (src)
          outputHash
          outputHashAlgo
  