anchor.diff:    passthru = {
       srcVerification = fetchurl {
         failEarly = true;
  -      md5Confirm = "49f534f1079d3c5bc178a150c1c105aa";
  -      inherit (src) urls outputHash outputHashAlgo;
  +      inherit (src)
  +        urls
  +        outputHash
  +        outputHashAlgo;
  +      fullOpts = {
  +        md5Confirm = "b12f8680d87c81a302e8c85712ed1a80";
  +      };
       };
       inherit initrdPath;
     };
  
positive.code: 
    src = fetchurl {
      url = "https://downloadmirror.intel.com/${id}/eng/microcode-${version'}.tgz";
      multihash = "QmQFmb1DQWCTE8oKBYLuksxFvugv8o5LzYZ6T9LLThF1oh";
      hashOutput = false;
      sha256 = "29f9e8dc27e6c9b6488cecd7fe2394030307799e511db2d197d9e6553a7f9e40";
    };
  
    nativeBuildInputs = [
  
negative.code: }:
  
  let
    version = "2018-08-07a";
    version' = stdenv.lib.replaceStrings ["-"] [""] version;
    id = "28087";
  
    initrdPath = "share/intel-microcode/intel-microcode-initrd.img";
  in
  