anchor.diff:    passthru = {
       srcVerification = fetchurl {
         failEarly = true;
  -      pgpsigUrls = map (n: "${n}.sign") tarballUrls;
  -      pgpDecompress = true;
  -      pgpKeyFingerprint = "5558 F939 9CD7 8368 5055  3C6E C28E 7847 ED70 F82D";
  -      inherit (src) urls outputHash outputHashAlgo;
  +      inherit (src)
  +        urls
  +        outputHash
  +        outputHashAlgo;
  +      fullOpts = {
  +        pgpsigUrls = map (n: "${n}.sign") tarballUrls;
  +        pgpDecompress = true;
  +        pgpKeyFingerprint = "5558 F939 9CD7 8368 5055  3C6E C28E 7847 ED70 F82D";
  +      };
       };
     };
   
  
positive.code:   src = fetchurl {
      urls = map (n: "${n}.xz") tarballUrls;
      hashOutput = false;
      sha256 = "fcc0431cc951c3563f1e4f946d27c8e2161cfd81f25316e6bd783fa6118469e0";
    };
  
    nativeBuildInputs = [
  
negative.code:   '';
  
    makeFlags = [
      "ZLIB=yes"
      "DNS=yes"
      "SHARED=yes"
      "LIBKMOD=yes"
      "HWDB=yes"
    ];
  