anchor.diff:    ];
   
     major = "3.6";
  -  minor = "4";
  +  minor = "5";
     version = "${major}.${minor}";
   in
   stdenv.mkDerivation rec {
  
positive.code:     # Gnupg depends on this so we have to decouple this fetch from the rest of the build.
      srcVerification = fetchurl rec {
        failEarly = true;
        urls = tarballUrls "3.6" "4";
        inherit (src)
          outputHashAlgo;
        fullOpts = {
          pgpsigUrls = map (n: "${n}.sig") urls;
          pgpKeyFingerprint = "1F42 4189 05D8 206A A754  CCDC 29EE 58B9 9686 5171";
        };
        outputHash = "c663a792fbc84349c27c36059181f2ca86c9442e75ee8b0ad72f5f9b35deab3a";
      };
    };
  
  
negative.code:   src = fetchurl {
      urls = tarballUrls major minor;
      hashOutput = false;
      sha256 = "073eced3acef49a3883e69ffd5f0f0b5f46e2760ad86eddc6c0866df4e7abb35";
    };
  
    configureFlags = [
  