anchor.diff:    src = fetchurl {
       urls = tarballUrls version;
       hashOutput = false;
  -    sha256 = "6cbe8d454bf5dc204621eed3016d721b66298fa95363395bb8eeceb1d2fd14cb";
  +    sha256 = "afa262868e39b651a2db4c071fba90415154243e83a830ca00516f9a807fd514";
     };
   
     nativeBuildInputs = [
  
positive.code:     "mirror://gnupg/gnupg/gnupg-${version}.tar.bz2"
    ];
  
    version = "2.2.16";
  in
  stdenv.mkDerivation rec {
    name = "gnupg-${version}";
  
negative.code:   passthru = {
      srcVerification = fetchurl rec {
        failEarly = true;
        urls = tarballUrls "2.2.17";
        sha256 = "afa262868e39b651a2db4c071fba90415154243e83a830ca00516f9a807fd514";
        fullOpts = {
          pgpsigUrl = map (n: "${n}.sig") urls;
          pgpKeyFingerprints = [
  