anchor.diff:    passthru = {
       srcVerification = fetchurl rec {
         failEarly = true;
  -      urls = tarballUrls "2.2.11";
  -      sha256 = "496c3e123ef53f35436ddccca58e82acaa901ca4e21174e77386c0cea0c49cd9";
  +      urls = tarballUrls "2.2.12";
  +      sha256 = "db030f8b4c98640e91300d36d516f1f4f8fe09514a94ea9fc7411ee1a34082cb";
         fullOpts = {
           pgpsigUrl = map (n: "${n}.sig") urls;
           pgpKeyFingerprints = [
  
positive.code:   src = fetchurl {
      urls = tarballUrls version;
      hashOutput = false;
      sha256 = "496c3e123ef53f35436ddccca58e82acaa901ca4e21174e77386c0cea0c49cd9";
    };
  
    nativeBuildInputs = [
  
negative.code:     "mirror://gnupg/gnupg/gnupg-${version}.tar.bz2"
    ];
  
    version = "2.2.12";
  in
  stdenv.mkDerivation rec {
    name = "gnupg-${version}";
  