anchor.diff:    passthru = {
       srcVerification = fetchurl rec {
         failEarly = true;
  -      urls = tarballUrls "1.7.8";
  +      urls = tarballUrls "1.8.0";
         pgpsigUrls = map (n: "${n}.sig") urls;
         pgpKeyFingerprints = [
           # Werner Koch
  
positive.code:         # NIIBE Yutaka
          "031E C253 6E58 0D8E A286  A9F2 2071 B08A 33BD 3F06"
        ];
        outputHash = "948276ea47e6ba0244f36a17b51dcdd52cfd1e664b0a1ac3bc82134fb6cec199";
        inherit (src) outputHashAlgo;
      };
    };
  
negative.code:     "mirror://gnupg/libgcrypt/libgcrypt-${version}.tar.bz2"
    ];
  
    version = "1.8.0";
  in
  stdenv.mkDerivation rec {
    name = "libgcrypt-${version}";
  