anchor.diff:    src = fetchurl {
       urls = tarballUrls version;
       hashOutput = false;
  -    sha256 = "626aafee84af9d2ce253d2c143dc1c0902dda045780cc241f39970fc60be05bc";
  +    sha256 = "b9b85eba0793ea3e6e66b896eb031fa05e1a4517277cc9ab10816b359254cd9a";
     };
   
     buildInputs = [
  
positive.code:         # NIIBE Yutaka
          "031E C253 6E58 0D8E A286  A9F2 2071 B08A 33BD 3F06"
        ];
        outputHash = "626aafee84af9d2ce253d2c143dc1c0902dda045780cc241f39970fc60be05bc";
        inherit (src) outputHashAlgo;
      };
    };
  
negative.code:     "mirror://gnupg/libgcrypt/libgcrypt-${version}.tar.bz2"
    ];
  
    version = "1.7.7";
  in
  stdenv.mkDerivation rec {
    name = "libgcrypt-${version}";
  