anchor.diff:    passthru = {
       srcVerified = fetchurl rec {
         failEarly = true;
  -      urls = tarballUrls "1.21";
  +      urls = tarballUrls "1.22";
         pgpsigUrls = map (n: "${n}.sig") urls;
         inherit (gnupg.srcVerified) pgpKeyFingerprints;
  -      outputHash = "b7dbdb3cad63a740e9f0c632a1da32d4afdb694ec86c8625c98ea0691713b84d";
  +      outputHash = "f2a04ee6317bdb41a625bea23fdc7f0b5a63fb677f02447c647ed61fb9e69d7b";
         inherit (src) outputHashAlgo;
       };
     };
  
positive.code:   src = fetchurl {
      urls = tarballUrls version;
      allowHashOutput = false;
      sha256 = "b7dbdb3cad63a740e9f0c632a1da32d4afdb694ec86c8625c98ea0691713b84d";
    };
  
    postPatch = ''
  
negative.code:     "mirror://gnupg/libgpg-error/libgpg-error-${version}.tar.bz2"
    ];
  
    version = "1.22";
  in
  stdenv.mkDerivation rec {
    name = "libgpg-error-${version}";
  