anchor.diff:  , tevent
   }:
   
  +let
  +  name = "ldb-1.1.29";
  +
  +  tarballUrls = [
  +    "mirror://samba/ldb/${name}.tar"
  +  ];
  +in
   stdenv.mkDerivation rec {
  -  name = "ldb-1.1.27";
  +  inherit name;
   
     src = fetchurl {
  -    url = "mirror://samba/ldb/${name}.tar.gz";
  -    sha256 = "cdb8269cba09006ddf3766eb7721192b52ae3fdc8a6b95f4318b6b740b9d35ac";
  +    urls = map (n: "${n}.gz") tarballUrls;
  +    hashOutput = false;
  +    sha256 = "59d84f9a5b799f519ba7b2685bb46f5a26f1bbf05b7a144b2f5e017d01d80f97";
     };
   
     nativeBuildInputs = [
  
positive.code: , fetchurl
  , libxslt
  , python
  
  , popt
  , talloc
  
negative.code:     "--builtin-libraries=replace"
    ];
  
    passthru = {
      srcVerification = fetchurl {
        failEarly = true;
        pgpsigUrls = map (n: "${n}.asc") tarballUrls;
        pgpDecompress = true;
        inherit (samba_full.pgp.library) pgpKeyFingerprint;
        inherit (src) urls outputHash outputHashAlgo;
      };
    };
  
    meta = with stdenv.lib; {
      description = "An LDAP-like embedded database";
      homepage = http://ldb.samba.org/;
  