anchor.diff:  , docbook_xsl
   , docbook_xml_dtd_42
   , fetchurl
  +, libxslt
   , python2
  -, libxslt
  +, samba_full
   }:
   
  +let
  +  version = "2.1.7";
  +  newVersion = "2.1.7";
  +
  +  tarballUrls = version: [
  +    "mirror://samba/talloc/talloc-${version}.tar"
  +  ];
  +in
   stdenv.mkDerivation rec {
  -  name = "talloc-2.1.6";
  +  name = "talloc-${version}";
   
     src = fetchurl {
  -    url = "mirror://samba/talloc/${name}.tar.gz";
  -    sha256 = "0yyln462gn1vhwwg287bnpj9lxzg3jadj39fjjcrsdfbp981m3iv";
  +    urls = map (n: "${n}.gz") (tarballUrls version);
  +    allowHashOutput = false;
  +    sha256 = "19154e728e48d29c7398f470b0a59d093edc836156b41ffe20d247d6ec9fa006";
     };
   
     nativeBuildInputs = [
  
positive.code:     "--builtin-libraries=replace"
    ];
  
    meta = with stdenv.lib; {
      description = "Hierarchical pool based memory allocator with destructors";
      homepage = http://tdb.samba.org/;
  
negative.code:       wkennington
      ];
      platforms = with platforms;
        x86_64-linux;
    };
  }
  