anchor.diff:      };
     };
   
  -  meta = with stdenv.lib; {
  +  meta = with lib; {
       homepage = "http://www.isc.org/software/bind";
       description = "Domain name server";
       license = licenses.isc;
  
positive.code: { stdenv
  , fetchurl
  , libtool
  , dhcp
  , docbook-xsl-ns
  
negative.code: let
    toolsOnly = suffix == "tools";
  
    inherit (lib)
      optionals
      optionalString;
  
  