perl_xml_simple.tcz
   perl_xml_sax.tcz
      perl_xml_sax_expat.tcz
         perl_xml_namespacesupport.tcz
            perl5.tcz
         perl_xml_sax_base.tcz
            perl5.tcz
         perl_xml_parser.tcz
            perl5.tcz
            expat2.tcz