perl_xml_sax.tcz
   perl_xml_sax_expat.tcz
      perl_xml_namespacesupport.tcz
         perl5.tcz
            bzip2-lib.tcz
      perl_xml_sax_base.tcz
         perl5.tcz
            bzip2-lib.tcz
      perl_xml_parser.tcz
         perl5.tcz
            bzip2-lib.tcz
         expat2.tcz
   perl_xml_namespacesupport.tcz
      perl5.tcz
         bzip2-lib.tcz