xmltv_prereq is a package of several perl modules required to build and
run xmltv.  The package includes the following:

 Class-MethodMaker-2.09 HTML-Tagset-3.10 TermReadKey-2.30 Tk-804.027
 DateManip-5.44 XML-NamespaceSupport-1.09 libwww-perl-5.805 
 HTML-TableExtract-2.1 HTML-Tree-3.23 Lingua-EN-Numbers-Ordinate-1.02
 Lingua-Preferred-0.2.4 PerlIO-gzip-0.18 SOAP-Lite-0.69
 Term-ProgressBar-2.09 Tk-TableMatrix-1.23 Unicode-String-2.09
 XML-LibXML-1.62 XML-Twig-3.29 XML-Writer-0.602 WWW-Mechanize-1.20
 XML-LibXML-Common-0.13 HTML-Parser-3.56 xmltv_prereq1: XML-SAX-0.15

Requires Compress-Zlib availible at SlackBuilds.org