How do I recursively grep through compressed archives?

I'm trying to find out what modules [use Test::Version](http://search.cpan.org/dist/Test-Version/lib/Version.pm) in cpan. So I've used [minicpan](http://search.cpan.org/dist/CPAN-Mini/bin/minicpan) to mirror it. My problem is that I need to iterate through the archives that are downloaded, and grep the files that are in the archives. Can anyone tell me how I might do this? preferably in a way that tells me which file in the archive and what line it's on. *(note: they aren't all tarballs some are zip files)*