The cpan search page for the WWW-Mechanize distro has a link to a page that lists all the dependencies of that module, recursively. This fails for a few modules, and it also gives the dependencies for the latest versions only, not for the particular version you mentioned, but that usually shouldn't be a too large problem. Note that you can choose a perl core version on that webpage and then it will automatically mark those dependencies that are already in the perl core.