Maybe you also could look at http://www.cpan.org/misc/cpan-faq.html#How_installed_modules
that has some other explanations about finding out the installed modules and their versions.
There is also some code to be used and a brief explanation about ExtUtils::Installed module.
Hope it help.

In reply to Re: Installed modules and their versions by r34d0nl1
in thread Installed modules and their versions by cog

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