Surely the code should be traversing @INC. Heck, you could even have custom directories added via use lib or $ENV{PERL5LIB} that you want to be visible.
...
So, I'm looking at hand-rolling something that does the business. Unless there's another candidate module out there that I'm unaware of (please tell me).
There are several different existing approaches ..

In reply to Re: ExtUtils::Installed doesn't list all modules by davidrw
in thread ExtUtils::Installed doesn't list all modules by rinceWind

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