No wonder I haven't done any upgrading of perl on my production servers. :P

At the same time, it is really annoying to try CPAN installs, as most of the time the CPAN modules wants to download and install the newest perl. And I'm always worried that it will miss compiling something in that I need that I didn't know was *not* a default item.

How do most people deal with this? Isn't there a way for the perl install to examine its own configuration before upgrading?