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Loading the latest version of modulesby Anonymous Monk
|on Jul 06, 2011 at 02:27 UTC||Need Help??|
Anonymous Monk has asked for the
wisdom of the Perl Monks concerning the following question:
Regarding my previous question about appending directories to @INC instead of prepending to it, I guess what I really want is for Perl to load the latest version of modules.
For deployment convenience, I ship CPAN modules with my application so that a minimum Perl installation can quickly run the application. In my application scripts I add "use lib '/path/to/bundled/cpan'". However, some of the included CPAN modules might get a bit out of date (I try to update the bundled CPAN as often as possible, but still...) and the system's CPAN module version might be newer.
What I would like is for Perl to keep searching entries in @INC and compare the versions of all modules found, and then use the latest one.
I know that doing this might open a whole can of worms (for example, the recent LWP 6.00 incompatibilities), but in general it has worked quite well so far in my case.
And I also would like to exclude this behaviour for some modules, since I also have a couple of patched CPAN modules that I want to use regardless of new version from CPAN.
Any ready-made solution I can use? Module::Load::* seems to be able to be slightly modified to do what I need, but I don't want to change all the "use" statements in my scripts/libraries. What would be ideal is probably custom hook in @INC.
Some imagined syntax: