There are lots of great languages. I think we can learn from each other. Perl has a lot of problems but also a lot of strengths. CPAN is one of its strengths.
Compare CPAN: https://metacpan.org/module/Moose::Manual
Then compare with other repositories from other languages: http://stackoverflow.com/questions/1693529/list-of-top-repos...
CPAN does
* Documentation
* Historical versions of libraries
* Search
* Source code
* Integrated bug tracker
* Integrated review system
* Links to repositories
* Integrated automated tests regularly run against hundreds of machines/operating systems/perl versions.