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When you install a module from the CPAN, and this module requires other modules, the cpan shell will ask you if you want to install them. When you are installing Catalyst, it may take a while, and you may not want to spend your afternoon in front of the prompt answering "yes" every 5 seconds.

The solution is to set the environment variable PERL_MM_USE_DEFAULT. Next time you want to install a big app: PERL_MM_USE_DEFAULT=1 cpan Catalyst KiokuDB and your done.