Mojolicious has nearly no dependencies declared, i.e. perl 5.10.1 and ExtUtils::MakeMaker 0, but has many on core modules. Also Mojo has many (undeclared) suggests or recommends dependencies, which are required in an string eval.

A few weeks ago I got in the dependency hell with Mojolicious: Something working for a long time (using the dump helper in a template) threw an error. Seems that another installation of a CPAN module required an explicit minimal version of Data::Dumper. But at the time of installation Data::Dumper was broken. This took me some hours to try, diagnose, and update. Yes, if someone is paranoic against such (extremely seldom) situations, then it is a good approach. But in most cases such approaches waste resources.