It just took ages to install and test some huge and popular modules like Catalyst, Moose. However, once installed and tested they would just on your system. And

It just took ages to install and test some huge and popular modules like Catalyst, Moose. However, once installed and tested they would just on your system. And it wasn't that easy for modules creators and core developers as red hat was notorious for shipping decades of Perl versions (5.10 times).