Thanks for your prompt reply!
I was trying to avoid CPAN shell but it all got very complicated after that. Turns out Test::More requires Storable which is XS and that made me install gcc and make, which is not even available, etc. etc. so it got pretty hairy but incredibly I got it working. I actually have Mojolicious running on an Arduino Yśn !!!
I kept pretty good notes so I decided to make this tutorial to help others and possibly get some collaboration to make this more native to the OpenWRT crowd:
Embedded Perl: Installing Perl and Mojolicious on Arduino Yśn / OpenWRT ChaosCalmer