I get a listing of the prerequisites that are missing, but the cpanm system won't automatically install them!

Looks to me that it's chasing down the dependencies and trying to install them - but some of the modules are failing to install.
First failure is for Data::OptList, for which we're told:

! Installing Data::OptList failed. See /Users/faelin/.cpanm/work/15430
+83528.5667/build.log for details. Retry with --force to force install
+ it.
[download]

I'd recommend having a look at that build.log to see what the problem was. If it's a test failure (and one that doesn't bother you), by all means take the advice of adding --force to the cpanm command that you're running, and see how that goes.

It would be best to show us what's in that build.log if you're unsure on how to proceed.

Cheers,
Rob