I hope it will be of use to whoever stumbles across it
Nice ... it will certainly be of use to me from time to time - and I intend to make use of it.
I've given it a couple of test runs and it seems fine.
I try to avoid using the CPAN* modules to handle installations, so having a script like this to tell me up front which modules I need to install is very handy.
It would be even more handy if it could tell me the order in which I needed to install the missing dependencies, though I suspect this capability might be a little difficult to provide. (Haven't yet had time to investigate that aspect.)