One question might be why, but I won't ask. If there was a Palm Perl I'd be happy.

You might not be able to load large modules; my Clie with 8MB RAM crashes for example playing a movie if I have less than a 1MB free. So even if you can store Perl and all your files in the memory stick or whatever you have, you will have to be careful with your use of memory. You will need to build yourself a porting layer library that simulates a lot. Not so sure you can even do :: if that indicates a module in a folder since there are no folders in palmos. But I wondered myself, even with only a small understanding of perl innards I wouldn't say impossible.

Possibly this would be doable to some degree if the folks with Palm Linux come out with the source code, maybe even before then.