[mst]

I wonder if you'd get some mileage from my https://p3rl.org/Object::Remote module (or at least stealing the ideas therein ;) - it effectively applies https://p3rl.org/App::FatPacker on-demand over the wire so the remote code can use any (pure perl) module you've got installed locally without needing to be able to write to the disk.

(at https://shadow.cat/ we use it to investigate things on new customers' platforms with only an ssh login and a perl core install as requirements, along with as an ad-hoc "I need to run this on lots of machines without being intrusive" tool)