I've just added the currently supported languages you can execute to runme.dev in the features section (Javascript, Typescript, Shell, Lua, Perl, Python and Ruby for now). Also, the Runme CLI (https://github.com/stateful/runme) also supports running cells in parallel with `runme run -all -p`.
We'd be interested to know how we can help Runme satisfy your use cases, join us on Discord! https://discord.gg/runme
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)
We'd be interested to know how we can help Runme satisfy your use cases, join us on Discord! https://discord.gg/runme