Hi, thanks, glad to hear you enjoy my other work! :)

And yes, you absolutely can drop both down to Scheme and do FFI to drive native libs as well

https://jolt-lang.github.io/docs/host-interop.html

https://jolt-lang.github.io/docs/native-interop.html

I actually leverage this myself in libraries, I ended up writing a Java time layer to support tick here, and I decided to make it a library since I wanted the core executable to stay self contained, and Chez doesn't provide timezone handling natively. So, time pulls in a shared system library and shims a Java style API over it that tick can use

https://github.com/jolt-lang/time

And I'm doing FFI in Glimmer to provide a Reagent style reactive library on top of GTK

https://github.com/jolt-lang/glimmer

It ended up working pretty well for a project here https://github.com/yogthos/splat-painter

Definitely excited with the progress so far. It's obviously still very fresh, and there are likely bugs and quirks abound, but I find it's already quite usable for my own personal projects.