Pack full Hoot Scheme in one module and run Scheme REPL on startup

Hello!

Recently I thought about how to increment changes in one wasm module by another, and conclude that having whole scheme repl inside a wasm module would be the best option by now.

But I dont understand how to do it, or rather is it technically possible.

P.S. Or there is another options to load new piece of code on top of another in wasm?