Is it possible to use with wasm32-unknown-unkown target

[geofmureithi]

I am looking to use Ruby as a scripting solution. Is it possible to compile(or use) to wasm32-unknown-unkown target?
Currently I can do this:

wasmtime ruby.wasm -- /src/my_app.rb

I am curious if I can use it without wasi(assuming I have a text blob which is valid ruby code). I am hoping there can be a function like run.