Rhai VS mun

For that world there is also Rhai (https://github.com/rhaiscript/rhai), TypeScript, Scheme, etc.

Though Moonbit does look nice too.

As far as I know there exists rhai scripting lang. You can check it out -> https://github.com/rhaiscript/rhai

Version 1.13.0 is released to crates.io.

Check out https://github.com/rhaiscript/rhai/blob/main/src/func/native.rs

The OS would be built in Rust and the module system could be made using ELF executibles (fast, but it could be really hard to implement modules to communicate with the kernel), WASM (can compile from many languages, slower but not too slow, APIs can be simple enough to implement if the correct VM is choses) or even a custom scripting language like rhai (slower, but best way for the implementation [way to connect modules and kernel]).

For sure, that's where something like rhai would shine: https://crates.io/crates/rhai

Mun is a statically typed language that compiles to machine code with LLVM, designed to be hot-reloadable: https://mun-lang.org/.

Perhaps https://mun-lang.org? Might be a bit raw for your needs tho.

But that’s not all! In total, this release contains 111 pull requests made by 5 of our community contributors and our two Core Team members & Dependabot. Thanks for having our back! For a full list have a look at the changelog, but the main improvements are:

Whenever I read about Mun, I'm always really, really intrigued… Until I remember that it currently has no string type and support for one is not currently planned. That's a bit of a shame, IMHO, because otherwise, this looks great!

There's mun [1] which is statically typed and AOT compiled.

1: https://github.com/mun-lang/mun

From the reverse-dependencies of the salsa crate, the (archived) Lark compiler used it and the Mun compiler uses it.

I notice that there are projects like mun trying to achieve a similar goal, but I'm kind of curious why they are not getting much attention from the community.

Have you heard of https://mun-lang.org/ ?

It's an embeddable scripting language with the goal of being a Rust-like language that supports hot reloading of functions AND data. To achieve the latter, it uses GC'ed memory such that memory can easily be mapped when the memory's type changes.

It's still in early development but maybe one day will serve your needs :)

In terms of pure Rust engines/frameworks it seems the overall "problem" is lack of scripting, at least from my perspective. Mun seemed extremely interesting, but since even the project itself says "don't use it" I guess it's not a real option, and considering the amount of time we spent on the GDScript/Rust integration I'm a little worried that rolling something more custom would be even less efficient.