Yes this seems like the main way to go. With dependency injection using "dyn" traits on top of that, it seems that this mostly solves the compilation issues with Rust. It might be better for tests and agents to split code in small chunks too.
replyI am experimenting with this in my project right now. I haven't reached a verdict yet, but in theory it sounds good. I think you're still paying the linking cost though?
replyYes.
replySplitting out a project into multiple crates reduces what needs to be recompiled during development. I tend to break out areas of my application that aren't going to change regularly so I'm only having to rebuild the main application.
In a production scenario where you're probably building your application in some CI environment, unless you cache the release build artifacts to re-use when applicable, the entire project will be rebuilt every run.