> why Rust and Python put so much effort into adding event loops after the fact.

Perhaps Python, but Rust went the other way - it had all that stuff built and it was removed.

Er yeah technically the event loop isn't part of Rust, just the async/await syntax. But it's implied that you're going to use some event loop with it.

	▲	tracker1 4 hours ago \| parent [-]
		No, it's implied that you're going to use some sort of async runtime with it... said runtime can be simple real threads, a thread pool or virtual threads and there are implementations for all of them. And even then, it's super easy to start a new real thread in rust, around any async runtime.