Swift Concurrency in non-eventloop contexts (e.g. CLI tools)

[Joe_Groff]

@sergiocampama

Ah great, I'll wait for swift-argument-parser to adopt it then.

But swift-argument-parser still needs MainApp.main() to be invoked, and it should handle the awaiting of the main task through the mechanism I'm asking about in this thread, no? i.e. swift-argument-parser doesn't use @main afaict.

And also, while @main would solve this by allowing the async version of main , it still can't be used in SPM executable targets, since it's incompatible with main.swift , are there plans for that to be fixed?

The Swift runtime uses its own mechanism to manage the lifetime of the process. Unfortunately, main.swift does not yet support async code, but I would generally recommend using an @main type with an async main function, instead of trying to do your own synchronization. I believe swiftpm should support executables that use @main instead of main.swift now.