Switch from default #[tokio::main] to single-threaded

[ScottLinnn]

I have several microservices using the default #[tokio::main], and I want to change all of them to be single-threaded. While I can manually change the annotations to #[tokio::main(flavor = "current_thread")], I'm wondering is there a way to change this configuration without changing the annotations themselves? For example, I'm using axum, tower to set up middleware, is it possible to change runtime configuration there?

Thank you!

[Darksonn]

No. The only way to change this option is to set the flavor on the annotation itself.

In the past this was actually possible by disabling the rt-multi-thread feature of the Tokio crate, but this was changed because it caused a lot of confusion.

[ScottLinnn]

Thank you!