no_std support?

[huangjj27]

Recently I read that zCore has implemented async/await support on OS level by making their own executor, proving that async runtime can be run on no_std. Can we also support no_std?

[alilleybrinker]

I believe no_std support for async/await is coming with the next Rust version.

[ghost]

Well, which parts of smol would even be available in no_std environments? :) The reactor requires networking, which is provided by std. Blocking executor doesn't make sense without types for stdin/stdout/stderr and files. I could be missing something here, though!

[llebout]

I'm guessing this goes hand in hand with providing an interface for people to implement their own reactors. Embedded typically has to come up with their own TCP/IP stack like LWIP or PicoTCP.

See for example, this project that implements support for them: https://github.com/cesanta/mongoose

[ghost]

Closing this issue due to inactivity. I don't think it makes too much sense for smol to provide anything no_std. That would basically entail some parts of futures-lite, which you can use directly and disable the std feature flag in it.