Fibers work on macOS is being done here. https://github.com/wingo/fibers/pull/42

This is now working with both web servers.

On Wed, Jul 29, 2020 at 5:06 PM Aleix Conchillo Flaqué <aconchillo@gmail.com> wrote:
SOCK_NONBLOCK was not implemented when accept4() is not available (e.g. macOS).

I'm currently testing all this with the two new web server implementations provided with Fibers.

Aleix