Demi Marie Obenour <demiobenour@gmail.com> writes:

> This allows Weston to launch even if there if /dev/dri/card0 does not
> exist.
>
> This requires a shell script for string processing.  It could be written
> in Rust, but that's not worth it for a temporary workaround.
>
> It also prevents waiting for the card to be ready.  Instead, let s6
> restart Weston over and over until Weston finally runs.
>
> Signed-off-by: Demi Marie Obenour <demiobenour@gmail.com>
> ---
> This makes Spectrum work on my AMD system.

This made me look into the underlying issue a bit more.  What happens if
you just remove the udevadm wait?  Does everything seem to work okay?

My guess would be yes, because from what I can tell, the original
problem was probably that Weston was started before the DRM kernel
module was loaded.  (systemd-logind.service has a dependency on
modprobe@drm.service, and we had no such equivalent).  Nowadays, DRM is
built in to Nixpkgs kernels, so that shouldn't be able to happen any
more.  I think we should therefore be able to just drop the wait, and
its equivalents in img/app and release/checks/wayland.