Re: [oe-core][PATCHv2 0/3] Display manager proposal for x11 and wayland

["Mathieu Dubois-Briand" <mathieu.dubois-briand@bootlin.com>]

On Tue May 6, 2025 at 12:47 AM CEST, rs wrote:
> From: Randolph Sapp <rs@ti.com>
>
> We've recently run into some issues with weston-init attempting to start
> Weston prior to all drm devices being registered. There's not really a
> good, scriptable mechanism to listen in to device registration events
> that works with the existing weston-init package. Well, at least one
> that doesn't involve polling files or introducing more dependency on the
> init system being used.
>
> I also see there is also a lot of scripting around starting X11,
> xserver-nodm-init, that (from my limited review) should experience the
> same issue.
>
> I'd like to introduce the following display manager for oe-core, emptty
> [1]. This display manager is, as described upstream, a "Dead simple CLI
> Display Manager on TTY". It supports both x11 and wayland sessions, with
> togglable build parameters to completely remove x11 and pam
> dependencies. It's licensed MIT, which shouldn't be an issue for any
> users. (It is written in Go, if you have opinions about that.)
>
> With this, both weston-init and the xserver-nodm-init packages can be
> re-tuned to leverage this display manager and simply add a user and
> emptty config for an autologin session. This can resolve the current
> behavior across init systems without additional scripting, and move some
> development out of this layer.
>
> This lists myself as a maintainer of emptty as well as xserver-nodm-init and
> xuser-account since these are currently unassigned and I've reworked them
> significantly here.
>
> Sorry for the delay on this series. I found a few bugs in emptty that I wanted
> to address before submitting this officially.
>
> [1] https://github.com/tvrzna/emptty
>
> v2:
> 	- Address spelling issues in commit messages
> 	- Attempt to resolve some test related issues with weston
> 	- Add additional logs to X11 related tests

Hi Randolph,

Thanks for the v2.

However, it looks like we still have an error with the emptty
dependency:

ERROR: Nothing RPROVIDES 'emptty' (but /srv/pokybuild/yocto-worker/qemux86-64-x32/build/meta/recipes-graphics/x11-common/xserver-nodm-init_3.0.bb RDEPENDS on or otherwise requires it)
emptty was skipped: incompatible with host x86_64-poky-linux-gnux32 (not in COMPATIBLE_HOST)

https://autobuilder.yoctoproject.org/valkyrie/#/builders/11/builds/1512

Can you have a look at the issue please?

-- 
Mathieu Dubois-Briand, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com