[systemd-devel] User wayland session, conceptual questions

[Vladimir Kudrya]

On 10/02/2023 12.51, Mantas Mikulėnas wrote:
>
>     Also systemd.special manual recommends putting display servers
>     into session.slice. But in case of a wayland compositor it is
>     impossible to separate it from the apps, because the compositor
>     handles keyboard shortcuts (which launch apps or launchers which
>     launch apps). Is this recommendation even feasible for wayland?
>
> Yes; the compositor can use systemd D-Bus API to launch apps in their 
> own .scopes underneath app.slice (or transient .services), as e.g. 
> GNOME Shell already does.
>
> (For a different use of the same API, see also how GNOME Terminal – or 
> libvte, I guess – launches each terminal tab in its own .scope. You 
> can forkbomb a single tab without significantly affecting the rest of 
> the system.)
If one does not want to mess with dbus, is prefixing app commands in 
compositor's configuration with `systemd-run --user --scope 
--slice=app.slice ...` a valid alternative?
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