Re: [PATCH 06/13] img/app: remove XDG_RUNTIME_DIR

[Alyssa Ross <hi@alyssa.is>]

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

> On 11/26/25 16:33, Alyssa Ross wrote:
>> Nothing uses this any more, and let's hope it stays that way, because
>> it makes it difficult to run services as different users.  Maybe we
>> end up finding something that really needs it in the future, but it
>> makes things much easier to avoid it for as long as we can.
>> 
>> Older applications might not support WAYLAND_DISPLAY being absolute,
>> but this has been changed in libwayland and GTK.  We don't need to
>> support arbitrarily old applications, and this problem will resolve
>> itself over time.
>
> Applications may use XDG_RUNTIME_DIR for their own purposes.  I believe
> gpg-agent might use it to place its sockets.  This does not mean
> that Spectrum-provided sockets need to be in this directory, though.
> I would set it to the standard /run/user/$UID where $UID is the user
> ID of the application.
>
> If compatibility is a problem, bind mounts are an option.

	If $XDG_RUNTIME_DIR is not set applications should fall back to
	a replacement directory with similar capabilities and print a
	warning message.

We certainly can still set it, but with no definitively known
regressions, and the specification indicating it doesn't have to exist,
I'm not going to block these changes on it.

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