#78537 - GIMP startup crash on minimal xorg/wm unless gtk+ in profile

Package	Source(s)		Maintainer(s)
guix		PTS Buildd Popcon

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Date: Sun, 06 Jul 2025 19:32:40 +0000
To: Maxim Cournoyer <maxim.cournoyer@gmail.com>
From: Runciter <runciter@whispers-vpn.org>
Subject: Re: bug#78537: GIMP startup crash on minimal xorg/wm unless gtk+ in
 profile
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Hi,

"Maxim Cournoyer" <maxim.cournoyer@gmail.com> writes:

> Hi,
>
> Runciter <runciter@whispers-vpn.org> writes:
>
>> Hi,
>>
>> "Maxim Cournoyer" <maxim.cournoyer@gmail.com> writes:
>>
>>> Are you able to run it this way?
>>>
>>> --8<---------------cut here---------------start------------->8---
>>> ./pre-inst-env guix shell --pure gimp -- gimp
>>> --8<---------------cut here---------------end--------------->8---
>>>
>>> For me it still fails to run, apparently it fails to load its PNG icons.
>>> Maybe it also needs to be wrapped with GDK_PIXBUF_MODULE_FILE ?
>
> [...]
>
>> So... No revised patch and I guess I won't be able to make progress in
>> the near future. I'm kind of at the end of my wits with this, and
>> definitely lacking knowledge about gtk. Here's where I'm at:
>>
>> After applying my patch V3, that is to say wrapping the data files
>> directory of the gtk+ package into XDG_DATA_DIRS, you can get GIMP to
>> complete startup in a more minimal profile; most minimally, it can be
>> obtained with the following command:
>>
>> ./pre-inst-env guix shell --pure gimp gdk-pixbuf -- gimp
>
> Interesting!  As perhaps one last thing to check, you could compare the
> environment variables set in that profile, or compare the output of
> 'strace -e file -f -s200 gimp' when it works and doesn't.

Thanks for the advice Maxim, that did open new pathways for trial and
error.

I just submitted a patch version 4 which has gimp succeed at starting
without crashing in a pure shell.

Finally, it is very much necessary to export GDK_PIXBUF_MODULE_FILE from
the wrapper script, as you suggested. I must have missed it originally
because it is also imperative that gimp sees the data files of the
shared-mime-info package.

-- 
Runciter

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#78537 GIMP startup crash on minimal xorg/wm unless gtk+ in profile