Bug 416474

Summary:	appimage: Cannot mix incompatible Qt library
Product:	[Applications] krita	Reporter:	Alejandro Vargas <alejandro.anv>
Component:	General	Assignee:	Krita Bugs <krita-bugs-null>
Status:	RESOLVED NOT A BUG
Severity:	crash	CC:	halla
Priority:	NOR
Version First Reported In:	4.2.8
Target Milestone:	---
Platform:	Appimage
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Alejandro Vargas 2020-01-19 19:15:15 UTC

Cannot execute krita-4.2.8-x86_64.appimage in Mageia 7

The splash screen is shown but it aborts with the error:

Set style "fusion"
QObject::startTimer: Timers cannot have negative intervals
/tmp/.mount_krita-HoSYgI/usr/lib/krita-python-libs/krita added to PYTHONPATH
Cannot mix incompatible Qt library (version 0x50c06) with this library (version 0x50c05)
Abortado (`core' generado)


Being an appimage... it should work anywhere...

Tried flatpak version. It works but can't save files.

Comment 1 Halla Rempt 2020-01-19 20:43:09 UTC

I'm sorry, but that's a distribution issue. Maybe they set QT_PLUGIN_PATH, or there's something else, but it's not something we can solve.

Comment 2 Alejandro Vargas 2020-01-20 09:23:46 UTC

(In reply to Boudewijn Rempt from comment #1)
> I'm sorry, but that's a distribution issue. Maybe they set QT_PLUGIN_PATH,
> or there's something else, but it's not something we can solve.

Are not appimages supposed to contain everything necessary to run independently of the rest of the system?

Comment 3 Alejandro Vargas 2020-01-20 09:35:31 UTC

(In reply to Boudewijn Rempt from comment #1)
> I'm sorry, but that's a distribution issue. Maybe they set QT_PLUGIN_PATH,
> or there's something else, but it's not something we can solve.


Solved the problem by unset QT_PLUGIN_PATH. You sould include this in the appimage for preventing it to try to use the system's QT plugins or at least do this when the system's QT vrsion is different than th included in the appimage.

Comment 4 Halla Rempt 2020-01-20 11:50:14 UTC

If there is a global QT_PLUGIN_PATH set that's a bug in the distribution: this variable should not be set globally. See https://doc.qt.io/qt-5/deployment-plugins.html

Comment 5 Alejandro Vargas 2020-01-21 08:39:53 UTC

(In reply to Boudewijn Rempt from comment #4)
> If there is a global QT_PLUGIN_PATH set that's a bug in the distribution:
> this variable should not be set globally. See
> https://doc.qt.io/qt-5/deployment-plugins.html

Ok, reported to Mageia: https://bugs.mageia.org/show_bug.cgi?id=26112

Comment 6 Halla Rempt 2020-01-21 08:40:39 UTC

Awesome, thanks!