Public bug reported:
MyPaint fails to start on Ubuntu 26.04 (Resolute) when installed from
official repositories.
The application crashes immediately with the following traceback:
INFO: mypaint: Installation layout: conventional POSIX-like structure with
prefix '/usr'
Traceback (most recent call last):
File "/usr/bin/mypaint", line 309, in <module>
main.main(
File "/usr/lib/mypaint/gui/main.py", line 133, in main
lib.glib.init_user_dir_caches()
File "/usr/lib/mypaint/lib/glib.py", line 193, in init_user_dir_caches
k.value_name,
AttributeError: 'UserDirectory' object has no attribute 'value_name'
System information:
- Ubuntu version: 26.04 (Resolute)
- MyPaint version: 2.0.1-14build1 (from Ubuntu universe repository)
- PyGObject version: 3.56.2
- Python version: 3.x (system default)
Expected behavior:
MyPaint should start normally.
Actual behavior:
Application crashes immediately at startup due to missing attribute
'value_name' in GLib UserDirectory enum wrapper.
Notes:
- The issue appears to be caused by incompatibility between MyPaint 2.0.1 and
newer PyGObject / GLib introspection bindings.
** Affects: mypaint (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2154737
Title:
MyPaint 2.0.1 crashes at startup on Ubuntu 26.04 with PyGObject 3.56.2
(AttributeError: UserDirectory has no attribute value_name)
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