The game Unknown Horizons (from the repo) fails to launch with the following error:
Traceback (most recent call last):
File "/usr/bin/unknown-horizons", line 381, in <module>
main()
File "/usr/bin/unknown-horizons", line 122, in main
ret = horizons.main.start(options)
File "/usr/lib/python3.9/site-packages/horizons/main.py", line 113, in start
horizons.globals.fife = Fife()
File "/usr/lib/python3.9/site-packages/horizons/engine/engine.py", line 46, in __init__
self._setting = Settings(PATHS.USER_CONFIG_FILE, PATHS.SETTINGS_TEMPLATE_FILE)
File "/usr/lib/python3.9/site-packages/horizons/engine/settings.py", line 39, in __init__
self._settings_serializer.load(settings_file)
File "/usr/lib/python3.9/site-packages/fife/extensions/serializers/simplexml.py", line 132, in load
self._validateTree()
File "/usr/lib/python3.9/site-packages/fife/extensions/serializers/simplexml.py", line 386, in _validateTree
for c in self._root_element.getchildren():
AttributeError: 'xml.etree.ElementTree.Element' object has no attribute 'getchildren'After a bit of research it seems we should add the following patch to fifengine, to restore compatibility with Python >= 3.9 and fix this error:
https://github.com/fifengine/fifengine/commit/78c07b9ac4df03329bcaf052557b9c9450b18d3a
There is also a Python 3.9 fix commit for Unknown Horizons itself, which might be worth including while we're at it:
https://github.com/unknown-horizons/unknown-horizons/commit/7f6f613826aef9810999c1599c8354e8a78fbdb4
(and maybe this to fix a warning: https://github.com/unknown-horizons/unknown-horizons/commit/05267e0d7f1223ddd0517f4f02c4d8444668f559)
Adding @DataDrake because she is the maintainer.