Files
testium/src/testium/interpreter/test_items/dialog_env.py
François f17ef8a3a1 dialog_env: pick wayland/xcb from $DISPLAY/$WAYLAND_DISPLAY
Was forcing xcb unconditionally, which hung dialogs on pure-Wayland sessions.
2026-05-07 10:03:54 +02:00

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Python

"""Qt platform environment setup for dialog subprocesses.
Call setup() at the start of every dialog subprocess main() function
to ensure the correct Qt platform plugin is selected.
"""
import sys
import os
def setup():
"""Configure the Qt environment for dialog subprocess usage."""
if sys.platform.startswith('linux'):
if os.environ.get('DISPLAY'):
# X11 available: force xcb to avoid crashes in multiprocessing subprocesses.
os.environ['QT_QPA_PLATFORM'] = 'xcb'
elif os.environ.get('WAYLAND_DISPLAY'):
os.environ['QT_QPA_PLATFORM'] = 'wayland'