GUI: Upgrade the default backend for matplotlib to QtAgg
#4328
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According to the doc: https://matplotlib.org/stable/api/backend_qt_api.html the Qt5Agg backend is deprecated in favor of QtAgg
t20100
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May 19, 2025
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t20100
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QtAgg was introduced in matplotlib/matplotlib#19255 and released in matplotlib 3.5.
Can you update the minimum required version of matplotlib in pyproject.toml?
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Checklist:
<Module or Topic>: <Action> <Summary>(see contributing guidelines)According to the doc:
https://matplotlib.org/stable/api/backend_qt_api.html the Qt5Agg backend is deprecated in favor of QtAgg