8000 Fix qt backend on mac big sur by ericpre · Pull Request #19334 · matplotlib/matplotlib · GitHub
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Fix qt backend on mac big sur #19334

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Merged
merged 3 commits into from
Jan 29, 2021
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Fix qt backend on mac big sur #19334

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0065d4b
Set `QT_MAC_WANTS_LAYER='1'` on mac to fix issue with the qt backend …
ericpre Jan 21, 2021
ccfdf5a
Fix linting.
ericpre Jan 21, 2021
76e8260
Set environment variable only on macos big sur and if it isn't alread…
ericpre Jan 23, 2021
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7 changes: 7 additions & 0 deletions lib/matplotlib/backends/qt_compat.py
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Original file line number Diff line number Diff line change
Expand Up @@ -180,6 +180,13 @@ def is_pyqt5():
raise AssertionError("Unexpected QT_API: {}".format(QT_API))


# Fixes issues with Big Sur
# https://bugreports.qt.io/browse/QTBUG-87014, fixed in qt 5.15.2
if (sys.platform == 'darwin' and
LooseVersion(QtCore.qVersion()) < LooseVersion('5.15.2')):
os.environ['QT_MAC_WANTS_LAYER'] = '1'


# These globals are only defined for backcompatibility purposes.
ETS = dict(pyqt=(QT_API_PYQTv2, 4), pyside=(QT_API_PYSIDE, 4),
pyqt5=(QT_API_PYQT5, 5), pyside2=(QT_API_PYSIDE2, 5))
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