From da53a97bf3bf9e15a5315cd3c42e5c00ca8dc9f1 Mon Sep 17 00:00:00 2001
From: 0penBrain <48731257+0penBrain@users.noreply.github.com>
Date: Wed, 26 Apr 2023 18:51:58 +0200
Subject: [PATCH] [Bugfix]Plot: reintroduce patch removed by #9103

 While FC don't depend on PyQt anymore, patch is needed to have
 matplotlib working correctly

 https://github.com/FreeCAD/FreeCAD/commit/935994dd2d3233627063b2a4dc51e0bbf69ba077#r108628060
---
 src/Mod/Plot/Plot.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/Mod/Plot/Plot.py b/src/Mod/Plot/Plot.py
index 78e117439c..a57d501814 100644
--- a/src/Mod/Plot/Plot.py
+++ b/src/Mod/Plot/Plot.py
@@ -30,7 +30,13 @@ try:
     import matplotlib
     matplotlib.use('Qt5Agg')
 
-    import matplotlib.pyplot as plt
+    # Force matplotlib to use PySide backend by temporarily unloading PyQt
+    if 'PyQt5.QtCore' in sys.modules:
+        del sys.modules['PyQt5.QtCore']
+        import matplotlib.pyplot as plt
+        import PyQt5.QtCore
+    else:
+        import matplotlib.pyplot as plt
 
     from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
     from matplotlib.backends.backend_qt5agg import NavigationToolbar2QT as NavigationToolbar