Draft workbench Offset function doesn't work After ArchLinux patched FreeCAD to use Qt6/PySide6

Description:

Bug report:

With a closed sketch, using the Draft workbench Offset toolbar button ( https://wiki.freecad.org/Draft_Offset ) causes the following error message to be dumped to the Report View:

15:48:04  GuiCommand: Offset
15:48:04  Running the Python command 'Draft_Offset' failed:
Traceback (most recent call last):
  File "/usr/lib/freecad/Mod/Draft/draftguitools/gui_offset.py", line 87, in Activated
    self.proceed()
  File "/usr/lib/freecad/Mod/Draft/draftguitools/gui_offset.py", line 103, in proceed
    self.ui.offsetUi()
  File "/usr/lib/freecad/Mod/Draft/DraftGui.py", line 864, in offsetUi
    self.taskUi(translate("draft","Offset"), icon="Draft_Offset")
  File "/usr/lib/freecad/Mod/Draft/DraftGui.py", line 714, in taskUi
    self.setupToolBar(task=True)
  File "/usr/lib/freecad/Mod/Draft/DraftGui.py", line 409, in setupToolBar
    boldtxt.setWeight(75)

'PySide6.QtGui.QFont.setWeight' called with wrong argument types:
  PySide6.QtGui.QFont.setWeight(int)
Supported signatures:
  PySide6.QtGui.QFont.setWeight(PySide6.QtGui.QFont.Weight)

Possible reason:

The traceback refers to this line in FreeCAD source code: https://github.com/FreeCAD/FreeCAD/blob/main/src/Mod/Draft/DraftGui.py#L315C17-L315C26

..where an integer is given as an argument to the Qt's font setWeight function
..whereas the documentation states that the function accepts another type, not an integer: https://doc.qt.io/qtforpython-6/PySide6/QtGui/QFont.html#PySide6.QtGui.PySide6.QtGui.QFont.setWeight

I believe this bug has come about because ArchLinux patched FreeCAD to use Qt6/PySide6, whereas the FreeCAD sourcecode doesn't yet support this. As per: https://gitlab.archlinux.org/archlinux/packaging/packages/freecad/-/commits/main

Additional info:

  • package version(s): freecad 0.21.2-8
  • additional package versions: qt6-base 6.6.3-1 (qt6), pyside6 6.6.2-2
  • not affected version: freecad 0.21.2-6
  • config and/or log files: n/a
  • link to upstream bug report, if any:
    "Premature migration to QT6, breaking several features."
    Reported by someone on EndeavourOS, which appears to be built on top of Arch Linux.

Steps to reproduce:

  1. Create a sketch and for example a circle inside of it.
  2. Switch to Draft workbench.
  3. Click the Offset toolbar button.
  4. Observe traceback in the Report View area.