rez-gui: ModuleNotFoundError: No module named 'Qt'

[beatreichenbach]

Describe the bug here.

Environment

• Rocky Linux 8.10
• Rez version 3.2.1
• Rez python version 3.11.9

To Reproduce

rez-gui

Error:

[beat@... ~]$ rez-gui context.rxt
Traceback (most recent call last):
  File ".../rez/bin/rez/rez-gui", line 8, in <module>
    sys.exit(run_rez_gui())
             ^^^^^^^^^^^^^
  File ".../rez/lib64/python3.11/site-packages/rez/cli/_entry_points.py", line 155, in run_rez_gui
    return run("gui")
           ^^^^^^^^^^
  File ".../rez/lib64/python3.11/site-packages/rez/cli/_main.py", line 189, in run
    returncode = run_cmd()
                 ^^^^^^^^^
  File ".../rez/lib64/python3.11/site-packages/rez/cli/_main.py", line 181, in run_cmd
    return func(opts, opts.parser, extra_arg_groups)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".../rez/lib64/python3.11/site-packages/rez/cli/gui.py", line 24, in command
    from rezgui.app import run
  File ".../rez/lib64/python3.11/site-packages/rezgui/app.py", line 5, in <module>
    from rezgui.objects.App import app
  File ".../rez/lib64/python3.11/site-packages/rezgui/objects/App.py", line 5, in <module>
    from Qt import QtCore, QtWidgets, QtGui
ModuleNotFoundError: No module named 'Qt'

To fix:

• Install legacy Qt.py
• Install PySide2