QT dependency

[MarkWendler]

Investigate the QT dependency issue related to python versions.

(.venv) C:\Users\c14317>python -m pyx2cscope
Traceback (most recent call last):
  File "<frozen runpy>", line 198, in _run_module_as_main
  File "<frozen runpy>", line 88, in _run_code
  File "C:\Users\c14317\.venv\Lib\site-packages\pyx2cscope\__main__.py", line 114, in <module>
    gui.execute_qt(unknown_args, **known_args.__dict__)
  File "C:\Users\c14317\.venv\Lib\site-packages\pyx2cscope\gui\__init__.py", line 17, in execute_qt
    from pyx2cscope.gui.generic_gui.generic_gui import X2cscopeGui
  File "C:\Users\c14317\.venv\Lib\site-packages\pyx2cscope\gui\generic_gui\generic_gui.py", line 13, in <module>
    import matplotlib
  File "C:\Users\c14317\.venv\Lib\site-packages\matplotlib\__init__.py", line 264, in <module>
    _check_versions()
  File "C:\Users\c14317\.venv\Lib\site-packages\matplotlib\__init__.py", line 258, in _check_versions
    module = importlib.import_module(modname)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\c14317\AppData\Local\miniconda3\Lib\importlib\__init__.py", line 90, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\c14317\.venv\Lib\site-packages\kiwisolver\__init__.py", line 8, in <module>
    from ._cext import ( 
ModuleNotFoundError: No module named 'kiwisolver._cext'

[edras]

#93