Running flatpak fails with "No module named 'pyparsing' "

[chipmuenk]

Running the flatpak from Flathub or pyfda releases

flatpak run com.github.chipmuenk.pyfda

fails with

Traceback (most recent call last):
  File "/app/bin/pyfdax", line 33, in <module>
    sys.exit(load_entry_point('pyfda==0.7.1', 'console_scripts', 'pyfdax')())
  File "/app/bin/pyfdax", line 25, in importlib_load_entry_point
    return next(matches).load()
  File "/usr/lib/python3.9/importlib/metadata.py", line 86, in load
    module = import_module(match.group('module'))
  File "/usr/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 850, in exec_module
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "/app/lib/python3.9/site-packages/pyfda/pyfdax.py", line 20, in <module>
    import matplotlib
  File "/app/lib/python3.9/site-packages/matplotlib/__init__.py", line 113, in <module>
    from . import _api, _version, cbook, _docstring, rcsetup
  File "/app/lib/python3.9/site-packages/matplotlib/rcsetup.py", line 28, in <module>
    from matplotlib._fontconfig_pattern import parse_fontconfig_pattern
  File "/app/lib/python3.9/site-packages/matplotlib/_fontconfig_pattern.py", line 15, in <module>
    from pyparsing import (Literal, ZeroOrMore, Optional, Regex, StringEnd,
ModuleNotFoundError: No module named 'pyparsing'

There have been some deprecation warnings during the build process (which I can't find right now). The action 'bilelmoussaoui/flatpak-github-actions@v4' probably is outdated and should be replaced by 'flatpak/flatpak-github-actions' but I'm just guessing here.

@Murmele : could you perhaps take a look at this?