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Nyx 2.0.4 at Linux. How to reproduce:

1. Go to configuration editor.
2. Press s and select the following order: Is Set, Name, Description.
3. "Toggle filtering" by pressing a.
4. Nyx immediately crashes with the following log:

Traceback (most recent call last):
  File "/usr/local/bin/nyx", line 9, in <module>
    load_entry_point('nyx==2.0.4', 'console_scripts', 'nyx')()
  File "/usr/local/lib/python3.4/dist-packages/nyx/__init__.py", line 176, in main
    nyx.starter.main()
  File "/usr/local/lib/python3.4/dist-packages/stem/util/conf.py", line 289, in wrapped
    return func(*args, config = config, **kwargs)
  File "/usr/local/lib/python3.4/dist-packages/nyx/starter.py", line 118, in main
    nyx.curses.start(nyx.draw_loop, acs_support = config.get('acs_support', True), transparent_background = True, cursor = False)
  File "/usr/local/lib/python3.4/dist-packages/nyx/curses.py", line 217, in start
    curses.wrapper(_wrapper)
  File "/usr/lib/python3.4/curses/__init__.py", line 94, in wrapper
    return func(stdscr, *args, **kwds)
  File "/usr/local/lib/python3.4/dist-packages/nyx/curses.py", line 215, in _wrapper
    function()
  File "/usr/local/lib/python3.4/dist-packages/nyx/__init__.py", line 243, in draw_loop
    keybinding.handle(key)
  File "/usr/local/lib/python3.4/dist-packages/nyx/panel/__init__.py", line 84, in handle
    self._action()
  File "/usr/local/lib/python3.4/dist-packages/nyx/panel/config.py", line 258, in _toggle_show_all
    self._sort_content()
  File "/usr/local/lib/python3.4/dist-packages/nyx/panel/config.py", line 325, in _sort_content
    self._all_content = sorted(self._all_content, key = lambda entry: [entry.sort_value(field) for field in self._sort_order])
  File "/usr/local/lib/python3.4/dist-packages/nyx/panel/config.py", line 325, in <lambda>
    self._all_content = sorted(self._all_content, key = lambda entry: [entry.sort_value(field) for field in self._sort_order])
  File "/usr/local/lib/python3.4/dist-packages/nyx/panel/config.py", line 325, in <listcomp>
    self._all_content = sorted(self._all_content, key = lambda entry: [entry.sort_value(field) for field in self._sort_order])
  File "/usr/local/lib/python3.4/dist-packages/nyx/panel/config.py", line 128, in sort_value
    return self.description
  File "/usr/local/lib/python3.4/dist-packages/nyx/panel/config.py", line 148, in description
    return getattr(manual(self.name), 'description')
AttributeError: 'NoneType' object has no attribute 'description'

I guess it would also crash with many other types of ordering.

Trac:
Username: wagon