Issue description

Tried to use extensions.CommandSet to write simple “Power menu”

After selecting restart qtile or logout, qtile freezes for couple of seconds.

Qtile version

0.18.0

Stack traces

• ~/.xsession-errors

Traceback (most recent call last):
  File "/usr/lib64/python3.9/asyncio/streams.py", line 677, in read
    block = await self.read(self._limit)
  File "/usr/lib64/python3.9/asyncio/streams.py", line 684, in read
    await self._wait_for_data('read')
  File "/usr/lib64/python3.9/asyncio/streams.py", line 517, in _wait_for_data
    await self._waiter
asyncio.exceptions.CancelledError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib64/python3.9/asyncio/tasks.py", line 492, in wait_for
    fut.result()
asyncio.exceptions.CancelledError

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/tokariew/.local/lib/python3.9/site-packages/libqtile/ipc.py", line 183, in async_send
    read_data = await asyncio.wait_for(reader.read(), timeout=10)
  File "/usr/lib64/python3.9/asyncio/tasks.py", line 494, in wait_for
    raise exceptions.TimeoutError() from exc
asyncio.exceptions.TimeoutError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/tokariew/.local/bin/qtile", line 8, in <module>
    sys.exit(main())
  File "/home/tokariew/.local/lib/python3.9/site-packages/libqtile/scripts/main.py", line 55, in main
    options.func(options)
  File "/home/tokariew/.local/lib/python3.9/site-packages/libqtile/scripts/cmd_obj.py", line 169, in cmd_obj
    ret = run_function(obj, args.function, args.args)
  File "/home/tokariew/.local/lib/python3.9/site-packages/libqtile/scripts/cmd_obj.py", line 131, in run_function
    ret = client.call(funcname, *args)
  File "/home/tokariew/.local/lib/python3.9/site-packages/libqtile/command/client.py", line 118, in call
    if name not in self.commands:
  File "/home/tokariew/.local/lib/python3.9/site-packages/libqtile/command/client.py", line 138, in commands
    return self._command.execute(command_call, (), {})
  File "/home/tokariew/.local/lib/python3.9/site-packages/libqtile/command/interface.py", line 231, in execute
    status, result = self._client.send((
  File "/home/tokariew/.local/lib/python3.9/site-packages/libqtile/ipc.py", line 163, in send
    return asyncio.run(self.async_send(msg))
  File "/usr/lib64/python3.9/asyncio/runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "/usr/lib64/python3.9/asyncio/base_events.py", line 642, in run_until_complete
    return future.result()
  File "/home/tokariew/.local/lib/python3.9/site-packages/libqtile/ipc.py", line 185, in async_send
    raise IPCError("Server not responding")
libqtile.ipc.IPCError: Server not responding
2021-08-30 19:13:20,448 ERROR libqtile loop.py:_handle_exception():L59 [Errno 32] Broken pipe
NoneType: None

• ~/.local/share/qtile/qtile.log

Log file have only last 2 lines from .xsession-errors

Configuration

from libqtile import extension

key_exensions = Key([mod], 's', lazy.run_extension(extension.CommandSet(
    commands={
        'reboot': 'reboot',
        'shutdown': 'shutdown',
        'suspend': 'systemctl suspend',
        'lock session': '/home/tokariew/.local/bin/lockme',
        'restart qtile': 'qtile cmd-obj -o cmd -f restart',
        'logout': 'qtile cmd-obj -o cmd -f shutdown',
        },
    dmenu_lines=6))),

keys.extend(key_exensions)