packages/pip + py import error

Hi,

great project, I need to have a deeper look into it when I have time.
pip is running into errors installing cairo, so I installed it via apt.

python3-cairo python3-cairo-dev libcairo2-dev libgirepository1.0-dev
(after removing them again pip build was successfully) ... weird

starting remapper.py or also web.py is resulting in

remapper.py

Traceback (most recent call last):
  File "/home/pi/bthidhub/remapper.py", line 10, in <module>
    from adapter import BluetoothAdapter
  File "/home/pi/bthidhub/adapter.py", line 7, in <module>
    from hid_devices import *
  File "/home/pi/bthidhub/hid_devices.py", line 16, in <module>
    from compatibility_device import CompatibilityModeDevice
  File "/home/pi/bthidhub/compatibility_device.py", line 2, in <module>
    from hidtools.uhid import UHIDDevice
  File "/usr/local/lib/python3.9/dist-packages/hidtools/uhid.py", line 21, in <module>
    import hidtools.hid
  File "/usr/local/lib/python3.9/dist-packages/hidtools/hid.py", line 26, in <module>
    from hidtools.hut import HUT, U8, U16, U32
  File "/usr/local/lib/python3.9/dist-packages/hidtools/hut.py", line 27, in <module>
    from typing import (
ImportError: cannot import name 'TypeAlias' from 'typing' (/usr/lib/python3.9/typing.py)

web.py

Traceback (most recent call last):
  File "/home/pi/bthidhub/web.py", line 6, in <module>
    from hid_devices import *
  File "/home/pi/bthidhub/hid_devices.py", line 16, in <module>
    from compatibility_device import CompatibilityModeDevice
  File "/home/pi/bthidhub/compatibility_device.py", line 2, in <module>
    from hidtools.uhid import UHIDDevice
  File "/usr/local/lib/python3.9/dist-packages/hidtools/uhid.py", line 21, in <module>
    import hidtools.hid
  File "/usr/local/lib/python3.9/dist-packages/hidtools/hid.py", line 26, in <module>
    from hidtools.hut import HUT, U8, U16, U32
  File "/usr/local/lib/python3.9/dist-packages/hidtools/hut.py", line 27, in <module>
    from typing import (
ImportError: cannot import name 'TypeAlias' from 'typing' (/usr/lib/python3.9/typing.py)

Thanks for help or hints

File a bug report against hidtools. They've release a package that claims to support Python 3.6+, yet tries to import things that only exist in Python 3.10+.

using 3.1+ helps?

hidtools==0.3.1? It was released only a little earlier, so may or may not have the same issue. I guess 0.2 is the version we were using when testing, but getting hidtools to fix their testing/packaging would avoid us needing to pin to a specific release.

Can confirm that changing the line:

bthidhub/install/on_rpi/on_pi_setup.sh

Line 36 in 391044c

sudo pip3 install hid-tools

To:
sudo pip3 install hid-tools==0.2

Fixes the error.