$ python3 -c 'import trezorlib;\
> from trezorlib import client, ckd_public, transport_hid;\
> print(trezorlib, client, ckd_public, transport_hid)'
Traceback (most recent call last):
File "<string>", line 2, in <module>
File "/usr/lib/python3/dist-packages/trezorlib/transport_hid.py", line 22, in
<module>
import hid
ModuleNotFoundError: No module named 'hid'Installing python3-hid fixes the issue. grtz, Sander

