installation problem: time_ns requires Python 3.7

Created by: ZacharieALES

I am using Ubuntu 18.04 and I am not able to make solaar work (even if I succeeded on another computer with Ubuntu a few months ago...). I cloned the repository and followed the installation instructions but I am not able to install one of the dependecies: hid-logitech-dj. The command sudo apt install hid-logitech-dj gives me: Unable to locate package hid-logitech-dj. Was this package removed from the repositories recently?

Do you know how I could install it? I was not able to find any help with google. It just lead me to a file hid-logitech-dj.c but I don't know what to do with it.

Without this package, I get the following error:

solaar: error: Traceback (most recent call last):
  File "/home/zach/.local/lib/python3.6/site-packages/solaar/cli/__init__.py", line 198, in run
    c = list(_receivers(hidraw_path))
  File "/home/zach/.local/lib/python3.6/site-packages/solaar/cli/__init__.py", line 104, in _receivers
    from logitech_receiver import Receiver
  File "/home/zach/.local/lib/python3.6/site-packages/logitech_receiver/__init__.py", line 36, in <module>
    from . import listener, status  # noqa: F401
  File "/home/zach/.local/lib/python3.6/site-packages/logitech_receiver/listener.py", line 28, in <module>
    from . import base as _base
  File "/home/zach/.local/lib/python3.6/site-packages/logitech_receiver/base.py", line 39, in <module>
    from .base_usb import ALL as _RECEIVER_USB_IDS
  File "/home/zach/.local/lib/python3.6/site-packages/logitech_receiver/base_usb.py", line 32, in <module>
    from .descriptors import DEVICES as _DEVICES
  File "/home/zach/.local/lib/python3.6/site-packages/logitech_receiver/descriptors.py", line 27, in <module>
    from .settings_templates import FeatureSettings as _FS
  File "/home/zach/.local/lib/python3.6/site-packages/logitech_receiver/settings_templates.py", line 27, in <module>
    from solaar.ui import notify as _notify
  File "/home/zach/.local/lib/python3.6/site-packages/solaar/ui/__init__.py", line 29, in <module>
    from logitech_receiver.status import ALERT  # NOQA: E402 # isort:skip
  File "/home/zach/.local/lib/python3.6/site-packages/logitech_receiver/status.py", line 29, in <module>
    from . import settings as _settings
  File "/home/zach/.local/lib/python3.6/site-packages/logitech_receiver/settings.py", line 27, in <module>
    from time import time_ns as _time_ns
ImportError: cannot import name 'time_ns'