[BUG] Cannot start systemd service

[igorsantos07]

Describe the bug
Possibly related to the complaints at #15. I've submitted #33 with systemd instructions, but turns out my tries cause Python errors I have no clue how to solve.

To Reproduce
If I run the application manually, it works great. However, the following /etc/systemd/system/halinuxcompanion.service yields errors:

[Unit]
Description=Home Assistant Linux Companion
Documentation=https://github.com/muniter/halinuxcompanion
After=networking.target

[Service]
WorkingDirectory=/opt/halinuxcompanion
ExecStart=/opt/halinuxcompanion/.venv/bin/python -m halinuxcompanion -c config.json
Restart=always
RestartSec=30
# User=igor # I tried adding this, but doesn't help with the issue

[Install]
WantedBy=default.target

This yields the following errors:

Dec 24 14:43:54 mac-mint systemd[1]: Started halinuxcompanion.service - Home Assistant Linux Companion.
Dec 24 14:43:54 mac-mint python[99757]: INFO:halinuxcompanion:Reading configuration file config.json
Dec 24 14:43:54 mac-mint python[99757]: Traceback (most recent call last):
Dec 24 14:43:54 mac-mint python[99757]:   File "<frozen runpy>", line 198, in _run_module_as_main
Dec 24 14:43:54 mac-mint python[99757]:   File "<frozen runpy>", line 88, in _run_code
Dec 24 14:43:54 mac-mint python[99757]:   File "/opt/halinuxcompanion/halinuxcompanion/__main__.py", line 104, in <module>
Dec 24 14:43:54 mac-mint python[99757]:     loop.run_until_complete(main())
Dec 24 14:43:54 mac-mint python[99757]:   File "/usr/lib/python3.12/asyncio/base_events.py", line 687, in run_until_complete
Dec 24 14:43:54 mac-mint python[99757]:     return future.result()
Dec 24 14:43:54 mac-mint python[99757]:            ^^^^^^^^^^^^^^^
Dec 24 14:43:54 mac-mint python[99757]:   File "/opt/halinuxcompanion/halinuxcompanion/__main__.py", line 69, in main
Dec 24 14:43:54 mac-mint python[99757]:     await bus.init()
Dec 24 14:43:54 mac-mint python[99757]:   File "/opt/halinuxcompanion/halinuxcompanion/dbus.py", line 86, in init
Dec 24 14:43:54 mac-mint python[99757]:     self.session = await MessageBus(bus_type=BusType.SESSION).connect()
Dec 24 14:43:54 mac-mint python[99757]:                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 24 14:43:54 mac-mint python[99757]:   File "/opt/halinuxcompanion/.venv/lib/python3.12/site-packages/dbus_next/aio/message_bus.py", line 122, in __init__
Dec 24 14:43:54 mac-mint python[99757]:     super().__init__(bus_address, bus_type, ProxyObject)
Dec 24 14:43:54 mac-mint python[99757]:   File "/opt/halinuxcompanion/.venv/lib/python3.12/site-packages/dbus_next/message_bus.py", line 72, in __init__
Dec 24 14:43:54 mac-mint python[99757]:     get_bus_address(bus_type))
Dec 24 14:43:54 mac-mint python[99757]:     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 24 14:43:54 mac-mint python[99757]:   File "/opt/halinuxcompanion/.venv/lib/python3.12/site-packages/dbus_next/_private/address.py", line 98, in get_bus_address

Trying with the same file but from userland, according to the suggestion at #15, yields this:

Dec 24 15:06:49 mac-mint systemd[1263]: Started halinuxcompanion.service - Home Assistant Linux Companion.
Dec 24 15:06:49 mac-mint (python)[126176]: halinuxcompanion.service: Failed to determine supplementary groups: Operation not permitted
Dec 24 15:06:49 mac-mint systemd[1263]: halinuxcompanion.service: Main process exited, code=exited, status=216/GROUP
Dec 24 15:06:49 mac-mint systemd[1263]: halinuxcompanion.service: Failed with result 'exit-code'.
Dec 24 15:07:19 mac-mint systemd[1263]: halinuxcompanion.service: Scheduled restart job, restart counter is at 4.

Finally, trying to add /opt/halinuxcompanion/.venv/bin/python -m halinuxcompanion -c config.json or python3 -m halinuxcompanion -c config.json to Mint's Startup Applications doesn't yield any error, nor updates HA. I ended up creating a bash script that runs cd /opt/halinuxcompanion/ && .venv/bin/python -m halinuxcompanion -c config.json and added that as a Startup Application, which is quite a workaround, but seems to work for now 👀

Thanks and merry Christmas 🎅

[slovdahl]

I don't think it's possible to run halinuxcompanion as a system-wide systemd service (due to the DBUS usage I believe). So in that regard I'm not sure if the instructions added in #33 are accurate 🤔

How did you try to start halinuxcompanion using systemd as your own user? I found https://unix.stackexchange.com/a/479977/73666 that seems to describe a similar problem. Something like systemctl --user start halinuxcompanion.service without any user specified in the unit file should work.