Again, this has nothing to do with the virtual environment.
Try the following command
pi@raspberrypi:~
$ systemctl status [email protected]
● [email protected] - Home Assistant for homeassistant
Loaded: loaded (/etc/systemd/system/[email protected]; enabled; vendor preset:
Active: active (running) since Sun 2017-11-19 11:49:40 GMT; 1 weeks 4 days ago
Main PID: 15641 (hass)
CGroup: /system.slice/system-home\x2dassistant.slice/[email protected]
└─15641 /srv/homeassistant/bin/python3 /srv/homeassistant/bin/hass
If you get disabled instead of enabled in the loaded: line then
$ sudo systemctl enable [email protected]
should be ok.
If there is more wrong, you could try researching what is missing from this page