PM2 auto start and python virtual environment not playing together

[Brown19]

Hi, I use Tom Hirschberger’s MMM-Temperature to display temp and humidity from an adafruit sht31d. It has a dependency of the Adafruit CircuitPython Library. I’ve upgrade my pi to Bookworm. Python now runs in a virtual environment. I can activate the virtual environment and get everything to work if I launch MM2 in the virtual environment using npm start. It doesn’t work using PM2 start MagicMirror.
I know you call call python without explicitly activating the environment but I’m not sure what changes need to be made to module.
Maybe create a systemd unit file to run the the library at startup?
Ideally, I want the same functionality back; my MM starts on boot and python works normally.
Has anyone seen this or has a fix?

Thanks!

[sdetweil]

@Brown19 in the script launched by pm2, connect to the virtual environment with the venv command , before launching mm

if you setup MagicMirror from my script, then the bash script used is
~/MagicMirror/installers/mm.sh

[Brown19]

@sdetweil Thanks! That worked. I added a line in mm.sh to connect to the virtual environment before launching mm.

[sdetweil]

@Brown19 from an educational perspective

the command pm2 info MagicMirror
would have shown you what program. or script was being launched

and then, when you open a terminal window, the .profile and .bashrc scripts are run to setup the user environment.
the .bashrc has the venv command in it

when pm2 launches a pgm at startup, it is not using a terminal window, so those script are NOT run
you can also use the source command to load them at any time

so you could have done
source .bashrc
instead of
venv…