pip install pyyaml
pip install adafruit-circuitpython-dht
sudo apt-get install libgpiod2
pip install paho-mqtt
mosquitto_sub -h hostname -d -t home/hydropinics
pip install flake8
monit: https://spacemanlabs.io/2018/12/07/using-monit-to-monitor-and-restart-a-python-script/