[arm-allstar] Argon1 Fan Hat / RPi4

[John Kenney]

I just purchased an Argon1 Fan Hat for my Pi4 not realizing the software is
designed for Raspbian.
https://www.argon40.com/argon-fan-hat-for-raspberry-pi-4-raspberry-pi-3b-and-raspberry-pi-3-b.html

I'd like to use the hat with the Hamvoip - because in addition to a
variable speed fan (based on processor temperature), it also includes a Pi
shutdown button AND the hat was dirt cheap ($10). Before I wade into the
swamp any deeper because of a $10 investment...  what would need to be done
to use this hat on ArchLinux?
Install instructions for Raspbian:  curl
https://download.argon40.com/argon1.sh | bash

I don't want to crash a node (two actually) I've nearly got configured like
I want....
-- 
John