Help installing Snaps on Pinephone running Manjaro ARM w/ Phosh

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I'm trying to install Snaps on my Pinephone running Manjaro ARM w/ Phosh, following the official installation directions for Arch Linux, here: https://snapcraft.io/docs/installing-snap-on-arch-linux

I've hit an impasse, with the message "Pacman is currently in use, please wait." repeating on the terminal screen.

The last command I entered was...

Code:

makepkg -si

Is there a way I can see if Pacman is running in the background and close it?

Thanks in advance.