script for installing packages on Steam Deck using pacman

SD_packages-pacman.sh

#!/bin/bash

# script for installing packages on Steam Deck using
# pacman repositories (not flatpack, snap or appimage)
#
# ATENTION: USE IT AT YOUR OWN RISK!!!!
#
# this will modify root filesystem so it will probably get
# overwrite on system updates but is totally ok executing
# it several times, so if something stops working just
# launch it again
#
# àngel "mussol" bosch - muzzol@gmail.com

# list of packages separated by spaces
PACKAGES="vlc minitube"

echo -n "Checking permissions: "
if [ "$(id -ru)" == "0" ]; then
    echo "OK"
else
    echo "ERROR!"
    echo "this script must be executed by root"
    echo "Ex: sudo $0"
    exit 1
fi

## system related comands
echo "Disabling readonly filesystem"
steamos-readonly disable

if [ ! -e "/etc/pacman.d/gnupg/trustdb.gpg" ]; then
    echo "Initalizing pacman keys"
    pacman-key --init
    pacman-key --populate archlinux
fi

echo "Installing package"
pacman -Sy --noconfirm $PACKAGES

echo "Re-enabling readonly filesystem"
steamos-readonly enable

echo "Done"