Enable German locale on Steam Deck

german_locale_enabler.sh

#!/bin/bash

# This script is enabling (uncommenting) the German locale and regenerates them

sudo steamos-readonly disable
sudo pacman-key --init
sudo pacman-key --populate archlinux
sudo pacman -S glibc
sudo sed -i "s%#de_DE.UTF-8 UTF-8%de_DE.UTF-8 UTF-8%" /etc/locale.gen
sudo locale-gen
sudo steamos-readonly enable
echo "Done! Be sure to put `LANG=de_DE.UTF-8 %command%` in the game's startup options on Steam to enable the locale."

German? japanese? I hope the title can be changed.