After a fresh install, X-Plane will silently fail to load on Arch Linux and will simply say "Will init world". Running the executable from a terminal will not log anything that causes the sim not to load and the Log.txt does not show anything either.
This is what I needed to install to make X-Plane run:
sudo pacman -S $(pacman -Ssq noto-fonts)
This command installs all packages starting with noto-fonts
. noto-fonts-*
does not work.