aur/README.md

/etc/pacman.conf

[nyyu]
Server = https://archlinux.nyyu.dev/nyyu

Import key

sudo pacman-key --recv-key 81936FB8BD44A0B8C28CD6B48B9B775C6DAB103E --keyserver hkp://hkps.pool.sks-keyservers.net
sudo pacman-key --lsign-key 81936FB8BD44A0B8C28CD6B48B9B775C6DAB103E