yay is just a helper. If you don't use a helper the installation is done with pacman -U packagename.pkg.tar.xz.
pacman -U packagename.pkg.tar.xz
Edit: aaah. Got it.
yay is just a helper. If you don't use a helper the installation is done with
pacman -U packagename.pkg.tar.xz
.Edit: aaah. Got it.