How do I Downgrade a Package with pacman

• Q:I just ran pacman -Syu and package XYZ was upgraded to version N from version M. This package is causing problems on my computer, how can I downgrade from version N to the older version M?
• A: You may be able to downgrade the package trivially by visiting /var/cache/pacman/pkg on your system and seeing if the older version of the package is stored there. (If you have not run pacman -Scc recently, it should be there). If the package is there, you can install that version using pacman -U /var/cache/pacman/pkg/pkgname-olderpkgver.pkg.tar.gz.

This process will remove the current package, will carefully calculate all of the dependency changes, and will install the older version you have chosen with the proper dependencies down the line.