About a week ago, I ran into some trouble with an update on my Arch Linux (btw) system. I ran a regular pacman -Syu to sync all my packages via, but unfortunately, this update broke my desktop environment, KDE PLasma. It can be quite a hassle to rollback individual packages and I wasn’t have any luck at all. I even found someone with seemingly the same issue. I suspend either there was in fact a breaking change for the newest version of KDE Plasma at the time or my update corrupted some files. Either way, the solutions discussed there weren’t able to fix whatever had broken my installation of KDE plasma.

Anyway, this little misadventure led me to discover that pacman via the Arch Linux Archive allows you to restore all of your packages to the state they would have been on a particular date in the past. Meaning, if you know the date of your last update when your system was functional, you can force pacman to sync with all the packages on that date.

Basically, you set the target Server in your pacman.conf to point to the archive. Like this:

Server = https://archive.archlinux.org/repos/2026/04/30/$repo/os/$arch

That URL points to the package archive as it was on 2026-04-30. Then you run sudo pacman -Syyuu and wait with fingers crossed. Of course please read through the official directions on the wiki to get all the details.

Just be aware, the archive only maintains a few years of package history, but hopefully that will be enough for you to restore your system to a functioning state and figure the rest from there.

Happy hacking!