You might know this, but unfortunately, if you leave an Arch install unused for enough time, and then run an update, you might not be able to boot into a working desktop.
[EDIT]
Oh, and I had a lot of problems installing Kalpa (from the submission) - all which I got fixed by using ChatGPT.
I left an Arch install sitting for a few months and came back and had trouble getting the updates to properly install. Seems the advice around it is basically just don't go that long without updating.
Eh I misspoke, I don't think you can actually brick anything with this, its just it might not boot properly, you can still format over it, or fix it if you run a LIVE Linux disk to rollback. You also always have an option to run previous system configuration.
The more I think about it, I don't even use Pacman, I just use the other tool that comes with Endeavuor, which is a face to Pacman and probably shields me from doing doofus things. Pacman is easy to screw up an update with.
[EDIT]
Oh, and I had a lot of problems installing Kalpa (from the submission) - all which I got fixed by using ChatGPT.