here is an excerpt from another topic:
`Our advice is to uninstall Kalu and perform the pacman and YAy update`
Bryanpwo
Since Kalu isn’t actively maintained anymore we decided two months ago to search for a replacement. @manuel created the update notifier and we planned this to release in the November release.
`Kalu can’t handle the new Pacman that hit the repo today. That’s why we released it earlier.`
So can I just run …
> $ sudo pacman -Rs kalu
then…
> $ sudo pacman -Syu
to perform the update
Here is the link to the aforementioned topic;