libreadline 8 made it into [core], although not all packages were rebuilt against it yet.
This breaks several packages, some of them vital for the system.
Before proceeding to update, please check the package database for the updated packages if it mentions a 'not satisfiable dependency: "libreadline.so.7"'.
I'll update this notice when all/most packages have been rebuilt against the new readline package and have been moved to core/extra/community.
Sorry for the trouble,
most packages have been rebuilt and are in core/extra/community. Exceptions: