[Archlinux]pacman 6.0 and pamac-aur compatibility

The issue with pamac will be sorted out eventually. This is what Guillaume Benoit, the developer of pamac, has said himself:

The port to libalpm 13 is not trivial and I don’t have a time ATM to do it. Be patient.

https://gitlab.manjaro.org/applications/pamac/-/issues/1047

In the meantime, if you would like to get your pamac working, you might want to have a look at: