Conflicting dependencies flagged when trying to update gnome with Package Manager: tlp and power-profiles-daemon are in conflict. Installed fresh version 21.12, the most recent available via Manjaro ARM Installer, on RPI4 and had the same dependency conflict when trying to do a Package Manager update after installation.
The work-around is to remove the tlp package before doing the update.
This problem should not exist for a fresh install of the latest stable version, imho, if you are trying to get an audience beyond hobbyists.