I installed KDE last night and the Gentoo Wiki recommended me to install consolekit. Today I read that consolekit is deprecated
"ConsoleKit is currently not actively maintained. The focus has shifted to the built-in seat/user/session management of Software/systemd called systemd-loginctl"
One day our entire computing architecture is going to collapse under the weight of abstrations of abstractions.
that it is "not actively maintained" does not mean that it does not work. I think currnetly there is no need to look for an alternative. KDE works fine with the current version of consolekit.