post_install() { printf '==> An authentication agent is required\n' printf ' Cinnamon, Deepin, GNOME, GNOME Flashback, KDE, LXDE, LXQt, MATE and Xfce\n' printf ' have an authentication agent already.\n' printf ' See https://wiki.archlinux.org/index.php/Polkit#Authentication_agents\n' printf ' for other desktop environments.\n' }