The packagechooser_dm.conf has greetd as a DM option with
method: netinstall-select, but no matching 'greetd' group existed
in /etc/calamares/modules/netinstall.yaml (which is what Calamares
loads in online mode via modules-search: [local] resolution).
Without the group, selecting greetd silently fails and the
displaymanager module falls back to SDDM instead.
Add greetd + greetd-dinit group alongside the existing SDDM,
LightDM, LXDM, LY groups.
c-ludenberg
8661722ee7