Virtual package lightdm-greeter is provided by:
dpkg-query: no packages found matching arctica-greeter dpkg-query: no packages found matching lightdm-autologin-greeter dpkg-query: no packages found matching lomiri-greeter ||/ Name Version Architecture +++-===================-==========-==================================== ii lightdm-gtk-greeter 2.0.8-2+b1 amd64 simple display manager (GTK+ greeter) 1 packages