Taijian [1] filed a deletion request for gdm-nox [2]: Starting with 46.2-1 extra/gdm has moved xorg to optdepends. Therefore, this package has become obsolete, as it's whole raison d'être was to be GDM without the xorg stuff.
[1] https://aur.archlinux.org/account/Taijian/ [2] https://aur.archlinux.org/pkgbase/gdm-nox/
