How to customize Gnome Display Manager? GDM Tools does not work, Gnome Login Manager does not work, even GDM-tweak does not work to change the GDM configuration. Surely someone has done this?
From user Infinity Q on the ameriDroid #indiedroid-nova Discord channel:
not a clue. I don’t even think it’s possible via any tool, because I made that search a long time ago across many possible solutions. It seems that customization is mainly hardcoded, up to the whims of each distro’s packager. so unless he builds gdm from source, I think he’s out of luck.