Gnome power button behavior when session is locked

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Thanks a lot! It was exactly what I was looking for. I was worried a bit that overriding that adding something to the programs.dconf.profiles.gdm.databases would wipe out previous additions to this list, but it turned out to be OK. For reference, here’s what I added:

    # By default, in GDM's lock screen the power button does nothing. This
    # fixes this behavior to match the behavior of the desktop environment
    # https://wiki.archlinux.org/title/GDM#Configure_power_button_behavior
    programs.dconf.profiles.gdm.databases = [{
      settings."org/gnome/settings-daemon/plugins/power" = {
        power-button-action = "suspend";
      };
    }];