clean up icon/cursor issues, improve greeter

modules/ezpc.nix

@@ -44,7 +44,17 @@ in {
       vt = 1;
       settings = {
         default_session = {
-          command = "${pkgs.greetd.tuigreet}/bin/tuigreet --cmd sway";
+          # command = "${pkgs.greetd.tuigreet}/bin/tuigreet --cmd sway";
+          command = let
+            swayGreeterConfig = pkgs.writeText "sway-greeter-config" ''
+              exec "${pkgs.greetd.gtkgreet}/bin/gtkgreet -l -c sway; swaymsg exit"
+              bindsym Mod4+shift+e exec swaynag \
+                -t warning \
+                -m 'What do you want to do?' \
+                -b 'Poweroff' 'systemctl poweroff' \
+                -b 'Reboot' 'systemctl reboot'
+            '';
+          in "${pkgs.sway}/bin/sway --config ${swayGreeterConfig}";
         };
       };
     };