add greetd with tui greet

Signed-off-by: gwg313 <gwg313@pm.me>

modules/features/desktop/niri.nix

@@ -26,32 +26,34 @@
           imports = [
             ../../nixos/gui/xdg.nix
           ];
-          services.greetd =
-            let
-              niri-config = pkgs.writeText "niri-config" ''
-                hotkey-overlay {
-                    skip-at-startup
-                }
-                environment {
-                    GTK_USE_PORTAL "0"
-                    GDK_DEBUG "no-portals"
-                }
-
-                // other settings
-
-                spawn-at-startup "sh" "-c" "${pkgs.greetd.regreet}/bin/regreet; pkill -f niri"
-              '';
-            in
-            {
+          services.greetd = {
             enable = true;
             settings = {
               default_session = {
-                  command = "niri -c ${niri-config}";
+                command = "${pkgs.greetd.tuigreet}/bin/tuigreet --remember  --asterisks  --container-padding 2 --no-xsession-wrapper --cmd niri-session";
                 user = "greeter";
               };
             };
           };
-          programs.regreet.enable = true;
+
+          # this is a life saver.
+          # literally no documentation about this anywhere.
+          # might be good to write about this...
+          # https://www.reddit.com/r/NixOS/comments/u0cdpi/tuigreet_with_xmonad_how/
+
+          # systemd = {
+          #   # To prevent getting stuck at shutdown
+          #   extraConfig = "DefaultTimeoutStopSec=10s";
+          #   services.greetd.serviceConfig = {
+          #     Type = "idle";
+          #     StandardInput = "tty";
+          #     StandardOutput = "tty";
+          #     StandardError = "journal";
+          #     TTYReset = true;
+          #     TTYVHangup = true;
+          #     TTYVTDisallocate = true;
+          #   };
+          # };
           # services.displayManager.enable = false;
           # services.displayManager = {
           #   sddm = {