getting back to tuigreet

Signed-off-by: Hadi <112569860+anotherhadi@users.noreply.github.com>

hosts/laptop/configuration.nix

@@ -8,7 +8,7 @@
     ../../nixos/home-manager.nix
     ../../nixos/nix.nix
     ../../nixos/systemd-boot.nix
-    ../../nixos/sddm.nix
+    ../../nixos/tuigreet.nix
     ../../nixos/users.nix
     ../../nixos/utils.nix
     ../../nixos/hyprland.nix

nixos/tuigreet.nix

@@ -0,0 +1,60 @@
+{
+  pkgs,
+  config,
+  lib,
+  ...
+}: let
+  c = config.lib.stylix.colors;
+
+  theme = lib.concatStringsSep ";" [
+    "border=#${c.base0D}"
+    "text=#${c.base05}"
+    "prompt=#${c.base0D}"
+    "action=#${c.base0C}"
+    "button=#${c.base0D}"
+    "container=#${c.base00}"
+    "input=#${c.base02}"
+  ];
+
+  tuigreet-launch = pkgs.writeShellScript "tuigreet-launch" ''
+    exec ${pkgs.tuigreet}/bin/tuigreet \
+      --time \
+      --time-format '%H:%M  %A %d %B' \
+      --sessions /run/current-system/sw/share/wayland-sessions \
+      --remember \
+      --remember-user-session \
+      --asterisks \
+      --greeting '  Welcome' \
+      --container-padding 2 \
+      --theme '${theme}' \
+      --power-shutdown 'systemctl poweroff' \
+      --power-reboot 'systemctl reboot'
+  '';
+in {
+  services.greetd = {
+    enable = true;
+    settings = {
+      default_session = {
+        command = "${tuigreet-launch}";
+        user = "greeter";
+      };
+    };
+  };
+
+  # 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.services.greetd.serviceConfig = {
+    Type = "idle";
+    StandardInput = "tty";
+    StandardOutput = "tty";
+    StandardError = "journal"; # Without this errors will spam on screen
+    # Without these bootlogs will spam on screen
+    TTYReset = true;
+    TTYVHangup = true;
+    TTYVTDisallocate = true;
+  };
+
+  environment.systemPackages = [pkgs.tuigreet];
+}