desktop: added lightdm for budgie

nixosModules/desktop/default.nix

@@ -9,6 +9,7 @@
     ./gnome
     ./greetd
     ./hyprland
+    ./lightdm
     ./plasma
     ./sway
   ];

nixosModules/desktop/lightdm/default.nix

@@ -0,0 +1,49 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}: {
+  options = {
+    alyraffauf.desktop.lightdm.enable =
+      lib.mkEnableOption
+      "Lightdm and slick greeter with Catppuccin theme.";
+  };
+
+  config = lib.mkIf config.alyraffauf.desktop.lightdm.enable {
+    security.pam.services.lightdm.enableKwallet = true;
+    security.pam.services.lightdm.enableGnomeKeyring = true;
+
+    services.xserver.displayManager.lightdm = {
+      enable = true;
+      greeters.slick = {
+        enable = true;
+        theme.name = "Catppuccin-Frappe-Compact-Mauve-Dark";
+        theme.package = pkgs.catppuccin-gtk.override {
+          accents = ["mauve"];
+          size = "compact";
+          variant = "frappe";
+          tweaks = ["normal"];
+        };
+
+        iconTheme.name = "Papirus-Dark";
+        iconTheme.package = pkgs.catppuccin-papirus-folders.override {
+          flavor = "frappe";
+          accent = "mauve";
+        };
+
+        font.name = "NotoSansNerdFont-Regular";
+        font.package = pkgs.nerdfonts.override {fonts = ["Noto"];};
+
+        cursorTheme.package = pkgs.catppuccin-cursors.frappeDark;
+        cursorTheme.name = "Catppuccin-Frappe-Dark-Cursors";
+        cursorTheme.size = 24;
+
+        extraConfig = ''
+          background=#303446
+          enable-hidpi=on
+        '';
+      };
+    };
+  };
+}