add (host options): add basic host options

options/host/window_managers.nix

@@ -0,0 +1,58 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}:
+let
+  cfg = config.host.window_managers.kde;
+in
+{
+  options = {
+    host.window_managers.kde = {
+      enable = lib.mkOption {
+        type = lib.types.bool;
+        default = false;
+        description = "KDE Clear configurations for host.";
+      };
+      sddm.enable = lib.mkOption {
+        type = lib.types.bool;
+        default = false;
+        description = "SDDM configurations for host.";
+      };
+
+      powerProfiles.enable = lib.mkOption {
+        type = lib.types.bool;
+        default = !config.device.battery.enable;
+        description = "Power Profiles Daemon configurations for host.";
+      };
+    };
+  };
+
+  config = mkIf cfg.enable {
+    services.desktopManager.plasma6.enable = true;
+
+    environment.plasma6.excludePackages = with pkgs.kdePackages; [
+      kate
+      elisa
+      konsole
+      kdepim-runtime
+      plasma-browser-integration
+    ];
+
+    environment.systemPackages = [
+      pkgs.wl-clipboard
+      pkgs.wayland-utils
+    ]
+    ++ lib.optional cfg.sddm.enable [
+      pkgs.kdePackages.sddm-kcm
+    ];
+
+    services.power-profiles-daemon.enable = cfg.powerProfiles.enable;
+
+    services.displayManager.sddm = lib.mkIf cfg.sddm.enable {
+      enable = true;
+      wayland.enable = true;
+    };
+  };
+}