feat: support new monitor

modules/services/wallpaper.nix

@@ -0,0 +1,26 @@
+{ lib, config, ... }:
+with lib;
+let
+  cfg = config.my.services.wallpaper;
+in
+{
+  options.my.services.wallpaper = {
+    enable = mkEnableOption "wallpaper changer";
+    frequency = mkOption {
+      type = types.str;
+      default = "30m";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    systemd.user.services.wallpaper = {
+      script = "${getExe config.my.programs.wallpaper.package} -r -v";
+      wantedBy = [ "graphical-session.target" ];
+      serviceConfig = {
+        Restart = "always";
+        RuntimeMaxSec = cfg.frequency;
+        ExitType = "cgroup";
+      };
+    };
+  };
+}