set up swaylock and swayidle

home/desktop/hyprland/default.nix

@@ -2,6 +2,8 @@
 {
   imports = [
     ../../common/desktop
+    ./swaylock.nix
+    ./swayidle.nix
   ];
 
   home.packages = with pkgs; [

home/desktop/hyprland/swayidle.nix

@@ -0,0 +1,20 @@
+{ config, ... }: let
+  swaylock = "${config.programs.swaylock.package}/bin/swaylock";
+in {
+  services.swayidle = {
+    enable = true;
+    systemdTarget = "graphical-session.target";
+    events = [
+      {
+        event = "before-sleep";
+        command = "${swaylock} --daemonize";
+      }
+    ];
+    timeouts = [
+      {
+        timeout = 4 * 60;
+        command = "${swaylock} --daemonize --grace 15";
+      }
+    ];
+  };
+}

home/desktop/hyprland/swaylock.nix

@@ -0,0 +1,9 @@
+{ pkgs, ... }: {
+  programs.swaylock = {
+    enable = true;
+    package = pkgs.swaylock-effects;
+    settings = {
+      effect-blur = "20x3";
+    };
+  };
+}