refactor(nixos/desktop): move hyprlock config to nixos module

modules/home/desktop/lockscreen/default.nix

@@ -1,47 +0,0 @@
-{
-  osConfig,
-  lib,
-  ...
-}:
-{
-  config = lib.mkMerge [
-    (lib.mkIf (osConfig.desktop.lockscreen == "hyprlock") {
-      home.sessionVariables.LOCKSCREEN = "hyprlock";
-      programs.hyprlock = {
-        enable = true;
-        settings = {
-          general.hide_cursor = true;
-          general.ignore_empty_input = true;
-
-          background = {
-            blur_passes = 5;
-            blur_size = 5;
-          };
-
-          label = {
-            text = ''hi, $USER.'';
-            font_size = 32;
-            halign = "center";
-            valign = "center";
-            position = "0, 0";
-            zindex = 1;
-            shadow_passes = 5;
-            shadow_size = 5;
-          };
-
-          input-field = {
-            fade_on_empty = true;
-            size = "200, 45";
-            halign = "center";
-            valign = "center";
-            position = "0, -5%";
-            placeholder_text = "";
-            zindex = 1;
-            shadow_passes = 5;
-            shadow_size = 5;
-          };
-        };
-      };
-    })
-  ];
-}

modules/home/desktop/lockscreen/hyprlock/default.nix

@@ -0,0 +1,49 @@
+{ osConfig, lib, ... }:
+let
+  inherit (lib) singleton mkIf;
+  cfg = osConfig.desktop.lockscreen.hyprlock;
+in
+{
+  config = mkIf cfg.enable {
+    assertions = singleton {
+      assertion = osConfig.security.pam.services ? hyprlock;
+      message = "You must add hyprlock to osConfig.security.pam.services.";
+    };
+    home.sessionVariables.LOCKSCREEN = "hyprlock";
+    programs.hyprlock = {
+      enable = true;
+      settings = {
+        general.hide_cursor = true;
+        general.ignore_empty_input = true;
+
+        background = {
+          blur_passes = 5;
+          blur_size = 5;
+        };
+
+        label = {
+          text = ''hi, $USER.'';
+          font_size = 32;
+          halign = "center";
+          valign = "center";
+          position = "0, 0";
+          zindex = 1;
+          shadow_passes = 5;
+          shadow_size = 5;
+        };
+
+        input-field = {
+          fade_on_empty = true;
+          size = "200, 45";
+          halign = "center";
+          valign = "center";
+          position = "0, -5%";
+          placeholder_text = "";
+          zindex = 1;
+          shadow_passes = 5;
+          shadow_size = 5;
+        };
+      };
+    };
+  };
+}

modules/nixos/desktop/default.nix

@@ -17,7 +17,6 @@
       refresh-rate = lib.pantheon.mkStrOption;
     };
     windowManager = lib.pantheon.mkStrOption;
-    lockscreen = lib.pantheon.mkStrOption;
     terminal = lib.pantheon.mkStrOption;
     notification-daemon = lib.pantheon.mkStrOption;
     launcher = lib.pantheon.mkStrOption;

modules/nixos/desktop/lockscreen/default.nix

@@ -1,7 +1,15 @@
 { config, lib, ... }:
+let
+  inherit (lib) mkEnableOption mkIf mkMerge;
+  cfg = config.desktop.lockscreen;
+in
 {
-  config = lib.mkMerge [
+  options.desktop.lockscreen = {
-    (lib.mkIf (config.desktop.lockscreen == "hyprlock") {
+    hyprlock.enable = mkEnableOption "";
+  };
+
+  config = mkMerge [
+    (mkIf cfg.hyprlock.enable {
       security.pam.services.hyprlock = { };
     })
   ];

systems/x86_64-linux/desktop.nix

@@ -7,9 +7,9 @@
         "test"
       ];
     };
+    lockscreen.hyprlock.enable = true;
     windowManager = "hyprland";
     terminal = "ghostty";
-    lockscreen = "hyprlock";
     notification-daemon = "mako";
     launcher = "fuzzel";
     status-bar = "waybar";