mbp

modules/nixos/desktop/plasma/default.nix

@@ -1,30 +1,55 @@
 {
   config,
   lib,
+  pkgs,
   namespace,
   ...
 }:
 let
-  inherit (lib.${namespace}) mkBoolOpt;
+  inherit (lib.${namespace}) mkBoolOpt mkOpt;
   cfg = config.${namespace}.desktop.plasma;
+  wallpaperCfg = config.${namespace}.wallpaper;
 in
 {
   options.${namespace}.desktop.plasma = {
     enable = lib.mkEnableOption "KDE Plasma 6 desktop environment";
 
     wayland.enable = mkBoolOpt true "Use the Wayland session (default) instead of X11";
-  };
 
-  config = lib.mkIf cfg.enable {
-    services = {
-      desktopManager.plasma6.enable = true;
+    wallpaper = {
+      enable = mkBoolOpt false "Enable automatic wallpaper management (Bing/NASA daily download)";
 
-      displayManager.sddm = {
-        enable = true;
-        wayland.enable = cfg.wayland.enable;
-      };
+      source = mkOpt (lib.types.enum [
+        "bing"
+        "nasa"
+      ]) "bing" "Source for the wallpaper (bing or nasa)";
     };
-
-    xdg.portal.extraPortals = [ ];
   };
+
+  config = lib.mkIf cfg.enable (
+    lib.mkMerge [
+      {
+        services = {
+          desktopManager.plasma6.enable = true;
+
+          displayManager.sddm = {
+            enable = true;
+            wayland.enable = cfg.wayland.enable;
+          };
+        };
+
+        xdg.portal.extraPortals = [ ];
+      }
+
+      # Wallpaper management: wire the shared wallpaper module in when requested.
+      # plasma-apply-wallpaperimage hot-reloads the wallpaper in the running session.
+      (lib.mkIf cfg.wallpaper.enable {
+        ${namespace}.wallpaper = {
+          enable = true;
+          source = cfg.wallpaper.source;
+          reloadCommand = "${lib.getExe' pkgs.kdePackages.plasma-workspace "plasma-apply-wallpaperimage"} /run/wallpaper.jpg";
+        };
+      })
+    ]
+  );
 }