[eww] Fixes to eww config.

home-manager/apps/eww/config/eww.yuck

@@ -1,5 +1,4 @@
 (include "./vars.yuck")
-
 (include "./power-button.yuck")
 (include "./primary-statusbar.yuck")
 (include "./secondary-statusbar.yuck")

home-manager/apps/eww/default.nix

@@ -1,11 +1,7 @@
-{ pkgs, ... }:
+{ ... }:
 {
-  home.packages = with pkgs; [
-    eww
-  ];
-
-  home.file.".config/eww" = {
-    source = ./config;
-    recursive = true;
+  programs.eww = {
+    enable = true;
+    configDir = ./config;
   };
 }