fix weather, add unstable-small cause of hyprpaper, update flake, update nas services

overlays/default.nix

@@ -7,4 +7,11 @@
       config.allowUnfree = true;
     };
   };
+
+  nixpkgs-stable = final: _prev: {
+    stable = import inputs.nixpkgs-stable {
+      system = final.system;
+      config.allowUnfree = true;
+    };
+  };
 }