add excellent wallpaper handler

flake.nix

@@ -0,0 +1,18 @@
+{
+  description = "NixOS configuration for my personal setup";
+
+  inputs = { };
+
+  outputs = { self, nixpkgs, ... }:
+    let systems = [ "x86_64-linux" ];
+    in {
+      nixosConfigurations = lib.genAttrs systems (system:
+        let pkgs = nixpkgs.legacyPackages.${system};
+        in nixpkgs.lib.nixosSystem {
+          inherit system;
+          modules = [ ./nixos/configuration.nix ];
+          specialArgs = { inherit pkgs; };
+        });
+    };
+
+}