diff --git a/flake.nix b/flake.nix
index 11bb698..c3d1660 100644
--- a/flake.nix
+++ b/flake.nix
@@ -7,16 +7,16 @@
   };
 
   outputs = { self, nixpkgs, utils, naersk }:
-    utils.lib.eachDefaultSystem (system:
+    rec {
+      overlay = final: prev: {
+        ha-now-playing = final.callPackage ./.;
+      };
+    } // utils.lib.eachDefaultSystem (system:
       let
         pkgs = import nixpkgs { inherit system; };
         naersk-lib = pkgs.callPackage naersk { };
       in
       rec {
-        overlay = final: prev: {
-          ha-now-playing = final.callPackage ./.;
-        };
-
         packages.ha-now-playing = naersk-lib.buildPackage {
           pname = "ha-now-playing";
           root = ./.;