test: this is not working :,(

overlays/default.nix

@@ -1,24 +1,19 @@
-# This file defines overlays
-{ inputs, ... }:
+{ outputs, inputs }:
 {
-  # This one brings our custom packages from the 'pkgs' directory
-  additions = final: _prev: import ../pkgs { pkgs = final; };
-
-  # This one contains whatever you want to overlay
-  # You can change versions, add patches, set compilation flags, anything really.
-  # https://nixos.wiki/wiki/Overlays
-  modifications = final: prev: {
-    # example = prev.example.overrideAttrs (oldAttrs: rec {
-    # ...
-    # });
+  # For every flake input, aliases 'pkgs.inputs.${flake}' to
+  # 'inputs.${flake}.packages.${pkgs.system}' or
+  # 'inputs.${flake}.legacyPackages.${pkgs.system}'
+  flake-inputs = final: _: {
+    inputs = builtins.mapAttrs
+      (_: flake: let
+        legacyPackages = ((flake.legacyPackages or {}).${final.system} or {});
+        packages = ((flake.packages or {}).${final.system} or {});
+      in
+        if legacyPackages != {} then legacyPackages else packages
+      )
+      inputs;
   };
 
-  # When applied, the unstable nixpkgs set (declared in the flake inputs) will
-  # be accessible through 'pkgs.unstable'
-  unstable-packages = final: _prev: {
-    unstable = import inputs.nixpkgs-unstable {
-      system = final.system;
-      config.allowUnfree = true;
-    };
-  };
-}
+  # Adds my custom packages
+  additions = final: prev: import ../pkgs { pkgs = final; };
+}