Revamp

lib/default.nix

@@ -1,4 +1,33 @@
-{ lib, ... }:
 {
+  nixpkgs,
+  supportedSystems ? [
+    "x86_64-linux"
+    "aarch64-darwin"
+  ],
+  ...
+}:
+let
+  inherit (nixpkgs.lib) genAttrs;
 
+  forEachSupportedSystem =
+    f:
+    genAttrs supportedSystems (
+      system:
+      f {
+        inherit system;
+        pkgs = pkgsFor system;
+      }
+    );
+
+  pkgsFor =
+    system:
+    import nixpkgs {
+      inherit system;
+      config.allowUnfree = true;
+    };
+
+in
+nixpkgs.lib
+// {
+  inherit forEachSupportedSystem pkgsFor;
 }