so much cleanup

hosts/default.nix

@@ -1,4 +1,4 @@
-{ lib, pkgs, ... }:
+{ lib, pkgs, outputs, ... }:
 let
   timezone = "America/Chicago";
 
@@ -72,9 +72,20 @@ in
     optimise.automatic = lib.mkDefault true;
   };
 
-  # Configure nixpkgs
-  # Enable non free
-  nixpkgs.config.allowUnfree = lib.mkForce true;
+  # Nixpkgs configuration
+  nixpkgs = {
+    # add unstable and stable overlays
+    overlays = [
+      outputs.overlays.nixpkgs-unstable
+      outputs.overlays.nixpkgs-stable
+    ];
+    config = {
+      allowUnfree = lib.mkForce true;
+      permittedInsecurePackages = [
+        # ...
+      ];
+    };
+  };
 
   # Hardware configs
   hardware = {