nas overlay

hosts/nas/configuration.nix

@@ -2,7 +2,7 @@
 # your system. Help is available in the configuration.nix(5) man page, on
 # https://search.nixos.org/options and in the NixOS manual (`nixos-help`).
 
-{ config, lib, pkgs, ... }:
+{ inputs, outputs, config, lib, pkgs, ... }:
 let
   user = "admin";
   password =
@@ -331,6 +331,7 @@ in {
       cockpit
       packagekit
       gnome.gnome-packagekit
+      unstable.nix-inspect
     ];
   };
 
@@ -370,6 +371,10 @@ in {
 
   # Configure nixpkgs
   nixpkgs = {
+    overlays = [
+      outputs.overlays.nixpkgs-unstable
+    ];
+
     config = {
       # Enable non free
       allowUnfree = true;