[Nix] Attempts to allow unfree packages

flake.nix

@@ -2,7 +2,9 @@
   description = "System Configuration";
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    nixpkgs = {
+      url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    };
     home-manager = {
       url = "github:nix-community/home-manager/master";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -25,7 +27,7 @@
     };
   };
 
-  outputs = { self, nixpkgs, ... }@inputs: {
+  outputs = { self, nixpkgs, ... }@inputs: 
     nixosConfigurations = {
       drew-desktop = (import ./system/hosts/drew-desktop) {
         inherit inputs;