flake.nix: define pkgs in flake

Set the global package set via `hosts/default.nix` passed in from its
definition in `flake.nix`.

flake.nix

@@ -6,18 +6,21 @@
   inputs.nixpkgs.url = "github:nrdxp/nixpkgs/fork";
   inputs.home.url = "github:nrdxp/home-manager/flakes";
 
-  outputs = args@{ self, home, nixpkgs }:
+  outputs = inputs@{ self, home, nixpkgs }:
     let
       inherit (builtins) listToAttrs baseNameOf attrNames readDir;
       inherit (nixpkgs.lib) removeSuffix;
+      system = "x86_64-linux";
 
       pkgs = import nixpkgs {
-        system = "x86_64-linux";
+        inherit system;
         overlays = self.overlays;
+        config = { allowUnfree = true; };
       };
-    in {
-      nixosConfigurations = let configs = import ./hosts args;
 
+    in {
+      nixosConfigurations =
+        let configs = import ./hosts (inputs // { inherit system pkgs; });
         in configs;
 
       overlay = import ./pkgs;

hosts/default.nix

@@ -1,4 +1,4 @@
-args@{ home, nixpkgs, self, ... }:
+inputs@{ home, nixpkgs, self, pkgs, system, ... }:
 let
   inherit (nixpkgs) lib;
 
@@ -10,7 +10,7 @@ let
 
   config = hostName:
     lib.nixosSystem rec {
-      system = "x86_64-linux";
+      inherit system;
 
       specialArgs.usr = { inherit utils; };
 
@@ -29,7 +29,7 @@ let
 
           system.configurationRevision = self.rev;
 
-          nixpkgs.overlays = self.overlays;
+          nixpkgs = { inherit pkgs; };
         };
 
         local = import "${toString ./.}/${hostName}.nix";

profiles/core.nix

@@ -119,8 +119,6 @@ in {
 
   };
 
-  nixpkgs.config.allowUnfree = true;
-
   security = {
 
     hideProcessInformation = true;