Pass flake into module again

There doesn't seem to be a better way at present to get the overlay to the module

flake.nix

@@ -59,19 +59,13 @@
       description = "A basic intake source config";
     };
 
-    nixosModules.default = {
-      options = {};
-      config.nixpkgs.overlays = [ self.overlays.default ];
-    };
-
-    nixosModules.intake = import ./module.nix;
+    nixosModules.default = import ./module.nix self;
 
     nixosConfigurations."demo" = makeOverridable nixosSystem {
       inherit system;
       modules = [
         nixos-shell.nixosModules.nixos-shell
         self.nixosModules.default
-        self.nixosModules.intake
         ./demo
       ];
     };

module.nix

@@ -1,4 +1,4 @@
-{ config, lib, pkgs, ... }:
+flake: { config, lib, pkgs, ... }:
 
 let
   inherit (lib) filterAttrs foldl imap1 mapAttrsToList mkEnableOption mkIf mkMerge mkOption mkPackageOption types;
@@ -68,6 +68,9 @@ in {
     intakeDir = "/etc/intake";
     intakePwd = "${intakeDir}/htpasswd";
   in {
+    # Apply the overlay so intake is included inpkgs.
+    nixpkgs.overlays = [ flake.overlays.default ];
+
     # Define a user group for access to the htpasswd file.
     users.groups.intake.members = mkIf (enabledUsers != {}) (enabledUserNames ++ [ "nginx" ]);