{
  lib,
  inputs,
  self,
  root,
  system,
}:
let
  util = import ./util.nix { inherit lib; };

  registry = import ./registry.nix {
    inherit lib;
    hosts = self.nixosConfigurations;
    root = root + "/registry";
  };

  modules = import ./modules.nix {
    inherit util;
    root = root + "/modules";
  };

  guestModules = import ./guests.nix {
    inherit
      inputs
      lib
      registry
      specialArgs
      util
      ;
    repositoryModules = modules;
    root = root + "/guests";
  };

  specialArgs = {
    inherit
      inputs
      self
      util
      ;
    registry = registry.collected;
  };

in
{
  formatter.${system} =
    (import ./formatter.nix {
      inherit inputs system;
    }).config.build.wrapper;

  apps.${system} = import ./apps.nix {
    inherit
      inputs
      lib
      system
      ;
    formatter = self.formatter.${system};
  };

  nixosConfigurations = import ./hosts.nix {
    inherit
      inputs
      lib
      specialArgs
      guestModules
      ;
    registryModule = registry.module;
    repositoryModules = modules;
    root = root + "/hosts";
  };
}