{ inputs, config, lib, username, ... }:
let
  cfg = config.os.core.home-manager;
in
{
  imports = [ inputs.home-manager.nixosModules.home-manager ];

  options.os.core.home-manager = {
    enable = lib.mkEnableOption "home Manager configuration";

    users = lib.mkOption {
      default = {};
      description = "Attribute set of users and their home-manager configurations";
      type = lib.types.attrsOf (lib.types.submodule {
        options = {
          path = lib.mkOption {
            type = lib.types.path;
            description = "Path to the user's home.nix file";
          };
        };
      });
    };
  };
  config = lib.mkIf cfg.enable {
    home-manager = {
      extraSpecialArgs = { inherit inputs username; };
      useGlobalPkgs = true;
      useUserPackages = true;
      backupFileExtension = "bak";

      users = lib.mapAttrs (name: userCfg: {
        imports = [ userCfg.path ];
      }) cfg.users;
    };
  };
}