{ lib, username, config, inputs, ... }:
with lib;
{
  imports = [
    inputs.home-manager.nixosModules.home-manager
    (lib.mkAliasOptionModule [ "hm" ] [
      "home-manager"
      "users"
      username
    ])
  ];
  
  options.globals.hm = mkOption { type = types.attrs; };
  config = {
    home-manager = {
      useGlobalPkgs = true;
      useUserPackages = true;
      # backupFileExtension = "hm-backup-" + pkgs.lib.readFile "${pkgs.runCommand "timestamp" {} "echo -n `date '+%Y%m%d%H%M%S'` > $out"}";
      backupFileExtension = "hm-backup-$(date \"+%Y%m%d%H%M%S\")";
      sharedModules = [ config.globals.hm ];
    };
    hm.home = {
      inherit (config.system) stateVersion;
    };
  };
}