Merging package configs

merge_package_configs.dart

import 'package:package_resolver/package_resolver.dart';

Future<PackageResolver> mergePackageConfigs(String otherPackageRoot) async {
  final currentConfig = await PackageResolver.current.packageConfigMap;
  final otherConfig =
      (await SyncPackageResolver.loadConfig(otherPackageRoot + '/.packages'))
          .packageConfigMap;
  // We do something horrible here: We simply merge the current config with
  // the other. Hoping it will still work..
  final config = <String, Uri>{};
  config.addAll(currentConfig);
  config.addAll(otherConfig);
  return new PackageResolver.config(config);
}