public IEnumerable<IPackageInfo> Load(IPackageLog log)
        {
            var fileSystem = new FileSystem();
            var manifestFileSpec = new FileSet { Include = PackageManifest.FILE, DeepSearch = true };
            var manifestReader = new PackageManifestReader(_sourceRoot, fileSystem, folder => folder);

            //how can i 'where' the manifests

            var pis = fileSystem.FileNamesFor(manifestFileSpec, _sourceRoot)
                .Select(Path.GetDirectoryName)
                .Select(manifestReader.LoadFromFolder);

            var filtered = pis.Where(pi=>PackageRole.Module.Equals(pi.Role));

            ConsoleWriter.PrintHorizontalLine();
            ConsoleWriter.Write("Solution Package Loader found:");
            filtered.Each(p=>ConsoleWriter.Write("  {0}", p.Name));
            ConsoleWriter.PrintHorizontalLine();

            return filtered;
        }