// If this is the first constant, put it as a new root, as
	// we can't record an existing connection so we don't have
	// a specific DAG to add it to. Notice that we want all
	// constants to be in root #0, so make sure the new root
	// goes there.
	if len(po.constants) == 0 {
		idx := len(po.roots)
		po.roots = append(po.roots, i)
		po.roots[0], po.roots[idx] = po.roots[idx], po.roots[0]
		po.upush(undoNewRoot, i, 0)

Jacek Ewertowski <******@****.***> 1666353045 +0200

Tamas Cservenak <******@****.***> 1706804704 +0100

Tom Tresansky <******@****.***> 1689028866 -0400

Tom Tresansky <******@****.***> 1689028866 -0400

            fileSystemAccess.read(
                root.getAbsolutePath(),
                new PatternSetSnapshottingFilter(patterns, stat)
            )
                .map(roots::add);
        }

        @Override
        public void visitFileTreeBackedByFile(File file, FileTreeInternal fileTree, FileSystemMirroringFileTree sourceTree) {

// The caller must ensure that the root slice is not modified while the Graph
// may be in use.
func NewGraph(cmp func(p, v1, v2 string) int, roots []module.Version) *Graph {
	g := &Graph{
		cmp:      cmp,
		roots:    slices.Clip(roots),
		required: make(map[module.Version][]module.Version),
		isRoot:   make(map[module.Version]bool),
		selected: make(map[string]string),
	}

	for _, m := range roots {
		g.isRoot[m] = true

    }

    private static FileHierarchySet from(File... roots) {
        from(roots as List)
    }

    private static FileHierarchySet from(Iterable<File> roots) {
        def set = FileHierarchySet.empty()
        for (def root : roots) {
            set = set.plus(root)
        }
        return set
    }

			return "", false
		}
		var root string
		var err error
		if repl := Replacement(m); repl.Path != "" && repl.Version == "" {
			root = repl.Path
			if !filepath.IsAbs(root) {
				root = filepath.Join(replaceRelativeTo(), root)
			}
		} else if repl.Path != "" {
			root, err = modfetch.DownloadDir(ctx, repl)
		} else {
			root, err = modfetch.DownloadDir(ctx, m)
		}
		if err != nil {

Tamas Cservenak <******@****.***> 1706804704 +0100