}
		seen[modRoot] = true
		modRoots = append(modRoots, modRoot)
	}

	for _, g := range wf.Godebug {
		if err := CheckGodebug("godebug", g.Key, g.Value); err != nil {
			return nil, nil, fmt.Errorf("error loading go.work:\n%s:%d: %w", base.ShortPath(path), g.Syntax.Start.Line, err)
		}
	}

	if !anyFlags {
		base.Fatalf("go: no flags specified (see 'go help work edit').")
	}

	workFile, err := modload.ReadWorkFile(gowork)
	if err != nil {
		base.Fatalf("go: errors parsing %s:\n%s", base.ShortPath(gowork), err)
	}

	if *editGo == "none" {
		workFile.DropGoStmt()
	} else if *editGo != "" {
		if err := workFile.AddGoStmt(*editGo); err != nil {
			base.Fatalf("go: internal error: %v", err)
		}
	}

	}

	data, err := lockedfile.Read(gomod)
	if err != nil {
		base.Fatal(err)
	}

	modFile, err := modfile.Parse(gomod, data, nil)
	if err != nil {
		base.Fatalf("go: errors parsing %s:\n%s", base.ShortPath(gomod), err)
	}

	if *editModule != "" {
		modFile.AddModuleStmt(*editModule)
	}

	if *editGo == "none" {
		modFile.DropGoStmt()
	} else if *editGo != "" {

		// prefixes, the only way to find them is to look.
		// This doesn't always produce a relative path --
		// /foo is shorter than ../../.., for example.
		if reldir := base.ShortPath(dir); reldir != dir {
			out = replacePrefix(out, dir, reldir)
			if filepath.Separator == '\\' {
				// Don't know why, sometimes this comes out with slashes, not backslashes.
				wdir := strings.ReplaceAll(dir, "\\", "/")

				if toolVers == "" || (!strings.HasPrefix(toolchain, "go") && !strings.Contains(toolchain, "-go")) {
					counterErrorsInvalidToolchainInFile.Inc()
					base.Fatalf("invalid toolchain %q in %s", toolchain, base.ShortPath(file))
				}
				if gover.Compare(toolVers, minVers) > 0 {
					gotoolchain = toolchain
					minVers = toolVers
					gover.Startup.AutoToolchain = toolchain
				}
			}

		dirstr := fmt.Sprintf("directory %s", base.ShortPath(absDir))
		if dirstr == "directory ." {
			dirstr = "current directory"
		}
		if inWorkspaceMode() {
			if mr := findModuleRoot(absDir); mr != "" {
				return "", fmt.Errorf("%s is contained in a module that is not one of the workspace modules listed in go.work. You can add the module to the workspace using:\n\tgo work use %s", dirstr, base.ShortPath(mr))
			}

	var pos string
	var isScanErr bool
	if scanErr, ok := err.(scanner.ErrorList); ok && len(scanErr) > 0 {
		isScanErr = true // For stack push/pop below.

		scanPos := scanErr[0].Pos
		scanPos.Filename = base.ShortPath(scanPos.Filename)
		pos = scanPos.String()
		err = errors.New(scanErr[0].Msg)
	}

	// Report the error on the importing package if the problem is with the import declaration

	if r1 == 0 {
		err = errnoErr(e1)
	}
	return
}

func GetShortPathName(longpath *uint16, shortpath *uint16, buflen uint32) (n uint32, err error) {
	r0, _, e1 := syscall.Syscall(procGetShortPathNameW.Addr(), 3, uintptr(unsafe.Pointer(longpath)), uintptr(unsafe.Pointer(shortpath)), uintptr(buflen))
	n = uint32(r0)
	if n == 0 {
		err = errnoErr(e1)
	}
	return
}