}

	var modFiles []*modfile.File
	var mainModules []module.Version
	var indices []*modFileIndex
	var errs []error
	for _, modroot := range modRoots {
		gomod := modFilePath(modroot)
		var fixed bool
		data, f, err := ReadModFile(gomod, fixVersion(ctx, &fixed))
		if err != nil {
			if inWorkspaceMode() {
				if tooNew, ok := err.(*gover.TooNewError); ok && !strings.HasPrefix(cfg.CmdName, "work ") {

		return
	}

	// As a special case, let "go env GOMOD" and "go env GOWORK" be handled by
	// the local toolchain. Users expect to be able to look up GOMOD and GOWORK
	// since the go.mod and go.work file need to be determined to determine
	// the minimum toolchain. See issue #61455.
	if len(os.Args) == 3 && os.Args[1] == "env" && (os.Args[2] == "GOMOD" || os.Args[2] == "GOWORK") {
		return
	}

	}
	if major < 5 {
		t.Skipf("gccgo too old (%s)", strings.TrimSpace(string(output)))
	}

	gomod, err := exec.Command("go", "env", "GOMOD").Output()
	if err != nil {
		t.Fatalf("go env GOMOD: %v", err)
	}
	if len(bytes.TrimSpace(gomod)) > 0 {
		t.Skipf("gccgo not supported in module mode; see golang.org/issue/30344")
	}
}

	GOHOSTOS
		The operating system (GOOS) of the Go toolchain binaries.
	GOMOD
		The absolute path to the go.mod of the main module.
		If module-aware mode is enabled, but there is no go.mod, GOMOD will be
		os.DevNull ("/dev/null" on Unix-like systems, "NUL" on Windows).
		If module-aware mode is disabled, GOMOD will be the empty string.
	GOTOOLDIR

        Indirect   bool          // module is only indirectly needed by main module
        Dir        string        // directory holding local copy of files, if any
        GoMod      string        // path to go.mod file describing module, if any
        GoVersion  string        // go version used in module
        Retracted  []string      // retraction information, if any (with -retracted or -u)

			}
		}
		tokens = append(tokens, tok.text)
		end = tok.endPos
	}
}

var (
	slashSlash = []byte("//")
	moduleStr  = []byte("module")
)

// ModulePath returns the module path from the gomod file text.
// If it cannot find a module path, it returns an empty string.
// It is tolerant of unrelated problems in the go.mod file.
func ModulePath(mod []byte) string {
	for len(mod) > 0 {
		line := mod

//	GOHOSTOS
//		The operating system (GOOS) of the Go toolchain binaries.
//	GOMOD
//		The absolute path to the go.mod of the main module.
//		If module-aware mode is enabled, but there is no go.mod, GOMOD will be
//		os.DevNull ("/dev/null" on Unix-like systems, "NUL" on Windows).
//		If module-aware mode is disabled, GOMOD will be the empty string.
//	GOTOOLDIR

		return errNoModules
	}

	// Predict whether module aware mode is enabled by checking the value of
	// GO111MODULE and looking for a go.mod file in the source directory or
	// one of its parents. Running 'go env GOMOD' in the source directory would
	// give a canonical answer, but we'd prefer not to execute another command.
	go111Module := os.Getenv("GO111MODULE")
	switch go111Module {
	case "off":
		return errNoModules

		return nil, fmt.Errorf("%s: %w", args[0], err)
	}
	if deprecation != "" {
		fmt.Fprintf(os.Stderr, "go: module %s is deprecated: %s\n", rootMod.Path, modload.ShortMessage(deprecation, ""))
	}
	data, err := modfetch.GoMod(ctx, rootMod.Path, rootMod.Version)
	if err != nil {
		return nil, fmt.Errorf("%s: %w", args[0], err)
	}
	f, err := modfile.Parse("go.mod", data, nil)
	if err != nil {

					good := dir + "/execabs-test"
					if found, err := LookPath(good); err != nil || !strings.HasPrefix(found, good) {
						t.Fatalf(`LookPath(%#q) = %#q, %v, want "%s...", nil`, good, found, err, good)
					}
					if runtime.GOOS == "windows" {
						good = dir + `\execabs-test`
						if found, err := LookPath(good); err != nil || !strings.HasPrefix(found, good) {