goVers := gover.GoModLookup(gomod, "go")
		if gover.Compare(goVers, gover.Local()) > 0 {
			return &gover.TooNewError{What: r.ModulePath() + "@" + version, GoVersion: goVers}
		}
	} else if !errors.Is(err, fs.ErrNotExist) {
		return err
	}

	dl, err := r.code.ReadZip(ctx, rev, subdir, codehost.MaxZipFile)
	if err != nil {
		return err
	}

		If module-aware mode is disabled, GOMOD will be the empty string.
	GOTOOLDIR
		The directory where the go tools (compile, cover, doc, etc...) are installed.
	GOVERSION
		The version of the installed Go tree, as reported by runtime.Version.
	`,
}

var HelpFileType = &base.Command{
	UsageLine: "filetype",
	Short:     "file types",
	Long: `