func archiveAndSaveConfig(cfg *config.Wrapper) error {
// To prevent previous config from being cleaned up, quickly touch it too
now := time.Now()
_ = os.Chtimes(cfg.ConfigPath(), now, now) // May return error on Android etc; no worries
archivePath := cfg.ConfigPath() + fmt.Sprintf(".v%d", cfg.Raw().OriginalVersion)
l.Infoln("Archiving a copy of old config file format at:", archivePath)
if err := osutil.Rename(cfg.ConfigPath(), archivePath); err != nil {
return err
}
return cfg.Save()
}