m, err := macho.NewFile(sr)
	if err != nil {
		// Not a valid Mach-O file.
		return nil, nil
	}
	return peekMachoPlatform(m)
}

// peekMachoPlatform returns the first LC_VERSION_MIN_* or LC_BUILD_VERSION
// load command found in the Mach-O file, if any.
func peekMachoPlatform(m *macho.File) (*MachoPlatformLoad, error) {
	for _, cmd := range m.Loads {
		raw := cmd.Raw()
		ml := MachoLoad{