Check for MacOS Rosetta compatibility layer in Dart

rosetta.dart

// Function to verify Rosetta compatibility layer is enabled on ARM macOS
void checkRosetta() async {
  var cpu = await getCPUArchitecture();
  var rosettaInstalled = await io.Directory(
          '/Library/Apple/System/Library/LaunchDaemons/com.apple.oahd.plist')
      .exists();
  if (io.Platform.isMacOS && (cpu == 'arm64')) {
    if (rosettaInstalled) {
      print('[ OK ] Rosetta compatibility layer is already installed.');
    } else {
      io.stdout.write(
          '[WARN] Apple Rosetta compatibility layer must be installed. Continue? [Y/N] ');
      var input = io.stdin.readLineSync();
      if (input?.toLowerCase() != 'y') {
        print('[ .. ] Please wait while Rosetta is installed...');
        await io.Process.run('/usr/sbin/softwareupdate',
            ['---install-rosetta', '--agree-to-license']);
      } else {
        io.exit(1);
      }
    }
  }
}