message: Update cross test instructions for aarch64-apple-darwin
diff: @@ -112,15 +112,23 @@ Linux cross tests target i686-unknown-linux-gnu, which requires the ability to
  build and run 32-bit targets. This requires the 32-bit libraries to be
  installed. For example, on Ubuntu, run `sudo apt install gcc-multilib` to
  install the necessary libraries.
  +",
  + );
  + } else if cfg!(all(target_os = "macos", target_arch = "aarch64")) {
  + message.push_str(
  + "
  +macOS on aarch64 cross tests to target x86_64-apple-darwin.
  +This should be natively supported via Xcode, nothing additional besides the
  +rustup target should be needed.
  ",
  );
  } else if cfg!(target_os = "macos") {
  message.push_str(
  "
  -macOS cross tests target x86_64-apple-ios, which requires the iOS SDK to be
  -installed. This should be included with Xcode automatically. If you are using
  -the Xcode command line tools, you'll need to install the full Xcode app (from
  -the Apple App Store), and switch to it with this command:
  +macOS on x86_64 cross tests to target x86_64-apple-ios, which requires the iOS
  +SDK to be installed. This should be included with Xcode automatically. If you
  +are using the Xcode command line tools, you'll need to install the full Xcode
  +app (from the Apple App Store), and switch to it with this command:
  sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer
  