Setting up Flutter and Android in macOS using Homebrew

brew install --cask flutter

# Do not install `android-commandlinetools` with Homebrew.
# As of writing, Flutter does not see it. Don't do:
#     brew install --cask android-commandlinetools

# Instead, install Android Studio:
brew install --cask android-studio

Then install Android SDK Command-line Tools from Android Studio’s SDK manager.

flutter doctor
flutter doctor --android-licenses