Flutter installation on M1 Mac Monterey 12.6.2

There's a process -

see https://docs.flutter.dev/get-started/install/macos
- download flutter zip and unzip in ~/code
- add flutter/bin to your .zshrc: export PATH="$PATH:$HOME/code/flutter/bin"
- sudo softwareupdate --install-rosetta --agree-to-license
- run flutter doctor
- Install XCode from the App Store. You will need an Apple ID. https://apps.apple.com/us/app/xcode/id497799835
  - Launch XCode from the Dock and accept the License. Then:
  - sudo xcode-select --switch /Applications/Xcode.app
  - sudo xcodebuild -runFirstLaunch
- Install CocoaPods. See https://guides.cocoapods.org/using/getting-started.html#installation
  - sudo gem install cocoapods
    - flutter REQUIRES the sudo installation (it couldn't find my --user-install)
  - FIX: error installing pod ext/ffi_c
    - Install XCode Command Line Tools VERSION 12 - https://developer.apple.com/download/all/?q=xcode
    - Newer versions than 12 will FAIL - they're missing ruby/config.h
    - sudo xcode-select --switch /Library/Developer/CommandLineTools (make CLI Tools active)
    - We need to make sure VERSION 12 is the only version found:
      - cd /Library/Developer/CommandLineTools/SDKs
      - ls -lF
        
        lrwxr-xr-x 1 root wheel 12 31 Jan 14:49 MacOSX.sdk@ -> MacOSX12.sdk
        
        drwxr-xr-x 7 root wheel 224 31 Jan 14:36 MacOSX12.3.sdk/
        
        lrwxr-xr-x 1 root wheel 14 31 Jan 14:35 MacOSX12.sdk@ -> MacOSX12.3.sdk
      - DELETE ANY OTHER VERSIONS (don't skip this)
        
        Ruby and/or Cocoapods have a magical way of finding the latest version installed, so helpful.
    - You might need to DELETE cached files:
      - rm -rf /Library/Ruby/Gems/2.6.0/gems/ffi-*
      - rm -rf /Library/Ruby/Gems/2.6.0/extensions/universal-darwin-21/2.6.0/ffi-*
    - sudo gem install cocoapods
    - sudo xcode-select --switch /Applications/Xcode.app (switch back to full XCode)
    - flutter doctor
- Install Android Studio from https://developer.android.com/studio/index.html
- FIX missing jre in Android Studio Electric Eel
  - cd /Applications/Android\ Studio.app/Contents
  - ln -s jbr jre they renamed the directory and broke flutter
- make a new dummy project in Android Studio
  - Open SDK Manager, see https://developer.android.com/studio/intro/update#sdk-manager
  - use SDK Manager to download 'Android SDK Command Line Tools' (on the SDK Tools tab)
  - tick the box and Apply
- flutter doctor --android-licenses ... answer yes
- flutter doctor everything should be green!

raffecat/flutter.MD