flutter 0.3.1 (new formula)

[briankung]

• Have you followed the guidelines for contributing?
• Have you checked that there aren't other open pull requests for the same formula update/change?
• Have you built your formula locally with brew install --build-from-source <formula>, where <formula> is the name of the formula you're submitting?
• Does your build pass brew audit --strict <formula> (after doing brew install <formula>)?

---

Regarding the tests:

$ brew audit --strict
Missing libraries:
  /System/Library/Frameworks/MobileCoreServices.framework/MobileCoreServices
  /System/Library/Frameworks/OpenGLES.framework/OpenGLES
  /System/Library/Frameworks/UIKit.framework/UIKit
flutter:
  * Stable version URLs should not contain beta
  * fully scope test system calls e.g. system "#{bin}/flutter"
  * Non-executables were installed to "/usr/local/opt/flutter/bin"
    The offending files are:
      /usr/local/opt/flutter/bin/cache
            /usr/local/opt/flutter/bin/internal
            /usr/local/opt/flutter/bin/flutter.bat
  * flutter has broken dynamic library links:
      
Error: 4 problems in 1 formula

So clearly everything's fine 👍 🙄

However flutter --version works fine, as does flutter create foo. I haven't yet bothered to step through flutter doctor and address all the issues, but I thought I'd stop for a bit and submit a PR to get feedback both here from Homebrew and potentially from the folks at flutter/flutter#14050

Feedback welcome!

[xster]

Thanks for making the PR! This is awesome.

I haven't fully gone through the https://www.rubydoc.info/github/Homebrew/brew/master/Formula docs but off of the top of my head, we should

1. Auto-bundle the iOS dependencies (that we kinda list at https://github.com/flutter/flutter/blob/master/packages/flutter_tools/lib/src/ios/ios_workflow.dart)
2. Since flutter can also self update, we should make sure various combination usages don't break such as updating flutter using flutter and then not downgrading with brew upgrade if the formula isn't updated etc.

[xster]

This is a valid alternative to the double upgrading conflict. We can actually prompt the user back to use brew upgrade if the directory is not writable from the flutter tool. Feel free to file a feature request for us for that handling.

We also want users to be able to modify packages/flutter/lib and modify the framework dart code.

[briankung]

Closing as per Flutter team's preference to implement as a brew tap: flutter/flutter#14050 (comment)