Your First Flutter App: An App From Scratch, Episode 4: Install Flutter on macOS | Kodeco, the new raywenderlich.com

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See how to get set up with the Flutter development tools, including the Flutter and Dart SDKs, Xcode, Android Studio, and Visual Studio Code on macOS.

This is a companion discussion topic for the original entry at https://www.kodeco.com/27732840-your-first-flutter-app-an-app-from-scratch/lessons/4
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Hope this helps some future Mac user:
Symptom: As of Nov 2023, Flutter install requires connecting to top-level domain .dev (flutter.dev, dart.dev, pub.dev) ; my mac would absolutely NOT resolve any URLs with that top level domain !! (https requests, curl, wget, pings just hang) - but a diff ubuntu host on local network, no problem.

Cause: at some distant point in the past (2016!), on my Mac, a DNS entry was configured to resolve .dev domains using 127.0.0.1 as nameserver – oops.

Fix: essentially remove file named dev in /etc/resolver ; details in this thread

Enjoy!