Make dart pub global run firehose --validate work with Flutter projects to support autopublishing

[dcharkes]

This expects the pubspec.yaml to use the Dart SDK:

ecosystem/pkgs/firehose/lib/firehose.dart

Lines 157 to 158 in 65817bf

	var code = await runCommand('dart',
	args: ['pub', 'publish', '--dry-run'], cwd: package.directory);

We should consider checking the pubspec.yaml contents to see if a Flutter SDK is required.
Or, just try the dart command and if it fails with an error message that it requires the Flutter SDK, do the flutter command.

Context:

• Configure autopublishing dart-archive/jnigen#380

@HosseinYousefi You could consider submitting a PR here.

@mosuem What is the preferred solution here?

[mosuem]

As I have never published a Flutter package before: You basically want to run flutter pub publish and flutter pub get instead of dart pub publish and dart pub get?

[dcharkes]

As I have never published a Flutter package before: You basically want to run flutter pub publish and flutter pub get instead of dart pub publish and dart pub get?

Correct 👌

The pubspec.yaml contains something along the lines of:

environment:
  sdk: '>=3.1.0-262.3.beta <4.0.0'
  flutter: '>=2.11.0'