Documentations about sdk version constraints are outdated

[kdy1]

• https://github.com/dart-lang/json_serializable/blob/9af62981ec190e2e3e4c82195ece440cc15699c4/example/README.md

I switched my flutter channel to dev, but I got

Running "flutter packages get" in chess.dart...
The current Dart SDK version is 2.0.0-dev.63.0.flutter-4c9689c1d2.

Because json_serializable 1.0.0 requires SDK version >=2.0.0-dev.65 <3.0.0 and no versions of json_serializable match >1.0.0 <2.0.0, json_serializable ^1.0.0 is forbidden.
So, because chess depends on json_serializable ^1.0.0, version solving failed.
pub get failed (1)

[adriancmurray]

I'm getting the same thing. The master channel seems to work for this package but using that channel has unexpected issues for my app.

[jaggerwang]

I'm came into the same problem. Why require the newest master channel, it's so unstable! The newest version of dev channel is just 2.0.0-dev.63.0.flutter-4c9689c1d2.

[kevmoo]

Sorry about that. This is blocked on Flutter releasing 0.5.8 which will have a Dart SDK >= -dev.65

[kevmoo]

See the example repo at https://github.com/dart-lang/json_serializable/blob/b6933999a2f73f4b5bd4de7820c63b52847c63dd/example/README.md to see a version that should work with Flutter now...

[MaskyS]

Got this same issue. Disabling flutter_test and using json_serializable: ^0.5.8 works as a hack.

[readytopark]

@MaskyS Can you please share the full pubspec that's working for you?

[hahn]

@readytopark use old stable release

dev_dependencies:
#  flutter_test:
#    sdk: flutter

  build_runner: "^0.8.10"
  json_serializable: "^0.5.8"