flutter_test from sdk is incompatible with json_serializable >=0.5.3.

[wooldridgetm]

After updating my pubspec.yaml with my dependencies (denoted below), the flutter tool is giving me this error when I try flutter packages get

Because every version of flutter_test from sdk depends on test 0.12.37 which depends on analyzer >=0.26.4 <0.32.0, every version of flutter_test from sdk requires analyzer >=0.26.4 <0.32.0.
And because json_serializable >=0.5.3 depends on analyzer ^0.32.0, flutter_test from sdk is incompatible with json_serializable >=0.5.3.
So, because jam2018 depends on both json_serializable ^0.5.4 and flutter_test any from sdk, version solving failed.
pub get failed (1)

is there any way around this issue?

[kevmoo]

Which version of Flutter are you on? Did you upgrade to the latest beta (today)?

[wooldridgetm]

Yes, I'm pretty sure I checked my latest version of Flutter was up-to-date, but to be sure, I checked again. Flutter Doctor reported no issues, but I get a slightly different error this time in the console after running flutter packages upgrade.

Flutter Version info

Flutter 0.5.1 • channel beta • https://github.com/flutter/flutter.git
Framework • revision c7ea3ca377 (3 weeks ago) • 2018-05-29 21:07:33 +0200
Engine • revision 1ed25ca7b7
Tools • Dart 2.0.0-dev.58.0.flutter-f981f09760

[wooldridgetm]

Error Message from 'flutter packages upgrade'

Because every version of flutter_test from sdk depends on analyzer 0.31.2-alpha.2 and json_serializable >=0.5.3 depends on analyzer ^0.32.0, flutter_test from sdk is incompatible with json_serializable >=0.5.3.

So, because jam2018 depends on both json_serializable ^0.5.4 and flutter_test any from sdk, version solving failed.

pub get failed (1)

[kevmoo]

Yup. flutter_test needs to be updated to support the latest analyzer. I'd file a bug on the flutter repo...reference this issue...

[wooldridgetm]

will do. thanks!

[pcqpcq]

just a workaround for me:

remove flutter_test, and use build_runner: "^0.8.10" for now.

and wait for flutter_test to be updated to support the latest analyzer.

dev_dependencies:
  # flutter_test:   # <-- remove this for now.
  #   sdk: flutter
  
  build_runner: "^0.8.10"  # <-- use this for now.
  json_serializable: "^0.5.8"

[kevmoo]

The suggestion from @pcqpcq is a good one.

[RomanSoviak]

Downgrade version of JSON_serializable