How should we deal with flutter and "dart:ui" in generators?

[davidmorgan]

Running the built_value generator on flutter code currently spits out a severe error:

[SEVERE] Instance of 'PartBuilder' on dartsugar|lib/models/module_data.dart: Unable to resolve asset ID for "dart:ui"

It still works, but I wonder if 1) there is potential for things to break down the line, in which case we should make sure this doesn't happen; and 2) there's a way to do it without getting the warning. Any ideas please?

See: google/built_value.dart#282

[jakemac53]

This seems like a bug, it looks like you are hitting this line, which has an assert above it that the scheme != dart, so in checked mode this would throw.

[natebosch]

This could be tricky. The SDK we use while generating the code doesn't have dart:ui so it probably can't resolve any of it. We'll probably have to add the ability to point to a different SDK or something for the Resolver?

[matanlurey]

Yeah, we'll need a way to use Flutter's Dart SDK, not the same as which dart.

I'm making this M1 because it doesn't prevent the initial MVP for the web.

[davidmorgan]

Thanks. Yes, I don't think this is blocking right now.

[matanlurey]

I thought about this a bit, this is tricky, because the Flutter Dart tool SDK isn't the same as the Flutter Dart engine SDK; we need the second one if you want to be able to resolve dart:ui.