Report version of Flutter

[bruno-garcia]

Came up on: flutter/flutter#61814

The goal is to include the 'runtime' interface with the Dart and/or Flutter version.
If there's still no API for this, perhaps we can get this at compile time

[ueman]

The only way I see to archive this currently is to advise the user to include the pubspec.yaml file as an asset and read the dart and flutter version constraints at runtime from it. Like this This is a Flutter only solution.

We could add compile time code generation but that requires the user to add a sentry dev dependency, execute the code generation and somehow notify Sentry of the generated code (because there's no reflection in Flutter). Code generation would work for pure Dart and Flutter though.

[marandaneto]

also for context flutter/flutter#11481

[bruno-garcia]

We could add compile time code generation but that requires the user to add a sentry dev dependency, execute the code generation and somehow notify Sentry of the generated code (because there's no reflection in Flutter). Code generation would work for pure Dart and Flutter though.

Having some code of ours running at part of the build is required for uploading proguard mapping files for Android and debug files for iOS. On Flutter right now it's not a requirement, unless split-debug-info which I assume can become more widely adopted (since folks want smaller apps at the end of the day).

Given that, it doesn't sound unreasonable for us to have a dart tool of sorts that ppl can add to their Flutter builds. And with this tool we could hook into the build to say: Get the Flutter version and replace it on a placeholder variable in a .dart file before compilation. And also do things such as automate debug file upload.

[marandaneto]

yeah the idea is that we have some code that is run during the build time that can inject some values either as code generation or env. var. that could be read at runtime, I'd be fine either way, this is ideally done along with the automatization of uploading debug files automatically as it'd be pretty much the same plugin.

[kuhnroyal]

If there were some kind of generation, maybe this could also help with #265

[ueman]

Dart issue for exposing more information at runtime: dart-lang/sdk#46347

[marandaneto]

We'd need a plugin that does flutter -version and parse the output during compile time or even before, and later generate code with the metadata to be set at runtime.

[marandaneto]

We already have this btw.