Context

The Flavors feature allows flutter users to have multiple native build configurations that the user can choose between by using the --flavor option in flutter run and flutter build. See Create flavors of a Flutter app to learn more about the feature.

Problem

The feature works (to my knowledge) for Android, iOS, and macOS. However, macOS support is not documented and is not under test¹. This was brought to attention during review of #139045, which will explicitly disable use of --flavor in flutter run for platforms that don't support it.

The question then is, is macOS meant to be supported by the flavors feature? At the time of its introduction, it was a decently popular request (see #64088), which makes me question whether I should make it explicitly unsupported.