Edit by @christopherfujino

A design doc for this proposal is at https://flutter.dev/go/flavor-specific-assets

I want to create different flavors of the app and they differ (among other things) on the used assets (icons, backgrounds, fonts, logos, ...)

Currently this seems to require to modify pubspec.yaml before running flutter build
but that is cumbersome.

I'd prefer something like

flutter_assets.yaml # shared assets
flutter_assets_chocolate.yaml # additional assets for chocolate flavor
flutter_assets_strawberry.yaml # additional assets for strawberry flavor

where the shared assets and the assets where the file suffix matches the --flavor xxx value are merged and the result used for flutter build.