When you do i18n in Flutter you can define a generate:true flag in pubspec.yaml which tells the framework to create and recreate a .dart_tool/flutter_gen/gen_l10n dir with the translations of the project on every hot restart.
Is that extensible? I want to generate .dart_tool/flutter_gen/my_own_shit/latest_modification.dart with, e.g. a variable latestModification with the date of the latest edited file in the project. Is that possible?
Note that although package:build provides functionality like this, up to what I know, you have to run the build through build_runner. The framework does this whenever a generate:true y read instead.
