Entonces, debido a que Promart depende de Flutter_Test de SDK y congeló ^1.1.1, la resolución de la versión falló. [] Bien: Tipo de excepción: resuelto
What you're experiencing is package version conflicting. You can however
without specifying a version, add any. Dart will resolve the versions that
matches for you.
dev_dependencies:
freezed: any
flutter_test: any
mathiasgodwin