@stof I agree that this would make those bundles required but in this case maybe @StanAngeloff's idea of having a way for bundles/packages registering which classes can be added to bootstrap and having a second level bootstrap file that aggregates those files in a more meaningful way would be better.

Composer already supports the ``` extra ``` section which adds ``` symfony-assets-install ``` which is specific to Symfony2 so maybe we could have a ``` symfony-aggregate-classes ``` as well and then have all those classes built in the second stage bootstrap file which is loaded by the first one. Does this make sense?