FriendsOfSymfony/FOSFacebookBundle — comment on commit 0a0ea67fba6cc4f1fd1e05cd5107cdbf6e7f559c
File:  line 0
By stof:

@schmittjoh because the solver needs to know the constraints to be able to solve them. And packages provided by additional repos cannot be registered in the solver before you know which packages should be installed (i.e. after solving the constraints)