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

@maoueh There is no other solution. Custom repositories are used by composer to retrieve the list of available package to create the dependency solver. So you cannot add them from the deps as you don't know the deps at this time (it is the work of the solver to determine them)