Comment # 2 on bug 1128589 from Scott Reeves

(In reply to Yifan Jiang from comment #1)
> Hi Frederic, Scott,
> 
> > if we can move away from depending on xdm
> 
> I am a bit losing background of the history of using xdm as gdm's
> dependency, do you have some thoughts on it?

hmm, Actually Federico might be the best person to give some historical insight
into this dependency. Federico ... ?