[sabayon] Running sabayon-apply at login

[Mark McLoughlin <markmc redhat com>]

Hey,
	So, I think these are our options

  1) Install a script which runs sabayon-apply as 
     /etc/X11/gdm/Postsession/:0

     Problem here is that it will only run when DISPLAY is :0 and we're 
     assuming that GDM won't start installing something there in the 
     future.

  2) Document that you need to add /usr/sbin/sabayon-apply 
     to /etc/X11/gdm/Postsession/Default in order for profiles to get 
     applied.

     Problem here is that it sucks. On the plus side, if sabayon was 
     actually added to a distro, you'd just add it to the script in the 
     GDM package. It also highlights the need for a hook like this, so 
     at some point we might actually add the hook we need to GDM.

  3) Add a PAM module which would run sabayon-apply.

     Down side is that you still need to make a configuration change - 
     i.e. add

       session option pam_sabayon.so

     to which services in /etc/pam.d you want. Another down side is I 
     suspect people might shout at us and call us crackheads for 
     executing things from PAM modules (but pam_xauth does run xauth 
     so...)


	I think we should just go with (2) for now and look into adding a hook
to the default GDM scripts for us. Although I'm not totally convinced
yet that (3) is a terrible idea.

Cheers,
Mark.