How to tell if package upgrades will require rebooting?

[Loïc Grenié]

2009/4/8 Aart Koelewijn <aart at mtack.xs4all.nl>:
> Apart from the kernel almost everything else can be
> stopped and restarted without a reboot. There maybe some exceptions, but
> I don't know them.

    Unfortunately, kvm, gdm, probably gnome-desktop and kde-desktop
  request a reboot even though they could be restarted: logout,
  ctrl-alt-backspace, login. I suspect some other packages request
  a reboot even though they do not require it.

   In addition as Mihamina Rakotomandimby says, glibc and many
  system-wide libraries are pretty much difficult to "restart".

        Loïc