Comment installer ia32-libs?

Aujourd’hui, j’ai mis à jour du 13.04 au 13.10. Ensuite, sudo apt-get autoremove supprimé tous les paquets 32 bits.

Comment les récupérer? Comment installer à nouveau ia32-libs?

Voici ce que je reçois si j’essaie de les réinstaller:

 output$ sudo apt-get install ia32-libs Reading package lists... Done Building dependency tree Reading state information... Done Package ia32-libs is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source However the following packages replace it: lib32z1 lib32ncurses5 lib32bz2-1.0 E: Package 'ia32-libs' has no installation candidate