Re: anticipating the upstart migration
Gustavo Noronha Silva writes ("Re: anticipating the upstart migration"):
> The alternatives system is quite mature; it suffered from leaving
> dangling alternatives, but that was ages ago...
The alternatives system must not be used for any of the essential
files of an essential package.
This is because there must never be an instant where the system
doesn't have (for example) /sbin/init; if the upgrade were interrupted
at that point the system would be unbootable.