Checking /usr/local/ before upgrading

[Milan]

(Please don't kill me for intervening in this thread. :-) )

Vincenzo Ciancia a écrit :
> I expected anything out of this thread, but people defending the idea
> that keeping /usr/local/lib in the library path during system upgrades
> is a good idea. I can accept to have problems *after* the upgrade, but
> not to be left with an unusable system just because I had stuff in
> /usr/local and that's my fault.
>   
Maybe there's no reason to fight over that, but I think this can be a
good idea. Are there any drawbacks of temporarily removing /usr/lib from
lib path before upgrading? In any case, this can help to make the
process work as expected by the developers.

I had recently such an experience with old GNUnet libs in /usr/local
that blocked it; not a big deal, but disabling them would have allowed
my update to go flawlessly. Many may be frightened by apt inconsistency
errors.