On Friday, July 02, 2010 01:51:25 Samuli Suominen wrote:
> I've recently stumbled upon several packages unnecessarily using old
> preserve_old_lib feature from eutils.eclass, namely:
> 
> libgnomekbd
> libproxy
> 
> And then users hit issues like this:
> 
> https://bugs.gentoo.org/show_bug.cgi?id=326517#c5
> 
> Please only use the preserve_old_lib function in case of breaking:
> - or the library is so widely used that revdep-rebuilding the system
> would be nearly impossible without having the old lib around since
> revdep-rebuild (emerge) can't get the emerge ordering right (because of
> overlinking and lack of asneeded by default, namely jpeg and png comes
> into mind)

i dont know how critical libgnomekbd is to the general running of GNOME, but 
if all GNOME apps break because of it, then that is a valid use case.  
upgrading a library that the whole desktop env cascades upon should not result 
in the inability to log in (i.e. being forced to work in a Linux console shell 
to recover things).

that bug report looks to me like the user not reading the output where they 
have to delete the file themselves.
-mike