pkg upgrade not working properly [was: pkgng messed up]

[Nagy László Zsolt]

> You need to identify every package generating these sort of conflicts,
> and then tell pkg that it should use a different port (identified by
> port origin) for any upgrades using 'pkg set' like so:
>
>      pkg set -o category/old-port:category/new-port
>
> So in the case of replacing postgresql93-client with postgresql90-client
> you run:
>
>     pkg set -o databases/postgresql93-client:databases/postgresql90-client
>
> Now when you run your 'pkg upgrade' it will tell you it is upgrading
> (sic) postgresql93-client to postgresql90-client.

Thank you. It is funny I have already tried this but in the other 
direction e.g.

	pkg set -o databases/postgresql90-client:databases/postgresql93-client

I guess I did that because it was that way with the old portmaster.

This trick helped me with postgresql, but not with perl. Here is the 
problem:

     pkg set -o lang/perl5.16:lang/perl5.12
     pkg upgrade

Then I still get these messages:

pkg: WARNING: locally installed perl-5.12.4_4 conflicts on 
/usr/local/man/man1/xsubpp.1.gz with:
         - perl5-5.16.3_9

Which is silly because the locally installed perl is NOT 5.12 but 5.14:

root at backup:/usr/ports # perl -version

This is perl 5, version 14, subversion 4 (v5.14.4) built for amd64-freebsd

And hey, perl5.12 is not under ports/lang anymore. What can I do with this?

(And still don't understand that if this conflict is an error, then why 
am I getting warnings only?)