installing order != dependencies ?

[Andrei Kazarov <Andrei Kazarov cern ch>]

Hello,

I have a problem with installing 2 dependent packages with "rpm -i": it 
seems that the packages are installed on order that I give in the 
command line, and not in the order of dependency. E.g. if PackageA 
requires PackageB and I do

> rpm -i PackageA.rpm PackageB.rpm

then PackageA is installed before PackageB. I need B to be installed 
first, because in PackageA %post stage I need to access some files in 
PackageB.

How can I guarantee the correct order not relying on the order of 
packages in rpm -i?

Thanks
           Andrei