[CentOS-devel] anaconda dependency calculation?

Charlie Brady charlieb-centos-devel at budge.apana.org.au
Thu Apr 12 17:09:59 UTC 2007

On Fri, 16 Mar 2007, Nicholas Byrne wrote:

> I'm trying to find a tool that calculates all dependencies for a specific 
> package or group of packages for use with CentOS 5 (beta) with the intention 
> of putting together a custom single CD build of CentOS 5. With CentOS 4 i 
> used a python script that used the hdrlist module to find all dependencies 
> which borrowed code from a number of sources.
> I've looked at yumdownloader and how it checks dependencies (using the 
> --resolve option) but if i pass it the list of packages defined in say the 
> Base and the Core yum groups which generally form an absolute minimal install 
> i end up with about 200 packages. If i do a custom install (using beta 1 
> disks) and deselect everything i end up with over 300 packages.
> So i'm guessing anaconda calculates dependencies in a slightly different way, 
> can anyone point me to files/code where i should be looking to find out?

I've just started looking at yumdownloader to perform that task. I've 
found a --installroot patch for it, so that (hopefully and apparently) it 
will not use the build system's rpmdb and will start with a clean slate. 
It runs to completion, and does *some* dependency resolution, but it's 
clearly deficient. There are *lots* of unsatisfied dependencies in the 
resultant package set.

I think this is an issue to take to the yum-devel list. I'll try bleeding 
edge yum/yum-utils and see if it does a better job.


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