[CentOS-devel] anaconda dependency calculation?

[Jeff Johnson]

On Mar 16, 2007, at 1:39 PM, Nicholas Byrne wrote:

> Thanks Jeff i'll do that, should have thought of that myself  
> really. Out of interest (if you know) is there a "proper" way  
> though (even if it's not released/stable etc)?
>

AFAIK, the replacement is rpm-metadata xml instead of hdlist headers.

hdlist headers are dirt simple compared to the tools necessary to
parse xml.

FYI, rpm-4.4.3 and later has a -H,--hdlist command to query hdlist's

E.g.
	rpm -qa -H
displays all the headers in a hdlist.

There's also a -T to display the order in which rpm would install, as
     rpm -q -HT

Some of that functionality might be useful no matter what rpm you have
chosen to install and use.

73 de Jeff

>
> Jeff Johnson wrote:
>> Easiest solution is likely to just generate a hdlist (using  
>> genhdlist) and do what you did before.
>>
>> There's a copy of genhdlist in rpm sources if you need.
>>
>> 73 de Jeff
>>
>> On Mar 16, 2007, at 1:25 PM, Nicholas Byrne wrote:
>>
>>> Hi all,
>>>
>>> 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?
>>>
>>> Thanks very much in advance for help
>>> Nick
>>>
>>>
>>>
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