[arch-general] Xz, space savings and delta ... my findings

[Nathan Wayde]

On 01/04/10 14:03, Dieter Plaetinck wrote:
> On Thu, 01 Apr 2010 13:54:56 +0100
> Nathan Wayde<kumyco at konnichi.com>  wrote:
>    
>> Comparing with the delta (between the original packages) which 5.3MB
>> it's not a whole lot while allowing more flexibility(IMHO).
>>      
> I don't see the point.  with binary delta's you get smaller packages
> and getting the non-changed files "again" doesn't really cause harm,
> does it?
> In other words: what useful things does this approach allow you to do
> that we cannot do right now?
>    
My use-case is for the downgrade scenario where you have upgraded,
then later you realize there is some problem and you no longer have any 
old packages.

Now, in theory I could simply rebuild the pkg with local files thus 
saving the large download.
But what would be the point if I can simply get the files I need.