On Monday 22 June 2009 03:09:14 am Allan McRae wrote:

Magnus Therning wrote:

...

Is there something similar to Yum Presto[1] for pacman?

Would it be possible to do, or are there limitations in the package format that prevents it?

/M

[1]: http://fedoraproject.org/wiki/Features/Presto

This is already implemented in the unreleased pacman codebase. Once this gets released we need to figure out how to deal with this from the package distribution side.

Allan

Excellent, Two thoughts. (1) delta rpms are great for download size, but computationally expensive on the client side for reinstalls or multiple machine updates, so (2) if possible, can an option be retained to enable/disable use of deltarpms for folks that would like to have full packages? -- David C. Rankin, J.D.,P.E. Rankin Law Firm, PLLC 510 Ochiltree Street Nacogdoches, Texas 75961 Telephone: (936) 715-9333 Facsimile: (936) 715-9339 www.rankinlawfirm.com

Xavier schrieb am Dienstag 23 Juni 2009 um 09:47:

On Tue, Jun 23, 2009 at 8:50 AM, David C.

Rankin wrote:

...

Excellent,

Two thoughts. (1) delta rpms are great for download size, but computationally expensive on the client side for reinstalls or multiple machine updates, so (2) if possible, can an option be retained to enable/disable use of deltarpms for folks that would like to have full packages?

I don't know about presto, but normally the delta you download allow you to build the final package, which you can keep locally. So reinstalling is not a problem. That's the case with pacman at least. And you can also enable/disable use of deltas.

I guess in the beginning there will be delta packages for the big ones only, like openoffice, to see how it works out. If hassle is involved it should stay this way.

On Tuesday 23 June 2009 08:34:53 am Andrei Thorp wrote:

...

Excellent,

Two thoughts. (1) delta rpms are great for download size, but computationally expensive on the client side for reinstalls or multiple machine updates, so (2) if possible, can an option be retained to enable/disable use of deltarpms for folks that would like to have full packages?

To be a bother, "Arch doesn't use RPMs".

Cheers,

-AT

(smacks self -- I know Andrei!!) I was just responding based on my experience with suse, where in the delta rpm world, the config file finally came with the following caution: ## ## Whether to consider using a .delta.rpm when downloading a package ## ## Valid values: boolean ## Default value: true ## ## Using a delta rpm will decrease the download size for package updates ## since it does not contain all files of the package but only the binary ## diff of changed ones. Recreating the rpm package on the local machine ## is an expensive operation (memory,CPU). If your network connection is ## not too slow, you benefit from disabling .delta.rpm. ## # download.use_deltarpm = true download.use_deltarpm = false I was talking about the same thinking applied to pacman packages ;-) -- David C. Rankin, J.D.,P.E. Rankin Law Firm, PLLC 510 Ochiltree Street Nacogdoches, Texas 75961 Telephone: (936) 715-9333 Facsimile: (936) 715-9339 www.rankinlawfirm.com