On Thu, Mar 6, 2014 at 11:52 AM, Matthew Miller <mat...@fedoraproject.org> wrote:

I think it will eventually be pretty useful for servers, although without a
good layer on top, we would just be, to extend your analogy, forcing
everyone to buy their groceries from a restaurant, and making them build and
run the restaurant if they don't have one already.


I wouldn't say it that way; we already require everyone to assemble the ingredients. This is just making it easier to reliably replicate the meals.

Right now, it's not just any typical American restaurant. It's more like a restuarants with a prix fixe menu, where your soup, salad, appetizer, main dish, dessert, and beverage are all preselected together. Is that fair?


That is fair indeed! It's true that it'll be a lot more interesting when one can install packages on top. For those who haven't read it before:

https://wiki.ubuntu.com/ImageBasedUpgrades
https://wiki.ubuntu.com/ImageBasedUpgrades/ExtraPackageInstallation

are interesting comparison point. What makes OSTree more a lot more flexible than Ubuntu's ImageBasedUpgrades is that we can make a new chroot containing any content we want at any time, transparently sharing storage. This is completely different from trying to layer on top of a read-only base.

The important thing isn't Anaconda. It's that we can do it in Koji. Making this be an ImageFactory plugin makes it easy to add to the upcoming Koji
release which has ImageFactory integration.


Yes, I'm increasingly thinking tree construction should be in Koji indeed. I mean, that is kind of its purpose - take as input some source + build dependencies, perform computation, output more packages or derived data.

It would require teasing apart some things in the current code, but quite doable. I think on my priority list this is after Anaconda and some other things though.


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