Hi, On Sat, 01 Jun 2024 at 15:58, Ludovic Courtès <l...@gnu.org> wrote:
>> I think it would be great if "guix pack -f docker" could avoid building >> all these identical layers again and again. Perhaps it would be >> possible to have a single derivation for each layer? This way we >> wouldn't have to recreate the same layer archives every time. > > That sounds nice in terms of saving CPU time. It’s less nice in terms > of disk usage: a single ‘guix pack -f docker’ run would populate the > store with roughly twice the size of the closure. > > I think each solution (single derivation vs. one derivation per layer) > makes a different tradeoff. I don’t have a strong feeling about which > one is better. I share Ricardo wish. From my perspective, I do not care much about polluting my local Guix store when building Docker images. Because all that will be removed at the next GC – once all the work is loaded elsewhere. However, it appears frustrating to build again and again complete large images when the difference is sometimes just a couple of packages. I would be in favor to share more derivations between images. :-) Cheers, simon
