Re: "guix pack -f docker" does too much work

[Andy Wingo]

On Sat 01 Jun 2024 15:58, Ludovic Courtès <ludo@gnu.org> writes:

>> 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.

If the concern is CPU time, I would make sure you have switched to zstd
or some other faster codec, via `guix pack -f docker -C zstd`.

You probably already knew but if you haven't tried, it's quite
surprising :)

Andy