> Even if the core-updates builds have to the lowest priority on the CI,
> and the CI is performing a bit better, I'm not sure building this branch
> is reasonable for now. I feel like we should first focus on providing
> substitutes for the master, guix-modular-master and staging branches
> consistently and on all architectures before trying to build
> core-updates.

Here's a small graph to illustrate the CI throughput improvement: the
CPU idle time on all the CI build nodes for the last 6 months. The build
remote mechanism that has been deployed in early January shows clear
improvements.

Mathieu