On Thu, Jun 22, 2017 at 02:44:11AM -0400, Mark H Weaver wrote:
> Leo Famulari <leo@famulari.name> writes:
> > Hm, I noticed the bootstrap binaries being downloaded, so I don't think
> > this patch applies the graft without causing a full rebuild.
> 
> It's likely that this is because of the new behavior of Hydra, where
> NARs that haven't been fetched in the last 14 days are deleted, and then
> those substitutes will fail the next time they are requested.
> 
> In this system fetching substitutes that are not often requested will
> often fail.  One must try to fetch them, and then wait a while for Hydra
> to rebuild the NARs, and then try again later.  FWIW, I don't like this
> approach, but it's what we have for now.

Okay, I'm trying again. I'll let the build finish and report if the
system seems okay in QEMU.