bug#26975: Frequent errors in guix publish on Hydra

[ludo@gnu.org (Ludovic Courtès)]

Hi Mark,

Mark H Weaver <mhw@netris.org> skribis:

> Here's a recent excerpt of the console output from guix publish running
> Hydra.  Is this expected?
>
>       Mark
>
> GET /ggy44sk2w47j0dpbghpb9ipr6kik6vsm.narinfo
> GET /qnpsdhgiabvr89i9vdcmhzkggs79i0pc.narinfo
> GET /zgzvzsbhvyinb3vdsgswkqh2b0ih9x1i.narinfo
> In guix/workers.scm:
>      72:9  2 (_)
>     76:32  1 (_ system-error "stat" "~A: ~S" ("No such file or d?" ?) ?)
> In unknown file:
>            0 (make-stack #t)
> ERROR: In procedure make-stack:
> ERROR: In procedure stat: No such file or directory: "/var/cache/guix/publish/none/zgzvzsbhvyinb3vdsgswkqh2b0ih9x1i-xclip-0.12.tar.gz.nar"

Fixed in ffa5e0a6d2851832b7f0e6f943bc69e69e1bc8b0.

The consequence of this bug is that ‘guix publish --cache’ would always
return 404 for narinfos corresponding to already-compressed files
(files with a name ending in .gz, .xz, etc., such as source tarballs.)

Consequently, clients would download source tarballs from upstream or
from the /file URL rather than as a substitute.  Thus, this should be
almost invisible to users.

So we’ll upgrade ‘guix publish’ on hydra & bayfront, but no need to
rush, I think.

Thanks,
Ludo’.