Re: guix weather issue? (was Re: guix package builds, subsitutes and --no-build)

[Giovanni Biscuolo <g@xelera.eu>]

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Hi Chris,

Chris Marusich <cmmarusich@gmail.com> writes:

> Giovanni Biscuolo <g@xelera.eu> writes:
>
>> do you think I should file a bug report or should I wait for more
>> investigation in this list?
>
> Let's confirm the issue by reproducing it, and then open a bug report.

OK, thanks!

> The possible issue here is that berlin reported a substitute was
> available, even though the substitute isn't actually available.
> Right?

AFAIU the issue is "guix weather" reporting on the availability related
to current master and not of user commit: am I wrong?

a little (digression

  anyway even if that is not the issue, users should have some way to
  check if a substitute is available for their current commit, so they
  can decide if they are willing to locally build or not.
    
  also, it would be useful if "guix package -i/-u" allowed users to
  choose to fail (via a flag or a CLI prompt) in case a substitute is
  not available; AFAIU "Substitution failure" [1] works when a
  substitute *is available* but download fails (and we have "--fallback"
  just in case), but there is non way to fail in case substitute in not
  available.
    
  in my specific case with ungoogled-chromium, it took about 8 hours on
  a 8 cores + 16GB RAM machine (although heavily used) to reach 75% of
  the build process... and finally I had to cancel the build since the
  machine load reached 40 (since other "heavy" processes started via
  cronjobs).)

anyway: back to the issue

> If you could provide the following information, I can try to reproduce
> it for you:
>
> - The output of 'guix describe'.
> - The manifest file you used in your 'guix weather' command.

I posted them yesterday in this thread; they are:

.ungoogled-chromium.manifest:

--8<---------------cut here---------------start------------->8---
(specifications->manifest
 '("ungoogled-chromium"))
--8<---------------cut here---------------end--------------->8---

--8<---------------cut here---------------start------------->8---
$ guix describe
Generation 3	Feb 19 2019 19:35:54	(current)
  guix a4fc802
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: a4fc80254a53b46b33f138d1009ddd044b8cb6be
--8<---------------cut here---------------end--------------->8---


yesterday I upgraded guix (guix pull), now I am on:

--8<---------------cut here---------------start------------->8---
Generation 4	feb 25 2019 16:21:26	(current)
  guix cc842b5
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: cc842b58af0a52dc8a01d4a4a30fa2fa0c599190
--8<---------------cut here---------------end--------------->8---

I was able to install ungoogled-chromium substitute:


today that package weather is the same as two days ago:

--8<---------------cut here---------------start------------->8---
$ guix weather --manifest=.ungoogled-chromium.manifest
computing 1 package derivations for x86_64-linux...
looking for 1 store items on https://ci.guix.info...
updating substitutes from 'https://ci.guix.info'... 100.0%
https://ci.guix.info
  100.0% substitutes available (1 out of 1)
  99,3 MiB of nars (compressed)
  288,3 MiB on disk (uncompressed)
  3,952 seconds per request (3,0 seconds in total)
  0,3 requests per second
  'https://ci.guix.info/api/queue?nr=1000' returned 504 ("Gateway Time-out")
--8<---------------cut here---------------end--------------->8---


Thanks!
Giovanni

[1]
https://www.gnu.org/software/guix/manual/en/html_node/Substitution-Failure.html#Substitution-Failure

-- 
Giovanni Biscuolo

Xelera IT Infrastructures

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