"write_wait_fd: unimplemented" error from 'guix substitute'

Seems that the substitute server went down just as i was doing `guix

system reconfigure /path/to/config.scm` which produced a failure thus

proposing to implement a retry attempts to make this process more

reliable in mission critical environment

substitute: updating substitutes from

'https://substitutes.domain.tld'...   0.0%Backtrace:

substitute: In ice-9/boot-9.scm:

substitute:   1752:10 17 (with-exception-handler _ _ #:unwind? _ # _)

substitute: In unknown file:

substitute:           16 (apply-smob/0 #<thunk 7f93f45d22e0>)

substitute: In ice-9/boot-9.scm:

substitute:     724:2 15 (call-with-prompt _ _ #<procedure

default-prompt-handle…>)

substitute: In ice-9/eval.scm:

substitute:     619:8 14 (_ #(#(#<directory (guile-user) 7f93f45d7c80>)))

substitute: In guix/ui.scm:

substitute:    2230:7 13 (run-guix . _)

substitute:   2193:10 12 (run-guix-command _ . _)

substitute: In ice-9/boot-9.scm:

substitute:   1752:10 11 (with-exception-handler _ _ #:unwind? _ # _)

substitute:   1752:10 10 (with-exception-handler _ _ #:unwind? _ # _)

substitute: In guix/scripts/substitute.scm:

substitute:    757:18  9 (_)

substitute:    348:26  8 (process-query #<output: file 4> _ #:cache-urls

_ #:acl _)

substitute: In guix/substitutes.scm:

substitute:    365:27  7 (lookup-narinfos/diverse _ _ #<procedure

7f93f229df40 …> …)

substitute:    322:31  6 (lookup-narinfos

"https://substitutes.domain.tld" _ # _ …)

substitute:    245:26  5 (fetch-narinfos _ _ #:open-connection _ # _)

substitute: In ice-9/boot-9.scm:

substitute:   1685:16  4 (raise-exception _ #:continuable? _)

substitute:   1685:16  3 (raise-exception _ #:continuable? _)

substitute:   1780:13  2 (_ #<&compound-exception components: (#<&error>

#<&orig…>)

substitute:   1685:16  1 (raise-exception _ #:continuable? _)

substitute:   1685:16  0 (raise-exception _ #:continuable? _)

substitute:

substitute: ice-9/boot-9.scm:1685:16: In procedure raise-exception:

substitute: In procedure write_wait_fd: unimplemented

guix system: error:

`/gnu/store/5hzz6px2jp2kx8fnvfg80m6f6al3y190-guix-1.3.0-27.598f728/bin/guix

substitute' died unexpectedly

--

-- Jacob Hrbek #StandWithUkraine

merge 56319 56320

thanks

Am Donnerstag, dem 30.06.2022 um 08:19 +0000 schrieb Jacob Hrbek:

While retrying and potentially falling back to local builds would be

nice improvements to user experience, I seriously hope your mission-

critical software does not assume reliability of anything network-

related. As a matter of fact, Guix already provides the only guarantee

any system can have under this circumstance: that your device won't be

bricked when failing to download something from the internet.

Cheers

merge 56005 56320 56319

thanks

This doesn't look Guix System-specific to me and looks to have the same issue (i.e., something about write_wait_fd) as

https://issues.guix.gnu.org/56005, so merging into 56005.

Also, is the substitute server being down a hypothesis for the error but not actually known to actually have hapend, or something you have noticed the substitute server being down via other methods and believe it to be a plausible hypothesis for the error cause?

In all cases, I believe write_wait_fd: unimplemented to be a bug that needs to be investigated for the root cause and fixed, not something to accumulate work-arounds for and ignore by automatic retries.

Greetings,

Maxime.

severity 56320 important

quit

close 56319

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block 57983 by 56005

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retitle 56320 "write_wait_fd: unimplemented" error from 'guix substitute'

quit

merge 56319 56320

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merge 56320 56319

quit

I get this error pulling from the official Guix servers.