Christopher Baines <m...@cbaines.net> skribis:
> Mark H Weaver <m...@netris.org> writes:
[...]
>>> +(define-gexp-compiler (gitolite-rc-file-compiler
>>> + (file <gitolite-rc-file>) system target)
>>> + (match file
>>> + (($ <gitolite-rc-file> umask git-config-keys roles enable)
>>> + (apply text-file* "gitolite.rc"
>>> + `("%RC = (\n"
>>> + " UMASK => " ,(format #f "~4,'0o" umask) ",\n"
[...]
>> --8<---------------cut here---------------start------------->8---
>> 0 (simple-format #f "~4,'0o" 63)
>>
>> ERROR: In procedure simple-format:
>> In procedure simple-format: FORMAT: Unsupported format option ~4 - use
>> (ice-9 format) instead
>> --8<---------------cut here---------------end--------------->8---
[...]
> It sounds to me like adding #:use-modules (ice-9 format) to (gnu
> services version-control) would fix this, but I'll wait until I can
> reproduce the failure before re-adding the service.
Yes, adding #:use-module (ice-9 format) will fix the problem.
You should be able to reproduce it by running “make hydra-jobs”.
As to why you can’t necessarily reproduce it… It turns out that loading
(ice-9 format) has the effect of set!ting the global ‘format’ binding.
So if some unrelated piece of code loads (ice-9 format), you don’t have
any problems; but if that doesn’t happen, you get the error.
This terrible behavior has been in Guile forever and nobody has dared
changing it so far. :-) The -Wformat warning tries hard to diagnose
the issue though.
HTH!
Ludo’.
