GNU bug report logs - #53818
[PATCH 0/3] Add Repology updater

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From: Maxime Devos <maximedevos <at> telenet.be>
To: Xinglu Chen <public <at> yoctocell.xyz>, 53818 <at> debbugs.gnu.org
Subject: [bug#53818] [PATCH 0/3] Add Repology updater
Date: Sun, 06 Feb 2022 13:41:29 +0100

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Xinglu Chen schreef op zo 06-02-2022 om 12:50 [+0100]:
> Because of the way ‘%updaters’ in (guix upstream) works, the Repology
> updater is the first or second updater that is used (since it
> technically works on ever package), but because of the limitations I
> mentioned above, the result might not always be the best.  The Repology
> updater is mostly useful for things that don’t already have an updater,
> e.g., ‘maven-dependency-tree’.  Would it make sense to hard-code the
> ‘%updaters’ variable and put the Repology last in the list?

I would prefer not to hardcode %updaters and keep the current
discovery mechanism, such that people can experiment with updaters
outside a git checkout of guix and in channels.

FWIW it would be useful to have the same mechanism for importers.

However, it might be a good idea to do some _postprocessing_ on
the discovered list of updaters, e.g. they could be sorted on
'genericity' with 'stable-sort' (*):

(define (genericity x)
  (cond ((it is "generic-SOMETHING") 1)
        ((it is repology) 2)
        (#true 0)))

(define (less x y)
  (<= (genericity x) (genericity y)))

(*) stable-sort and not sort, to preserve alphabetical ordering
for updaters with the same genericity.

Greetings,
Maxime.

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