[bug#53818] [PATCH 0/3] Add Repology updater

[Xinglu Chen]

Maxime schrieb am Sonntag der 06. Februar 2022 um 13:41 +01:

> 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.

Good point.

> 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.

That looks like a good idea

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