[bug#50072] [PATCH WIP 4/4] upstream: Support updating git-fetch origins.

[Sarah Morgensen <iskarian@mgsn.dev>]

Hi,

Maxime Devos <maximedevos@telenet.be> writes:

> Sarah Morgensen schreef op ma 06-09-2021 om 18:16 [-0700]:
>> Hi Maxime,
>> 
>> Maxime Devos <maximedevos@telenet.be> writes:
>> 
>> > Sarah Morgensen schreef op zo 15-08-2021 om 16:25 [-0700]:
>> > > * guix/git-download.scm (checkout-to-store): New procedure.
>> > > * guix/upstream.scm (guess-version-transform)
>> > > (package-update/git-fetch): New procedures.
>> > > (%method-updates): Add GIT-FETCH mapping.
>> > 
>> > Does it support packages defined like (a)
>> > 
>> > (define-public gnash
>> >   (let ((commit "583ccbc1275c7701dc4843ec12142ff86bb305b4")
>> >         (revision "0"))
>> >     (package
>> >       (name "gnash")
>> >       (version (git-version "0.8.11" revision commit))
>> >       (source (git-reference
>> >                 (url "https://example.org")
>> >                 (commit commit)))
>> >       [...])))
>> 
>> Thinking about this again, since updaters typically returns actual
>> versions (tags) instead of commits, how much would such a
>> feature be used?
>
> The minetest updater returns version numbers.
> It also returns a git-reference object, which includes the commit.
> Just returning a version number often isn't sufficient,
> because many repositories of minetest mods do not keep version tags.

Thanks for the explanation.

So there is a version number indicated elsewhere than in the tags for
some minetest packages?  (Is this data in the package's git repo or in
e.g. minetest repo metadata?)  That is, the minetest updater always uses
"blessed versions" (not just random commits), such that "revision" will
always be "0"?

Are current minetest packages like this formatted like 'gnash' above?

> See <https://issues.guix.gnu.org/50072#5>.

That's the message I quoted ;)

--
Sarah