GNU bug report logs - #46441
GNU ELPA feature request: host .lz archives (as well as uncompressed) for current versions

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From: Mauricio Collares <mauricio <at> collares.org>
To: "Basil L. Contovounesios" <contovob <at> tcd.ie>
Cc: 46441 <at> debbugs.gnu.org, Stefan Monnier <monnier <at> iro.umontreal.ca>
Subject: bug#46441: GNU ELPA feature request: host .lz archives (as well as uncompressed) for current versions
Date: Fri, 12 Feb 2021 16:31:37 -0300

Basil L. Contovounesios <contovob <at> tcd.ie> writes:

> Mauricio Collares <mauricio <at> collares.org> writes:
>
>> Thanks for the reply! The particular use case here is to have a
>> reproducible environment via the Nix package manager. Omitting
>> irrelevant details, Nix is a source-based package manager whose
>> "recipes" for building packages typically start by doing the equivalent
>> of "download this file with this sha256 from this URL" (actually, this
>> is typically done by fetching a specific commit from a repository, but
>> in this case I believe tarballs are the only option);
>
> What are the obstacles to fetching from elpa.git here?
> E.g. http://git.savannah.gnu.org/cgit/emacs/elpa.git/?h=externals/auctex

Hi Basil,

If it's possible to do this for any package, then this is a great
alternative! I see there's an elpa-packages file in the ELPA Git repo
pointing to the sources for each package, which is definitely a format
that Nix can work with. A few questions, just to be sure:

1) When does a commit to the package's repo generate a new release on
ELPA? (every commit triggers a release?)

2) Are there "exceptions" to the list in elpa-packages? That is, if a
package's repo is listed nil in elpa-packages, is it guaranteed that a
branch will exist for that package in ELPA's Git repo?

Thanks,
Mauricio

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