[bug#31399] [PATCH] import: elpa: Implement recursive import.

[Ludovic Courtès]

Hi Oleg,

Oleg Pykhalov <address@hidden> skribis:

> I stole recursive importer from ‘cran’ and made it for ‘elpa’, the patch
> is attached.  I don't like it and want to share the code with ‘cran’
> importer, but I don't know how to do it without increasing complexity.

Indeed.  Ricardo and I discussed this in the past and Ricardo started
implementing something:

  http://lists.gnu.org/archive/html/guix-devel/2016-08/msg00381.html

It would be great to resume work on this, especially since we have other
importers that would immediately benefit from it (CRAN, Go, Crates).

The solution I proposed back then was to have importers return a SRFI-41
lazy stream of package definitions.

Perhaps there are other ways to achieve this, like simply letting the
top-level importer code check whether a package input is missing and
recurse.

Thoughts?

Thanks,
Ludo’.