import/elpa: Fix some GNU-devel imports.

elpa-version->string construct the version (needed later to construct the full
package name to fetch the archive...) from the version numbers given as a list
from archive-contents. This list representation is documented in emacs's
version-to-list and version-regexp-alist docstrings.

In these list, A negative integer specify a non-numeric part of a
version. Different non-numeric may lead to the same negative
integer (e.g. 1.2.CVS, 1.2cvs, 1.2_Cvs, ...).

If there is a negative integer, we need to gather more information because the
list version present in archive-contents is not enough to reconstruct the
archive address.

We parse the ATOM feed at elpa.gnu.org/devel/PACKAGE.xml

Tested on all packages. only loc-changes does not have an ATOM feed.

* guix/import/elpa.scm (elpa-version->string): New repo and name arguments,
use version-from-elpa-devel-feed if needed.
(fetch-elpa-package): Upgrade elpa-version->string call.
(latest-release): Same.
(version-from-elpa-devel-feed): New function.

Change-Id: Ic446d81593d9e6422c20a1ac427438e540e963b0
Signed-off-by: Liliana Marie Prikler <liliana.prikler@gmail.com>

0 files changed, 0 insertions, 0 deletions