[PATCH 0/4] Make Emacs find packages in "~/.guix-profile".

[Alex Kost]

So this is a full patchset to "teach" Emacs how to find emacs packages
installed with Guix.  See conversation at
<http://lists.gnu.org/archive/html/guix-devel/2016-01/msg00164.html>.

[PATCH 1/4] emacs: Make "guix-emacs.el" independent.
[PATCH 2/4] emacs: Move loading packages to "guix-emacs.el".
[PATCH 3/4] gnu: emacs: Find packages in "~/.guix-profile".
[PATCH 4/4] doc: Describe how Emacs packages are found.

There is an important nuance: the 3rd patch MUST NOT be committed along
with the first 2 patches, because it will make our Emacs package use an
old source of 'guix' which does not contain the required changes.  So I
think we should:

1. Push the patches 1 and 2.

2. Wait for the next update of the 'guix-devel' snapshot (last time it
   was updated in November¹, so it will probably happen soon).

3. And finally push the patches 3 and 4.

The last patch is not really needed, but I think it would be good to
document how Emacs packages are handled in the Guix land.  WDYT?

¹ 
http://git.savannah.gnu.org/cgit/guix.git/commit/?id=b2a72238b9be3a51b8973dc98db9bd2252a3429e