Re: Magit 2 troubleshooting

[Alex Kost]

AFAICT the root of the problems you faced is that by default
"~/.guix-profile/share/emacs/site-lisp/" and
"~/.guix-profile/share/emacs/site-lisp/guix.d/…" directories are added
to 'load-path' before "~/.emacs.d/elpa/…" so the packages installed from
elpa/melpa/… have a priority.  This may lead to the problems you have
with the old "dash" and "magit-svn".

I think to avoid such clashes, we may choose not to use propagated
inputs for emacs packages, and to replace (require 'foo) clauses with
(require 'foo "/gnu/store/…") ones instead.  This is Taylan's idea:
<https://gnunet.org/bot/log/guix/2015-08-10#T722221>

-- 
Alex