gnu: emacs: Check GUIX_ENVIRONMENT when autoloading packages.

Check the environment profile so that we autoload packages that are given as
arguments to "guix environment" but are not in the system or user profile.
Note that the union of Emacs packages in the system, user, and environment
profiles will be autoloaded even when --pure was passed to "guix environment",
because it's not clear how to detect that --pure was given.

* gnu/packages/aux-files/emacs/guix-emacs.el (guix-emacs-autoload-packages):
Add Emacs packages from GUIX_ENVIRONMENT profile.

Signed-off-by: Alex Kost <[email protected]>

1 files changed, 6 insertions, 3 deletions

diff --git a/gnu/packages/aux-files/emacs/guix-emacs.el b/gnu/packages/aux-files/emacs/guix-emacs.el
index 2bbd639ffd..9a49e8861c 100644
--- a/gnu/packages/aux-files/emacs/guix-emacs.el
+++ b/gnu/packages/aux-files/emacs/guix-emacs.el
@@ -1,6 +1,7 @@
 ;;; guix-emacs.el --- Emacs packages installed with Guix
 
 ;; Copyright © 2014, 2015, 2016, 2017 Alex Kost <[email protected]>
+;; Copyright © 2017 Kyle Meyer <[email protected]>
 
 ;; This file is part of GNU Guix.
 
@@ -87,9 +88,11 @@ profiles.
   (interactive (list (if (fboundp 'guix-read-package-profile)
                          (funcall 'guix-read-package-profile)
                        guix-user-profile)))
-  (let ((profiles (or profiles
-                      (list "/run/current-system/profile"
-                            guix-user-profile))))
+  (let* ((env      (getenv "GUIX_ENVIRONMENT"))
+         (profiles (or profiles
+                       (append (list "/run/current-system/profile"
+                                     guix-user-profile)
+                               (and env (list env))))))
     (dolist (profile profiles)
       (let ((dirs (guix-emacs-directories profile)))
         (when dirs