;;; guix-emacs.el --- Emacs packages installed with Guix

;; Copyright © 2014 Alex Kost <alezost@gmail.com>

;; This file is part of GNU Guix.

;; GNU Guix is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; GNU Guix is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with this program.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;; This file provides auxiliary code for working with Emacs packages
;; installed with Guix.

;;; Code:

(require 'guix-profiles)

(defcustom guix-emacs-activate-after-operation t
  "Activate Emacs packages after installing.
If nil, do not load autoloads of the Emacs packages after
they are successfully installed."
  :type 'boolean
  :group 'guix)

(defvar guix-emacs-autoloads nil
  "List of the last loaded Emacs autoloads.")

(defun guix-emacs-directory (&optional profile)
  "Return directory with Emacs packages installed in PROFILE.
If PROFILE is nil, use `guix-user-profile'."
  (expand-file-name "share/emacs/site-lisp"
                    (or profile guix-user-profile)))

(defun guix-emacs-find-autoloads (&optional profile)
  "Return list of autoloads of Emacs packages installed in PROFILE.
If PROFILE is nil, use `guix-user-profile'.
Return nil if there are no emacs packages installed in PROFILE."
  (let ((dir (guix-emacs-directory profile)))
    (if (file-directory-p dir)
        (directory-files dir 'full-name "-autoloads\\.el\\'")
      (message "Directory '%s' does not exist." dir)
      nil)))

;;;###autoload
(defun guix-emacs-load-autoloads (&optional all)
  "Load autoloads for Emacs packages installed in a user profile.
If ALL is nil, activate only those packages that were installed
after the last activation, otherwise activate all Emacs packages
installed in `guix-user-profile'."
  (interactive "P")
  (let* ((autoloads (guix-emacs-find-autoloads))
         (files (if all
                    autoloads
                  (cl-nset-difference autoloads guix-emacs-autoloads
                                      :test #'string=))))
    (dolist (file files)
      (load file 'noerror))
    (setq guix-emacs-autoloads autoloads)))

(defun guix-emacs-load-autoloads-maybe ()
  "Load autoloads for Emacs packages if needed.
See `guix-emacs-activate-after-operation' for details."
  (and guix-emacs-activate-after-operation
       (guix-emacs-load-autoloads)))

(provide 'guix-emacs)

;;; guix-emacs.el ends here
an></td><td><a href='/guix/commit/nix/local.mk?id=c40ad1df60e81e2089780ee884504729c7a66695'>maint: Add 'etc/gnu-store.mount.in' to the distribution.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-09-17 14:10:42 +0200'>2020-09-17</span></td><td><a href='/guix/commit/nix/local.mk?id=cabac732deffafc796537658a6c33c6c4aec821e'>guix-install.sh: Support OpenRC.</a><span class='msg-avail'>...</span></td><td>Morgan Smith</td></tr>
<tr><td><span title='2020-06-27 23:42:20 +0200'>2020-06-27</span></td><td><a href='/guix/commit/nix/local.mk?id=8dc6c387852bb9505be44567a5f56913633cc23a'>daemon: Remove OpenSSL hash compatibility wrappers.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-05-23 15:37:58 +0200'>2020-05-23</span></td><td><a href='/guix/commit/nix/local.mk?id=9927e5b11b88a85fffb959b515430c2312c8dff3'>build: Add a comment above the sysvinit section.</a><span class='msg-avail'>...</span></td><td>Vincent Legoll</td></tr>
<tr><td><span title='2020-05-17 14:12:35 +0200'>2020-05-17</span></td><td><a href='/guix/commit/nix/local.mk?id=ebbf91542269fcb36d64928d4a4992e6afbf2acf'>etc: Install mount unit only if it exists.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-05-16 15:37:41 +0200'>2020-05-16</span></td><td><a href='/guix/commit/nix/local.mk?id=1a1faa78b0498fbb71f1533beb4b65817c1d3f2a'>etc: Add a systemd unit to bind-mount @storedir@ read-only.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-03-11 02:45:33 +0100'>2020-03-11</span></td><td><a href='/guix/commit/nix/local.mk?id=73fbe04107d38f4561636c74d28d7a4935cbb1ef'>Add system start-up files for guix-daemon.</a><span class='msg-avail'>...</span></td><td>Danny Milosavljevic</td></tr>