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-;;; guix-emacs.el --- Emacs packages installed with Guix
-
-;; Copyright © 2014, 2015, 2016 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 'cl-lib)
-(unless (require 'guix-profiles nil t)
- (defvar guix-user-profile (expand-file-name "~/.guix-profile")))
-
-(defcustom guix-package-enable-at-startup t
- "If non-nil, activate Emacs packages installed in a user profile.
-Set this variable to nil before requiring `guix-emacs' file to
-avoid loading autoloads of Emacs packages installed in
-`guix-user-profile'."
- :type 'boolean
- :group 'guix)
-
-(defvar guix-emacs-autoloads nil
- "List of the last loaded Emacs autoloads.")
-
-(defvar guix-emacs-autoloads-regexp
- (rx (group (* any) "-autoloads")
- ".el" (zero-or-one "c") string-end)
- "Regexp to match Emacs 'autoloads' file.")
-
-(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 (directory)
- "Return a list of Emacs 'autoloads' files in DIRECTORY.
-The files in the list do not have extensions (.el, .elc)."
- (cl-remove-duplicates
- (delq nil
- (mapcar (lambda (file)
- (when (string-match guix-emacs-autoloads-regexp file)
- (match-string 1 file)))
- (directory-files directory 'full-name nil 'no-sort)))
- :test #'string=))
-
-(defun guix-emacs-subdirs (directory)
- "Return list of DIRECTORY subdirectories."
- (cl-remove-if (lambda (file)
- (or (string-match-p (rx "/." string-end) file)
- (string-match-p (rx "/.." string-end) file)
- (not (file-directory-p file))))
- (directory-files directory 'full-name nil 'no-sort)))
-
-(defun guix-emacs-directories (&optional profile)
- "Return the list of directories under PROFILE that contain Emacs packages.
-This includes both `share/emacs/site-lisp/guix.d/PACKAGE'
-sub-directories and `share/emacs/site-lisp' itself.
-
-If PROFILE is nil, use `guix-user-profile'.
-Return nil, if Emacs packages are not installed in PROFILE."
- (let ((root-dir (guix-emacs-directory (or profile guix-user-profile))))
- (when (file-directory-p root-dir)
- (let* ((pkgs-dir (expand-file-name "guix.d" root-dir))
- (pkgs-dirs (when (file-directory-p pkgs-dir)
- (guix-emacs-subdirs pkgs-dir))))
- (cons root-dir pkgs-dirs)))))
-
-;;;###autoload
-(defun guix-emacs-autoload-packages (&rest profiles)
- "Autoload Emacs packages installed in PROFILES.
-If PROFILES are not specified, use a default user and system
-profiles.
-
-'Autoload' means add directories with Emacs packages to
-`load-path' and load 'autoloads' files matching
-`guix-emacs-autoloads-regexp'."
- (interactive (list (if (fboundp 'guix-profile-prompt)
- (funcall 'guix-profile-prompt)
- guix-user-profile)))
- (let ((profiles (or profiles
- (list "/run/current-system/profile"
- guix-user-profile))))
- (dolist (profile profiles)
- (let ((dirs (guix-emacs-directories profile)))
- (when dirs
- (let* ((autoloads (cl-mapcan #'guix-emacs-find-autoloads
- dirs))
- (new-autoloads (cl-nset-difference autoloads
- guix-emacs-autoloads
- :test #'string=)))
- (dolist (dir dirs)
- (cl-pushnew (directory-file-name dir)
- load-path
- :test #'string=))
- (dolist (file new-autoloads)
- (load file 'noerror))
- (setq guix-emacs-autoloads
- (append new-autoloads guix-emacs-autoloads))))))))
-
-(when guix-package-enable-at-startup
- (guix-emacs-autoload-packages))
-
-(provide 'guix-emacs)
-
-;;; guix-emacs.el ends here