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;;; guix-emacs.el --- Emacs packages installed with Guix
;; Copyright © 2014, 2015, 2016, 2017 Alex Kost <alezost@gmail.com>
;; Copyright © 2017 Kyle Meyer <kyle@kyleam.com>
;; Copyright © 2019 Maxim Cournoyer <maxim.cournoyer@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 to autoload Emacs packages
;; installed with Guix.
;;; Code:
(require 'seq)
(defvar guix-emacs-autoloads-regexp
(rx (* any) "-autoloads.el" (zero-or-one "c") string-end)
"Regexp to match Emacs 'autoloads' file.")
(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)."
;; `directory-files' doesn't honor group in regexp.
(mapcar #'file-name-sans-extension
(directory-files directory 'full-name guix-emacs-autoloads-regexp)))
;;;###autoload
(defun guix-emacs-autoload-packages ()
"Autoload Emacs packages found in EMACSLOADPATH.
'Autoload' means to load the 'autoloads' files matching
`guix-emacs-autoloads-regexp'."
;; FIXME: The autoloads generated by the emacs-build-system are not byte
;; compiled.
(interactive)
(let* ((emacs-load-path (getenv "EMACSLOADPATH"))
(emacs-non-core-load-path-directories
;; Filter out core Elisp directories, which are already autoloaded
;; by Emacs.
(seq-filter (lambda (dir)
(string-match-p "/share/emacs/site-lisp" dir))
(split-string emacs-load-path ":")))
(autoloads (mapcan #'guix-emacs-find-autoloads
emacs-non-core-load-path-directories)))
(mapc (lambda (f)
(load f 'noerror))
autoloads)))
(provide 'guix-emacs)
;;; guix-emacs.el ends here
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