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| | ;;; guix-emacs.el --- Autoload Emacs packages installed with Guix
;; Copyright © 2014, 2015, 2016, 2017 Alex Kost <alezost@gmail.com>
;; Copyright © 2017 Kyle Meyer <kyle@kyleam.com>
;; Copyright © 2019, 2020 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 initialize the Emacs packages
;; installed with Guix.
;;; Code:
(require 'package)
(require 'seq)
(defvar guix-emacs-autoloads-regexp
(rx (* any) "-autoloads.el" (zero-or-one "c") string-end)
"Regexp to match 'autoloads' file.")
(defun guix-emacs-find-autoloads (directory)
"Return a list of 'autoloads' files in DIRECTORY.
The files in the list do not have extensions (.el, .elc)."
;; `directory-files' doesn't honor group in regexp.
(delete-dups (mapcar #'file-name-sans-extension
(directory-files directory 'full-name
guix-emacs-autoloads-regexp))))
(defvar guix-emacs-package-initialize-ran-p nil
"Non-nil if `guix-emacs-package-initialize' has run.")
;;;###autoload
(defun guix-emacs-package-initialize ()
"Initialize the Emacs packages.
Load the autoloads files of the packages, and add their directory
to the Emacs load path if they aren't already."
(interactive)
(let* (;; Filter out core Elisp directories, which have already been
;; autoloaded by Emacs.
(load-path* (seq-filter (lambda (f)
(string-match-p "/share/emacs/site-lisp" f))
load-path))
(autoloads (mapcan #'guix-emacs-find-autoloads load-path*))
(package-directory-list* (mapcar (lambda (f)
(expand-file-name "guix" f))
load-path*))
(user-emacs-directory-warning nil) ;squelch extraneous warnings
(package-user-dir "")) ;do not activate package.el user packages
;; Autoload packages installed without using 'emacs-build-system'; these
;; are found directly under the site-lisp directory (flat hierarchy).
(mapc (lambda (f)
(with-demoted-errors "Error loading autoloads: %s"
(load f nil t)))
autoloads)
;; Set the package-directory-list variable to a meaningful default value
;; on Guix, which for 'package.el' is akin to system packages. It's
;; important that this variable contains the correct value to see the
;; Guix packages listed (as 'external') in M-x package-list.
(setq-default package-directory-list package-directory-list*)
;; Initialize the Guix-installed Emacs packages.
(package-initialize)
(unless guix-emacs-package-initialize-ran-p
;; If this is running the first time, hide the fact that
;; `'package-initialization' has run in order to leave the default
;; behavior of package.el unchanged for its users (that is, to run
;; automatically after the early-init.el file but before the user init
;; file -- this can be useful if they configured their `'package-user-dir'
;; variable).
(setq package--initialized nil)
(setq package--activated nil))
(setq guix-emacs-package-initialize-ran-p t)))
;;;###autoload
(defalias 'guix-package-initialize #'guix-emacs-package-initialize)
;;;###autoload
(define-obsolete-function-alias
'guix-emacs-autoload-packages 'guix-package-initialize "20201218")
;;; The symbol name is suffixed by -emacs to avoid a name clash with
;;; Emacs-Guix's guix.el.
(provide 'guix-emacs)
;;; guix-emacs.el ends here
|