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1 | ;;; guix-emacs.el --- Emacs packages installed with Guix |
2 | ||
e4e21546 | 3 | ;; Copyright © 2014, 2015, 2016 Alex Kost <alezost@gmail.com> |
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4 | |
5 | ;; This file is part of GNU Guix. | |
6 | ||
7 | ;; GNU Guix is free software; you can redistribute it and/or modify | |
8 | ;; it under the terms of the GNU General Public License as published by | |
9 | ;; the Free Software Foundation, either version 3 of the License, or | |
10 | ;; (at your option) any later version. | |
11 | ||
12 | ;; GNU Guix is distributed in the hope that it will be useful, | |
13 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | ;; GNU General Public License for more details. | |
16 | ||
17 | ;; You should have received a copy of the GNU General Public License | |
18 | ;; along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 | ||
20 | ;;; Commentary: | |
21 | ||
22 | ;; This file provides auxiliary code for working with Emacs packages | |
23 | ;; installed with Guix. | |
24 | ||
25 | ;;; Code: | |
26 | ||
6078594b | 27 | (require 'cl-lib) |
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28 | (unless (require 'guix-profiles nil t) |
29 | (defvar guix-user-profile (expand-file-name "~/.guix-profile"))) | |
12f2490a | 30 | |
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31 | (defcustom guix-package-enable-at-startup t |
32 | "If non-nil, activate Emacs packages installed in a user profile. | |
33 | Set this variable to nil before requiring `guix-emacs' file to | |
34 | avoid loading autoloads of Emacs packages installed in | |
35 | `guix-user-profile'." | |
36 | :type 'boolean | |
37 | :group 'guix) | |
38 | ||
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39 | (defvar guix-emacs-autoloads nil |
40 | "List of the last loaded Emacs autoloads.") | |
41 | ||
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42 | (defvar guix-emacs-autoloads-regexp |
43 | (rx (group (* any) "-autoloads") | |
44 | ".el" (zero-or-one "c") string-end) | |
45 | "Regexp to match Emacs 'autoloads' file.") | |
46 | ||
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47 | (defun guix-emacs-directory (&optional profile) |
48 | "Return directory with Emacs packages installed in PROFILE. | |
49 | If PROFILE is nil, use `guix-user-profile'." | |
50 | (expand-file-name "share/emacs/site-lisp" | |
51 | (or profile guix-user-profile))) | |
52 | ||
abea77e3 | 53 | (defun guix-emacs-find-autoloads (directory) |
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54 | "Return a list of Emacs 'autoloads' files in DIRECTORY. |
55 | The files in the list do not have extensions (.el, .elc)." | |
56 | (cl-remove-duplicates | |
57 | (delq nil | |
58 | (mapcar (lambda (file) | |
59 | (when (string-match guix-emacs-autoloads-regexp file) | |
60 | (match-string 1 file))) | |
61 | (directory-files directory 'full-name nil 'no-sort))) | |
62 | :test #'string=)) | |
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63 | |
64 | (defun guix-emacs-subdirs (directory) | |
65 | "Return list of DIRECTORY subdirectories." | |
66 | (cl-remove-if (lambda (file) | |
67 | (or (string-match-p (rx "/." string-end) file) | |
68 | (string-match-p (rx "/.." string-end) file) | |
69 | (not (file-directory-p file)))) | |
70 | (directory-files directory 'full-name nil 'no-sort))) | |
71 | ||
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72 | (defun guix-emacs-directories (&optional profile) |
73 | "Return the list of directories under PROFILE that contain Emacs packages. | |
74 | This includes both `share/emacs/site-lisp/guix.d/PACKAGE' | |
75 | sub-directories and `share/emacs/site-lisp' itself. | |
76 | ||
12f2490a | 77 | If PROFILE is nil, use `guix-user-profile'. |
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78 | Return nil, if Emacs packages are not installed in PROFILE." |
79 | (let ((root-dir (guix-emacs-directory (or profile guix-user-profile)))) | |
80 | (when (file-directory-p root-dir) | |
81 | (let* ((pkgs-dir (expand-file-name "guix.d" root-dir)) | |
82 | (pkgs-dirs (when (file-directory-p pkgs-dir) | |
83 | (guix-emacs-subdirs pkgs-dir)))) | |
84 | (cons root-dir pkgs-dirs))))) | |
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85 | |
86 | ;;;###autoload | |
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87 | (defun guix-emacs-autoload-packages (&rest profiles) |
88 | "Autoload Emacs packages installed in PROFILES. | |
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89 | If PROFILES are not specified, use a default user and system |
90 | profiles. | |
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91 | |
92 | 'Autoload' means add directories with Emacs packages to | |
93 | `load-path' and load 'autoloads' files matching | |
94 | `guix-emacs-autoloads-regexp'." | |
e4e21546 AK |
95 | (interactive (list (if (fboundp 'guix-profile-prompt) |
96 | (funcall 'guix-profile-prompt) | |
97 | guix-user-profile))) | |
abea77e3 | 98 | (let ((profiles (or profiles |
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99 | (list "/run/current-system/profile" |
100 | guix-user-profile)))) | |
abea77e3 AK |
101 | (dolist (profile profiles) |
102 | (let ((dirs (guix-emacs-directories profile))) | |
103 | (when dirs | |
104 | (let* ((autoloads (cl-mapcan #'guix-emacs-find-autoloads | |
105 | dirs)) | |
106 | (new-autoloads (cl-nset-difference autoloads | |
107 | guix-emacs-autoloads | |
108 | :test #'string=))) | |
109 | (dolist (dir dirs) | |
110 | (cl-pushnew (directory-file-name dir) | |
111 | load-path | |
112 | :test #'string=)) | |
113 | (dolist (file new-autoloads) | |
114 | (load file 'noerror)) | |
115 | (setq guix-emacs-autoloads | |
116 | (append new-autoloads guix-emacs-autoloads)))))))) | |
12f2490a | 117 | |
6d268e52 | 118 | (when guix-package-enable-at-startup |
abea77e3 | 119 | (guix-emacs-autoload-packages)) |
6d268e52 | 120 | |
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121 | (provide 'guix-emacs) |
122 | ||
123 | ;;; guix-emacs.el ends here |