From 12f2490aa3b9341e6df9df75bf88d7b2b502376d Mon Sep 17 00:00:00 2001 From: Alex Kost Date: Sun, 30 Nov 2014 23:38:43 +0300 Subject: [PATCH] emacs: Handle autoloading Emacs packages installed with Guix. * emacs/guix-emacs.el: New file. * emacs.am (ELFILES): Add it. * emacs/guix-backend.el (guix-after-repl-operation-hook): Add 'guix-emacs-load-autoloads-maybe'. * emacs/guix-init.el.in: Autoload emacs packages. (guix-package-enable-at-startup): New variable. --- emacs.am | 1 + emacs/guix-backend.el | 4 ++- emacs/guix-emacs.el | 79 +++++++++++++++++++++++++++++++++++++++++++ emacs/guix-init.el.in | 14 ++++++++ 4 files changed, 97 insertions(+), 1 deletion(-) create mode 100644 emacs/guix-emacs.el diff --git a/emacs.am b/emacs.am index d1f4d84243..a43168e2cf 100644 --- a/emacs.am +++ b/emacs.am @@ -21,6 +21,7 @@ AUTOLOADS = emacs/guix-autoloads.el ELFILES = \ emacs/guix-backend.el \ emacs/guix-base.el \ + emacs/guix-emacs.el \ emacs/guix-history.el \ emacs/guix-info.el \ emacs/guix-list.el \ diff --git a/emacs/guix-backend.el b/emacs/guix-backend.el index a320eae35a..73a429b9ee 100644 --- a/emacs/guix-backend.el +++ b/emacs/guix-backend.el @@ -52,6 +52,7 @@ ;;; Code: (require 'geiser-mode) +(require 'guix-emacs) (defvar guix-load-path (file-name-directory (or load-file-name @@ -125,7 +126,8 @@ This REPL is used for receiving information only if "Hook run before executing an operation in Guix REPL.") (defvar guix-after-repl-operation-hook - '(guix-repl-operation-success-message) + '(guix-emacs-load-autoloads-maybe + guix-repl-operation-success-message) "Hook run after executing successful operation in Guix REPL.") (defvar guix-repl-operation-p nil diff --git a/emacs/guix-emacs.el b/emacs/guix-emacs.el new file mode 100644 index 0000000000..512a2e2b1a --- /dev/null +++ b/emacs/guix-emacs.el @@ -0,0 +1,79 @@ +;;; guix-emacs.el --- Emacs packages installed with Guix + +;; Copyright © 2014 Alex Kost + +;; 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 . + +;;; 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 diff --git a/emacs/guix-init.el.in b/emacs/guix-init.el.in index 775c90fef9..4e40d7171a 100644 --- a/emacs/guix-init.el.in +++ b/emacs/guix-init.el.in @@ -1,7 +1,21 @@ (require 'guix-autoloads) +(require 'guix-emacs) (defvar guix-load-path (replace-regexp-in-string "${prefix}" "@prefix@" "@emacsuidir@") "Directory with scheme files for \"guix.el\" package.") +(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-init' file to +avoid loading autoloads of Emacs packages installed in +`guix-user-profile'." + :type 'boolean + :group 'guix) + +(add-to-list 'load-path (guix-emacs-directory)) + +(when guix-package-enable-at-startup + (guix-emacs-load-autoloads 'all)) + (provide 'guix-init)