;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2014 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 GNU Guix. If not, see <http://www.gnu.org/licenses/>. ;;; Commentary: ;; This is an auxiliary file for the Emacs UI. It is used to add Guix ;; directories to path variables and to load the main code. ;;; Code: (use-modules (ice-9 regex) (srfi srfi-26)) (define %guix-dir) ;; The code is taken from ‘guix’ executable script (define (set-paths!) (define-syntax-rule (push! elt v) (set! v (cons elt v))) (define config-lookup (let ((config '(("prefix" . "@prefix@") ("guilemoduledir" . "@guilemoduledir@"))) (var-ref-regexp (make-regexp "\\$\\{([a-z]+)\\}"))) (define (expand-var-ref match) (lookup (match:substring match 1))) (define (expand str) (regexp-substitute/global #f var-ref-regexp str 'pre expand-var-ref 'post)) (define (lookup name) (expand (assoc-ref config name))) lookup)) (let ((module-dir (config-lookup "guilemoduledir")) (updates-dir (and=> (or (getenv "XDG_CONFIG_HOME") (and=> (getenv "HOME") (cut string-append <> "/.config"))) (cut string-append <> "/guix/latest")))) (push! module-dir %load-path) (push! module-dir %load-compiled-path) (if (and updates-dir (file-exists? updates-dir)) (begin (set! %guix-dir updates-dir) (push! updates-dir %load-path) (push! updates-dir %load-compiled-path)) (set! %guix-dir module-dir)))) (set-paths!) (load-from-path "guix-main")