scripts/guix.in

   1 #!@GUILE@ --no-auto-compile
   2 -*- scheme -*-
   3 !#
   4 ;;; GNU Guix --- Functional package management for GNU
   5 ;;; Copyright © 2013 Mark H Weaver <mhw@netris.org>
   6 ;;;
   7 ;;; This file is part of GNU Guix.
   8 ;;;
   9 ;;; GNU Guix is free software; you can redistribute it and/or modify it
  10 ;;; under the terms of the GNU General Public License as published by
  11 ;;; the Free Software Foundation; either version 3 of the License, or (at
  12 ;;; your option) any later version.
  13 ;;;
  14 ;;; GNU Guix is distributed in the hope that it will be useful, but
  15 ;;; WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ;;; GNU General Public License for more details.
  18 ;;;
  19 ;;; You should have received a copy of the GNU General Public License
  20 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
  21
  22 ;; IMPORTANT: We must avoid loading any modules from Guix here,
  23 ;; because we need to adjust the guile load paths first.
  24 ;; It's okay to import modules from core Guile though.
  25 (use-modules (ice-9 regex)
  26              (srfi srfi-26))
  27
  28 (let ()
  29   (define-syntax-rule (push! elt v) (set! v (cons elt v)))
  30
  31   (define config-lookup
  32     (let ((config '(("prefix"         . "@prefix@")
  33                     ("datarootdir"    . "@datarootdir@")
  34                     ("guilemoduledir" . "@guilemoduledir@")
  35                     ("localedir"      . "@localedir@")))
  36           (var-ref-regexp (make-regexp "\\$\\{([a-z]+)\\}")))
  37       (define (expand-var-ref match)
  38         (lookup (match:substring match 1)))
  39       (define (expand str)
  40         (regexp-substitute/global #f var-ref-regexp str
  41                                   'pre expand-var-ref 'post))
  42       (define (lookup name)
  43         (expand (assoc-ref config name)))
  44       lookup))
  45
  46   (define (maybe-augment-load-paths!)
  47     (unless (getenv "GUIX_UNINSTALLED")
  48       (let ((module-dir (config-lookup "guilemoduledir")))
  49         (push! module-dir %load-path)
  50         (push! module-dir %load-compiled-path))
  51       (let ((updates-dir (and=> (or (getenv "XDG_CONFIG_HOME")
  52                                     (and=> (getenv "HOME")
  53                                            (cut string-append <> "/.config")))
  54                                 (cut string-append <> "/guix/latest"))))
  55         (when (and updates-dir (file-exists? updates-dir))
  56           (push! updates-dir %load-path)
  57           (push! updates-dir %load-compiled-path)))))
  58
  59   (define (run-guix-main)
  60     (let ((guix-main (module-ref (resolve-interface '(guix ui))
  61                                  'guix-main)))
  62       (bindtextdomain "guix" (config-lookup "localedir"))
  63       (bindtextdomain "guix-packages" (config-lookup "localedir"))
  64       (apply guix-main (command-line))))
  65
  66   (maybe-augment-load-paths!)
  67   (run-guix-main))