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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2013, 2014 Ludovic Courtès <ludo@gnu.org>
;;;
;;; 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/>.
(define-module (gnu services xorg)
#:use-module (gnu services)
#:use-module (gnu system linux) ; 'pam-service'
#:use-module ((gnu packages base) #:select (guile-final))
#:use-module (gnu packages xorg)
#:use-module (gnu packages gl)
#:use-module (gnu packages slim)
#:use-module (gnu packages ratpoison)
#:use-module (gnu packages admin)
#:use-module (gnu packages bash)
#:use-module (guix monads)
#:use-module (guix derivations)
#:export (xorg-start-command
slim-service))
;;; Commentary:
;;;
;;; Services that relate to the X Window System.
;;;
;;; Code:
(define* (xorg-start-command #:key
(guile guile-final)
(xorg-server xorg-server))
"Return a derivation that builds a GUILE script to start the X server from
XORG-SERVER. Usually the X server is started by a login manager."
(define (xserver.conf)
(text-file* "xserver.conf" "
Section \"Files\"
FontPath \"" font-adobe75dpi "/share/font/X11/75dpi\"
ModulePath \"" xf86-video-vesa "/lib/xorg/modules/drivers\"
ModulePath \"" xf86-input-mouse "/lib/xorg/modules/input\"
ModulePath \"" xf86-input-keyboard "/lib/xorg/modules/input\"
ModulePath \"" xorg-server "/lib/xorg/modules\"
ModulePath \"" xorg-server "/lib/xorg/modules/extensions\"
ModulePath \"" xorg-server "/lib/xorg/modules/multimedia\"
EndSection
Section \"ServerFlags\"
Option \"AllowMouseOpenFail\" \"on""
EndSection
Section \"Monitor\"
Identifier \"Monitor[0]\"
EndSection
Section \"InputClass\"
Identifier \"Generic keyboard\"
MatchIsKeyboard \"on\"
Option \"XkbRules\" \"base\"
Option \"XkbModel\" \"pc104\"
EndSection
Section \"ServerLayout\"
Identifier \"Layout\"
Screen \"Screen-vesa\"
EndSection
Section \"Device\"
Identifier \"Device-vesa\"
Driver \"vesa\"
EndSection
Section \"Screen\"
Identifier \"Screen-vesa\"
Device \"Device-vesa\"
EndSection"))
(mlet %store-monad ((guile-bin (package-file guile "bin/guile"))
(xorg-bin (package-file xorg-server "bin/X"))
(dri (package-file mesa "lib/dri"))
(xkbcomp-bin (package-file xkbcomp "bin"))
(xkb-dir (package-file xkeyboard-config
"share/X11/xkb"))
(config (xserver.conf)))
(define builder
;; Write a small wrapper around the X server.
`(let ((out (assoc-ref %outputs "out")))
(call-with-output-file out
(lambda (port)
(format port "#!~a --no-auto-compile~%!#~%" ,guile-bin)
(write '(begin
(setenv "XORG_DRI_DRIVER_PATH" ,dri)
(setenv "XKB_BINDIR" ,xkbcomp-bin)
(apply execl
,xorg-bin "-ac" "-logverbose" "-verbose"
"-xkbdir" ,xkb-dir
"-config" ,(derivation->output-path config)
"-nolisten" "tcp" "-terminate"
;; Note: SLiM and other display managers add the
;; '-auth' flag by themselves.
(cdr (command-line))))
port)))
(chmod out #o555)
#t))
(mlet %store-monad ((inputs (lower-inputs
`(("xorg" ,xorg-server)
("xkbcomp" ,xkbcomp)
("xkeyboard-config" ,xkeyboard-config)
("mesa" ,mesa)
("guile" ,guile)
("xorg.conf" ,config)))))
(derivation-expression "start-xorg" builder
#:inputs inputs))))
(define* (slim-service #:key (slim slim)
(allow-empty-passwords? #t) auto-login?
(default-user "")
(xauth xauth) (dmd dmd) (bash bash)
startx)
"Return a service that spawns the SLiM graphical login manager, which in
turn start the X display server with STARTX, a command as returned by
'xorg-start-command'.
When ALLOW-EMPTY-PASSWORDS? is true, allow logins with an empty password.
When AUTO-LOGIN? is true, log in automatically as DEFAULT-USER."
(define (slim.cfg)
;; TODO: Run "bash -login ~/.xinitrc %session".
(mlet %store-monad ((startx (or startx (xorg-start-command))))
(text-file* "slim.cfg" "
default_path /run/current-system/bin
default_xserver " startx "
xserver_arguments :0 vt7
xauth_path " xauth "/bin/xauth
authfile /var/run/slim.auth
# The login command. '%session' is replaced by the chosen session name, one
# of the names specified in the 'sessions' setting: 'wmaker', 'xfce', etc.
login_cmd exec " ratpoison "/bin/ratpoison
halt_cmd " dmd "/sbin/halt
reboot_cmd " dmd "/sbin/reboot
" (if auto-login?
(string-append "auto_login yes\ndefault_user " default-user)
""))))
(mlet %store-monad ((slim-bin (package-file slim "bin/slim"))
(bash-bin (package-file bash "bin/bash"))
(slim.cfg (slim.cfg)))
(return
(service
(documentation "Xorg display server")
(provision '(xorg-server))
(requirement '(host-name))
(start
;; XXX: Work around the inability to specify env. vars. directly.
`(make-forkexec-constructor
,bash-bin "-c"
,(string-append "SLIM_CFGFILE=" (derivation->output-path slim.cfg)
" " slim-bin
" -nodaemon")))
(stop `(make-kill-destructor))
(inputs `(("slim" ,slim)
("slim.cfg" ,slim.cfg)
("bash" ,bash)))
(respawn? #t)
(pam-services
;; Tell PAM about 'slim'.
(list (unix-pam-service
"slim"
#:allow-empty-passwords? allow-empty-passwords?)))))))
;;; xorg.scm ends here
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