753 lines
30 KiB
Scheme
753 lines
30 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2017 Andy Wingo <wingo@igalia.com>
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;;; Copyright © 2013, 2014, 2015, 2016, 2017 Ludovic Courtès <ludo@gnu.org>
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;;; Copyright © 2015 Sou Bunnbu <iyzsong@gmail.com>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu services xorg)
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#:use-module (gnu artwork)
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#:use-module (gnu services)
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#:use-module (gnu services shepherd)
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#:use-module (gnu system pam)
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#:use-module (gnu services dbus)
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#:use-module ((gnu packages base) #:select (canonical-package))
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#:use-module (gnu packages guile)
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#:use-module (gnu packages xorg)
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#:use-module (gnu packages gl)
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#:use-module (gnu packages display-managers)
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#:use-module (gnu packages gnustep)
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#:use-module (gnu packages gnome)
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#:use-module (gnu packages admin)
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#:use-module (gnu packages bash)
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#:use-module (gnu system shadow)
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#:use-module (guix gexp)
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#:use-module (guix store)
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#:use-module (guix packages)
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#:use-module (guix derivations)
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#:use-module (guix records)
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#:use-module (srfi srfi-1)
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#:use-module (srfi srfi-9)
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#:use-module (srfi srfi-26)
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#:use-module (ice-9 match)
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#:export (xorg-configuration-file
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%default-xorg-modules
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%default-xorg-fonts
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xorg-wrapper
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xorg-start-command
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xinitrc
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%default-slim-theme
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%default-slim-theme-name
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slim-configuration
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slim-configuration?
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slim-configuration-slim
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slim-configuration-allow-empty-passwords?
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slim-configuration-auto-login?
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slim-configuration-default-user
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slim-configuration-theme
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slim-configuration-theme-name
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slim-configuration-xauth
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slim-configuration-shepherd
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slim-configuration-auto-login-session
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slim-configuration-startx
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slim-service-type
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slim-service
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screen-locker
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screen-locker?
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screen-locker-service-type
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screen-locker-service
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gdm-configuration
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gdm-service-type
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gdm-service))
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;;; Commentary:
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;;;
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;;; Services that relate to the X Window System.
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;;;
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;;; Code:
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(define %default-xorg-modules
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;; Default list of modules loaded by the server. Note that the order
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;; matters since it determines which driver is going to be used when there's
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;; a choice.
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(list xf86-video-vesa
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xf86-video-fbdev
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xf86-video-ati
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xf86-video-cirrus
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xf86-video-intel
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xf86-video-mach64
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xf86-video-nouveau
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xf86-video-nv
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xf86-video-sis
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;; Libinput is the new thing and is recommended over evdev/synaptics:
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;; <http://who-t.blogspot.fr/2015/01/xf86-input-libinput-compatibility-with.html>.
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xf86-input-libinput
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xf86-input-evdev
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xf86-input-keyboard
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xf86-input-mouse
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xf86-input-synaptics))
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(define %default-xorg-fonts
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;; Default list of fonts available to the X server.
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(list (file-append font-alias "/share/fonts/X11/75dpi")
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(file-append font-alias "/share/fonts/X11/100dpi")
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(file-append font-alias "/share/fonts/X11/misc")
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(file-append font-alias "/share/fonts/X11/cyrillic")
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(file-append font-misc-misc ;default fonts for xterm
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"/share/fonts/X11/misc")
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(file-append font-adobe75dpi "/share/fonts/X11/75dpi")))
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(define* (xorg-configuration-file #:key
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(modules %default-xorg-modules)
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(fonts %default-xorg-fonts)
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(drivers '()) (resolutions '())
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(extra-config '()))
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"Return a configuration file for the Xorg server containing search paths for
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all the common drivers.
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@var{modules} must be a list of @dfn{module packages} loaded by the Xorg
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server---e.g., @code{xf86-video-vesa}, @code{xf86-input-keyboard}, and so on.
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@var{fonts} must be a list of font directories to add to the server's
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@dfn{font path}.
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@var{drivers} must be either the empty list, in which case Xorg chooses a
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graphics driver automatically, or a list of driver names that will be tried in
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this order---e.g., @code{(\"modesetting\" \"vesa\")}.
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Likewise, when @var{resolutions} is the empty list, Xorg chooses an
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appropriate screen resolution; otherwise, it must be a list of
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resolutions---e.g., @code{((1024 768) (640 480))}.
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Last, @var{extra-config} is a list of strings or objects appended to the
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configuration file. It is used to pass extra text to be
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added verbatim to the configuration file."
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(define all-modules
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;; 'xorg-server' provides 'fbdevhw.so' etc.
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(append modules (list xorg-server)))
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(define build
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#~(begin
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(use-modules (ice-9 match)
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(srfi srfi-1)
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(srfi srfi-26))
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(call-with-output-file #$output
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(lambda (port)
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(define drivers
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'#$drivers)
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(define (device-section driver)
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(string-append "
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Section \"Device\"
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Identifier \"device-" driver "\"
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Driver \"" driver "\"
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EndSection"))
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(define (screen-section driver resolutions)
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(string-append "
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Section \"Screen\"
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Identifier \"screen-" driver "\"
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Device \"device-" driver "\"
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SubSection \"Display\"
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Modes "
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(string-join (map (match-lambda
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((x y)
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(string-append "\"" (number->string x)
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"x" (number->string y) "\"")))
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resolutions)) "
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EndSubSection
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EndSection"))
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(define (expand modules)
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;; Append to MODULES the relevant /lib/xorg/modules
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;; sub-directories.
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(append-map (lambda (module)
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(filter-map (lambda (directory)
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(let ((full (string-append module
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directory)))
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(and (file-exists? full)
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full)))
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'("/lib/xorg/modules/drivers"
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"/lib/xorg/modules/input"
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"/lib/xorg/modules/multimedia"
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"/lib/xorg/modules/extensions")))
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modules))
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(display "Section \"Files\"\n" port)
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(for-each (lambda (font)
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(format port " FontPath \"~a\"~%" font))
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'#$fonts)
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(for-each (lambda (module)
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(format port
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" ModulePath \"~a\"~%"
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module))
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(append (expand '#$all-modules)
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;; For fbdevhw.so and so on.
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(list #$(file-append xorg-server
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"/lib/xorg/modules"))))
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(display "EndSection\n" port)
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(display "
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Section \"ServerFlags\"
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Option \"AllowMouseOpenFail\" \"on\"
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EndSection\n" port)
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(display (string-join (map device-section drivers) "\n")
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port)
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(newline port)
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(display (string-join
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(map (cut screen-section <> '#$resolutions)
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drivers)
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"\n")
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port)
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(newline port)
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(for-each (lambda (config)
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(display config port))
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'#$extra-config)))))
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(computed-file "xserver.conf" build))
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(define (xorg-configuration-directory modules)
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"Return a directory that contains the @code{.conf} files for X.org that
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includes the @code{share/X11/xorg.conf.d} directories of each package listed
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in @var{modules}."
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(with-imported-modules '((guix build utils))
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(computed-file "xorg.conf.d"
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#~(begin
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(use-modules (guix build utils)
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(srfi srfi-1))
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(define files
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(append-map (lambda (module)
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(find-files (string-append
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module
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"/share/X11/xorg.conf.d")
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"\\.conf$"))
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(list #$@modules)))
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(mkdir #$output)
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(for-each (lambda (file)
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(symlink file
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(string-append #$output "/"
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(basename file))))
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files)
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#t))))
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(define* (xorg-wrapper #:key
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(guile (canonical-package guile-2.0))
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(modules %default-xorg-modules)
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(configuration-file (xorg-configuration-file
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#:modules modules))
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(xorg-server xorg-server))
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"Return a derivation that builds a @var{guile} script to start the X server
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from @var{xorg-server}. @var{configuration-file} is the server configuration
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file or a derivation that builds it; when omitted, the result of
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@code{xorg-configuration-file} is used. The resulting script should be used
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in place of @code{/usr/bin/X}."
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(define exp
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;; Write a small wrapper around the X server.
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#~(begin
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(setenv "XORG_DRI_DRIVER_PATH" (string-append #$mesa "/lib/dri"))
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(setenv "XKB_BINDIR" (string-append #$xkbcomp "/bin"))
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(let ((X (string-append #$xorg-server "/bin/X")))
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(apply execl X X
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"-xkbdir" (string-append #$xkeyboard-config "/share/X11/xkb")
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"-config" #$configuration-file
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"-configdir" #$(xorg-configuration-directory modules)
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(cdr (command-line))))))
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(program-file "X-wrapper" exp))
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(define* (xorg-start-command #:key
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(guile (canonical-package guile-2.0))
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(modules %default-xorg-modules)
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(fonts %default-xorg-fonts)
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(configuration-file
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(xorg-configuration-file #:modules modules
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#:fonts fonts))
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(xorg-server xorg-server))
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"Return a @code{startx} script in which @var{modules}, a list of X module
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packages, and @var{fonts}, a list of X font directories, are available. See
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@code{xorg-wrapper} for more details on the arguments. The result should be
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used in place of @code{startx}."
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(define X
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(xorg-wrapper #:guile guile
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#:configuration-file configuration-file
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#:modules modules
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#:xorg-server xorg-server))
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(define exp
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;; Write a small wrapper around the X server.
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#~(apply execl #$X #$X ;; Second #$X is for argv[0].
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"-logverbose" "-verbose" "-nolisten" "tcp" "-terminate"
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(cdr (command-line))))
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(program-file "startx" exp))
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(define* (xinitrc #:key
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(guile (canonical-package guile-2.0))
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fallback-session)
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"Return a system-wide xinitrc script that starts the specified X session,
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which should be passed to this script as the first argument. If not, the
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@var{fallback-session} will be used or, if @var{fallback-session} is false, a
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desktop session from the system or user profile will be used."
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(define builder
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#~(begin
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(use-modules (ice-9 match)
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(ice-9 regex)
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(ice-9 ftw)
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(ice-9 rdelim)
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(srfi srfi-1)
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(srfi srfi-26))
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(define (close-all-fdes)
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;; Close all the open file descriptors except 0 to 2.
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(let loop ((fd 3))
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(when (< fd 4096) ;FIXME: use sysconf + _SC_OPEN_MAX
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(false-if-exception (close-fdes fd))
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(loop (+ 1 fd)))))
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(define (exec-from-login-shell command . args)
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;; Run COMMAND from a login shell so that it gets to see the same
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;; environment variables that one gets when logging in on a tty, for
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;; instance.
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(let* ((pw (getpw (getuid)))
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(shell (passwd:shell pw)))
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;; Close any open file descriptors. This is all the more
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;; important that SLiM itself exec's us directly without closing
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;; its own file descriptors!
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(close-all-fdes)
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;; The '--login' option is supported at least by Bash and zsh.
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(execl shell shell "--login" "-c"
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(string-join (cons command args)))))
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(define system-profile
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"/run/current-system/profile")
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(define user-profile
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(and=> (getpw (getuid))
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(lambda (pw)
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(string-append (passwd:dir pw) "/.guix-profile"))))
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(define (xsession-command desktop-file)
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;; Read from DESKTOP-FILE its X session command and return it as a
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;; list.
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(define exec-regexp
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(make-regexp "^[[:blank:]]*Exec=(.*)$"))
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(call-with-input-file desktop-file
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(lambda (port)
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(let loop ()
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(match (read-line port)
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((? eof-object?) #f)
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((= (cut regexp-exec exec-regexp <>) result)
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(if result
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(string-tokenize (match:substring result 1))
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(loop))))))))
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(define (find-session profile)
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;; Return an X session command from PROFILE or #f if none was found.
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(let ((directory (string-append profile "/share/xsessions")))
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(match (scandir directory
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(cut string-suffix? ".desktop" <>))
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((or () #f)
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#f)
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((sessions ...)
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(any xsession-command
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(map (cut string-append directory "/" <>)
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sessions))))))
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(let* ((home (getenv "HOME"))
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(xsession-file (string-append home "/.xsession"))
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(session (match (command-line)
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((_)
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#$(if fallback-session
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#~(list #$fallback-session)
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#f))
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((_ x ..1)
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x))))
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(if (file-exists? xsession-file)
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;; Run ~/.xsession when it exists.
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(apply exec-from-login-shell xsession-file
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(or session '()))
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;; Otherwise, start the specified session or a fallback.
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(apply exec-from-login-shell
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(or session
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(find-session user-profile)
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(find-session system-profile)))))))
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(program-file "xinitrc" builder))
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;;;
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;;; SLiM log-in manager.
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;;;
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(define %default-slim-theme
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;; Theme based on work by Felipe López.
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(file-append %artwork-repository "/slim"))
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(define %default-slim-theme-name
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;; This must be the name of the sub-directory in %DEFAULT-SLIM-THEME that
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;; contains the actual theme files.
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"0.x")
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(define-record-type* <slim-configuration>
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slim-configuration make-slim-configuration
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slim-configuration?
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(slim slim-configuration-slim
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(default slim))
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(allow-empty-passwords? slim-configuration-allow-empty-passwords?
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(default #t))
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(auto-login? slim-configuration-auto-login?
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(default #f))
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(default-user slim-configuration-default-user
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(default ""))
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(theme slim-configuration-theme
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(default %default-slim-theme))
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(theme-name slim-configuration-theme-name
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(default %default-slim-theme-name))
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(xauth slim-configuration-xauth
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(default xauth))
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(shepherd slim-configuration-shepherd
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(default shepherd))
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(auto-login-session slim-configuration-auto-login-session
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(default #f))
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(startx slim-configuration-startx
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(default (xorg-start-command))))
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(define (slim-pam-service config)
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"Return a PAM service for @command{slim}."
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(list (unix-pam-service
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"slim"
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#:allow-empty-passwords?
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(slim-configuration-allow-empty-passwords? config))))
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(define (slim-shepherd-service config)
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(define slim.cfg
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(let ((xinitrc (xinitrc #:fallback-session
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(slim-configuration-auto-login-session config)))
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(slim (slim-configuration-slim config))
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(xauth (slim-configuration-xauth config))
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(startx (slim-configuration-startx config))
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(shepherd (slim-configuration-shepherd config))
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(theme-name (slim-configuration-theme-name config)))
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(mixed-text-file "slim.cfg" "
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default_path /run/current-system/profile/bin
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default_xserver " startx "
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xserver_arguments :0 vt7
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xauth_path " xauth "/bin/xauth
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authfile /var/run/slim.auth
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# The login command. '%session' is replaced by the chosen session name, one
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# of the names specified in the 'sessions' setting: 'wmaker', 'xfce', etc.
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login_cmd exec " xinitrc " %session
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sessiondir /run/current-system/profile/share/xsessions
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session_msg session (F1 to change):
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halt_cmd " shepherd "/sbin/halt
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reboot_cmd " shepherd "/sbin/reboot\n"
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(if (slim-configuration-auto-login? config)
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(string-append "auto_login yes\ndefault_user "
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(slim-configuration-default-user config) "\n")
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"")
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(if theme-name
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(string-append "current_theme " theme-name "\n")
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""))))
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(define theme
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(slim-configuration-theme config))
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(list (shepherd-service
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(documentation "Xorg display server")
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(provision '(xorg-server))
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(requirement '(user-processes host-name udev))
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(start
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#~(lambda ()
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;; A stale lock file can prevent SLiM from starting, so remove it to
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;; be on the safe side.
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(false-if-exception (delete-file "/var/run/slim.lock"))
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(fork+exec-command
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(list (string-append #$slim "/bin/slim") "-nodaemon")
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#:environment-variables
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(list (string-append "SLIM_CFGFILE=" #$slim.cfg)
|
||
#$@(if theme
|
||
(list #~(string-append "SLIM_THEMESDIR=" #$theme))
|
||
#~())))))
|
||
(stop #~(make-kill-destructor))
|
||
(respawn? #t))))
|
||
|
||
(define slim-service-type
|
||
(service-type (name 'slim)
|
||
(extensions
|
||
(list (service-extension shepherd-root-service-type
|
||
slim-shepherd-service)
|
||
(service-extension pam-root-service-type
|
||
slim-pam-service)
|
||
|
||
;; Unconditionally add xterm to the system profile, to
|
||
;; avoid bad surprises.
|
||
(service-extension profile-service-type
|
||
(const (list xterm)))))
|
||
(default-value (slim-configuration))))
|
||
|
||
(define* (slim-service #:key (slim slim) ;deprecated
|
||
(allow-empty-passwords? #t) auto-login?
|
||
(default-user "")
|
||
(theme %default-slim-theme)
|
||
(theme-name %default-slim-theme-name)
|
||
(xauth xauth) (shepherd shepherd)
|
||
(auto-login-session #f)
|
||
(startx (xorg-start-command)))
|
||
"Return a service that spawns the SLiM graphical login manager, which in
|
||
turn starts the X display server with @var{startx}, a command as returned by
|
||
@code{xorg-start-command}.
|
||
|
||
@cindex X session
|
||
|
||
SLiM automatically looks for session types described by the @file{.desktop}
|
||
files in @file{/run/current-system/profile/share/xsessions} and allows users
|
||
to choose a session from the log-in screen using @kbd{F1}. Packages such as
|
||
@var{xfce}, @var{sawfish}, and @var{ratpoison} provide @file{.desktop} files;
|
||
adding them to the system-wide set of packages automatically makes them
|
||
available at the log-in screen.
|
||
|
||
In addition, @file{~/.xsession} files are honored. When available,
|
||
@file{~/.xsession} must be an executable that starts a window manager
|
||
and/or other X clients.
|
||
|
||
When @var{allow-empty-passwords?} is true, allow logins with an empty
|
||
password. When @var{auto-login?} is true, log in automatically as
|
||
@var{default-user} with @var{auto-login-session}.
|
||
|
||
If @var{theme} is @code{#f}, the use the default log-in theme; otherwise
|
||
@var{theme} must be a gexp denoting the name of a directory containing the
|
||
theme to use. In that case, @var{theme-name} specifies the name of the
|
||
theme."
|
||
(service slim-service-type
|
||
(slim-configuration
|
||
(slim slim)
|
||
(allow-empty-passwords? allow-empty-passwords?)
|
||
(auto-login? auto-login?) (default-user default-user)
|
||
(theme theme) (theme-name theme-name)
|
||
(xauth xauth) (shepherd shepherd)
|
||
(auto-login-session auto-login-session)
|
||
(startx startx))))
|
||
|
||
|
||
;;;
|
||
;;; Screen lockers & co.
|
||
;;;
|
||
|
||
(define-record-type <screen-locker>
|
||
(screen-locker name program empty?)
|
||
screen-locker?
|
||
(name screen-locker-name) ;string
|
||
(program screen-locker-program) ;gexp
|
||
(empty? screen-locker-allows-empty-passwords?)) ;Boolean
|
||
|
||
(define screen-locker-pam-services
|
||
(match-lambda
|
||
(($ <screen-locker> name _ empty?)
|
||
(list (unix-pam-service name
|
||
#:allow-empty-passwords? empty?)))))
|
||
|
||
(define screen-locker-setuid-programs
|
||
(compose list screen-locker-program))
|
||
|
||
(define screen-locker-service-type
|
||
(service-type (name 'screen-locker)
|
||
(extensions
|
||
(list (service-extension pam-root-service-type
|
||
screen-locker-pam-services)
|
||
(service-extension setuid-program-service-type
|
||
screen-locker-setuid-programs)))))
|
||
|
||
(define* (screen-locker-service package
|
||
#:optional
|
||
(program (package-name package))
|
||
#:key allow-empty-passwords?)
|
||
"Add @var{package}, a package for a screen locker or screen saver whose
|
||
command is @var{program}, to the set of setuid programs and add a PAM entry
|
||
for it. For example:
|
||
|
||
@lisp
|
||
(screen-locker-service xlockmore \"xlock\")
|
||
@end lisp
|
||
|
||
makes the good ol' XlockMore usable."
|
||
(service screen-locker-service-type
|
||
(screen-locker program
|
||
(file-append package "/bin/" program)
|
||
allow-empty-passwords?)))
|
||
|
||
(define %gdm-accounts
|
||
(list (user-group (name "gdm") (system? #t))
|
||
(user-account
|
||
(name "gdm")
|
||
(group "gdm")
|
||
(system? #t)
|
||
(comment "GNOME Display Manager user")
|
||
(home-directory "/var/lib/gdm")
|
||
(shell (file-append shadow "/sbin/nologin")))))
|
||
|
||
(define-record-type* <gdm-configuration>
|
||
gdm-configuration make-gdm-configuration
|
||
gdm-configuration?
|
||
(gdm gdm-configuration-gdm (default gdm))
|
||
(allow-empty-passwords? gdm-configuration-allow-empty-passwords? (default #t))
|
||
(allow-root? gdm-configuration-allow-root? (default #t))
|
||
(auto-login? gdm-configuration-auto-login? (default #f))
|
||
(default-user gdm-configuration-default-user (default #f))
|
||
(x-server gdm-configuration-x-server))
|
||
|
||
(define (gdm-etc-service config)
|
||
(define gdm-configuration-file
|
||
(mixed-text-file "gdm-custom.conf"
|
||
"[daemon]\n"
|
||
"#User=gdm\n"
|
||
"#Group=gdm\n"
|
||
(if (gdm-configuration-auto-login? config)
|
||
(string-append
|
||
"AutomaticLoginEnable=true\n"
|
||
"AutomaticLogin="
|
||
(or (gdm-configuration-default-user config)
|
||
(error "missing default user for auto-login"))
|
||
"\n")
|
||
(string-append
|
||
"AutomaticLoginEnable=false\n"
|
||
"#AutomaticLogin=\n"))
|
||
"#TimedLoginEnable=false\n"
|
||
"#TimedLogin=\n"
|
||
"#TimedLoginDelay=0\n"
|
||
"#InitialSetupEnable=true\n"
|
||
;; Enable me once X is working.
|
||
"WaylandEnable=false\n"
|
||
"\n"
|
||
"[debug]\n"
|
||
"Enable=true\n"
|
||
"\n"
|
||
"[security]\n"
|
||
"#DisallowTCP=true\n"
|
||
"#AllowRemoteAutoLogin=false\n"))
|
||
`(("gdm" ,(file-union
|
||
"gdm"
|
||
`(("custom.conf" ,gdm-configuration-file))))))
|
||
|
||
(define (gdm-pam-service config)
|
||
"Return a PAM service for @command{gdm}."
|
||
(list
|
||
(pam-service
|
||
(inherit (unix-pam-service "gdm-autologin"))
|
||
(auth (list (pam-entry
|
||
(control "[success=ok default=1]")
|
||
(module (file-append (gdm-configuration-gdm config)
|
||
"/lib/security/pam_gdm.so")))
|
||
(pam-entry
|
||
(control "sufficient")
|
||
(module "pam_permit.so")))))
|
||
(pam-service
|
||
(inherit (unix-pam-service "gdm-launch-environment"))
|
||
(auth (list (pam-entry
|
||
(control "required")
|
||
(module "pam_permit.so")))))
|
||
(unix-pam-service
|
||
"gdm-password"
|
||
#:allow-empty-passwords? (gdm-configuration-allow-empty-passwords? config)
|
||
#:allow-root? (gdm-configuration-allow-root? config))))
|
||
|
||
(define (gdm-shepherd-service config)
|
||
(list (shepherd-service
|
||
(documentation "Xorg display server (GDM)")
|
||
(provision '(xorg-server))
|
||
(requirement '(dbus-system user-processes host-name udev))
|
||
;; While this service isn't working properly, turn off auto-start.
|
||
(auto-start? #f)
|
||
(start #~(lambda ()
|
||
(fork+exec-command
|
||
(list #$(file-append (gdm-configuration-gdm config)
|
||
"/bin/gdm"))
|
||
#:environment-variables
|
||
(list (string-append
|
||
"GDM_X_SERVER="
|
||
#$(gdm-configuration-x-server config))
|
||
;; XXX: GDM requires access to a handful of
|
||
;; programs and components from Gnome (gnome-shell,
|
||
;; dbus, and gnome-session among others). The
|
||
;; following variables only work provided Gnome is
|
||
;; installed.
|
||
"XDG_DATA_DIRS=/run/current-system/profile/share"
|
||
"PATH=/run/current-system/profile/bin"))))
|
||
(stop #~(make-kill-destructor))
|
||
(respawn? #t))))
|
||
|
||
(define gdm-service-type
|
||
(service-type (name 'gdm)
|
||
(extensions
|
||
(list (service-extension shepherd-root-service-type
|
||
gdm-shepherd-service)
|
||
(service-extension account-service-type
|
||
(const %gdm-accounts))
|
||
(service-extension pam-root-service-type
|
||
gdm-pam-service)
|
||
(service-extension etc-service-type
|
||
gdm-etc-service)
|
||
(service-extension dbus-root-service-type
|
||
(compose list gdm-configuration-gdm))))))
|
||
|
||
;; This service isn't working yet; it gets as far as starting to run the
|
||
;; greeter from gnome-shell but doesn't get any further. It is here because
|
||
;; it doesn't hurt anyone and perhaps it inspires someone to fix it :)
|
||
(define* (gdm-service #:key (gdm gdm)
|
||
(allow-empty-passwords? #t)
|
||
(x-server (xorg-wrapper)))
|
||
"Return a service that spawns the GDM graphical login manager, which in turn
|
||
starts the X display server with @var{X}, a command as returned by
|
||
@code{xorg-wrapper}.
|
||
|
||
@cindex X session
|
||
|
||
GDM automatically looks for session types described by the @file{.desktop}
|
||
files in @file{/run/current-system/profile/share/xsessions} and allows users
|
||
to choose a session from the log-in screen using @kbd{F1}. Packages such as
|
||
@var{xfce}, @var{sawfish}, and @var{ratpoison} provide @file{.desktop} files;
|
||
adding them to the system-wide set of packages automatically makes them
|
||
available at the log-in screen.
|
||
|
||
In addition, @file{~/.xsession} files are honored. When available,
|
||
@file{~/.xsession} must be an executable that starts a window manager
|
||
and/or other X clients.
|
||
|
||
When @var{allow-empty-passwords?} is true, allow logins with an empty
|
||
password."
|
||
(service gdm-service-type
|
||
(gdm-configuration
|
||
(gdm gdm)
|
||
(allow-empty-passwords? allow-empty-passwords?)
|
||
(x-server x-server))))
|
||
|
||
;;; xorg.scm ends here
|