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guix/gnu/services/xorg.scm
Diego Nicola Barbato 61569171d0
services: slim: Allow SLiM to be started on multiple ttys. 
This change makes it possible to add multiple SLiM services to an operating
system configuration by setting the new 'display' and 'vt' fields in their
configurations to different values.  Each SLiM service will get its own
authfile, logfile, lockfile, and shepherd service, which will start SLiM on a
different tty.

* gnu/services/xorg.scm: Export slim-configuration-display and
  slim-configuration-vt.
  (<slim-configuration>)[display, vt]: New fields.
  (slim-shepherd-service): Refactor let.
  [slim.cfg]: Use new fields for setting display_name, xserver_arguments,
  authfile, lockfile, and logfile.
  [shepherd-service][provision]: Name the shepherd service according to the
  value of 'vt'.
  [shepherd-service][start]: Delete the right lockfile.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
2019-05-07 15:46:54 +02:00

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;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 Andy Wingo <wingo@igalia.com>
;;; Copyright © 2013, 2014, 2015, 2016, 2017, 2019 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2015 Sou Bunnbu <iyzsong@gmail.com>
;;; Copyright © 2018, 2019 Timothy Sample <samplet@ngyro.com>
;;; Copyright © 2019 Jan (janneke) Nieuwenhuizen <janneke@gnu.org>
;;; Copyright © 2019 Tim Gesthuizen <tim.gesthuizen@yahoo.de>
;;;
;;; 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 artwork)
#:use-module (gnu services)
#:use-module (gnu services shepherd)
#:use-module (gnu system pam)
#:use-module (gnu system keyboard)
#:use-module (gnu services base)
#:use-module (gnu services dbus)
#:use-module ((gnu packages base) #:select (canonical-package))
#:use-module (gnu packages guile)
#:use-module (gnu packages xorg)
#:use-module (gnu packages fonts)
#:use-module (gnu packages gl)
#:use-module (gnu packages glib)
#:use-module (gnu packages display-managers)
#:use-module (gnu packages freedesktop)
#:use-module (gnu packages gnustep)
#:use-module (gnu packages gnome)
#:use-module (gnu packages admin)
#:use-module (gnu packages bash)
#:use-module (gnu system shadow)
#:use-module (guix gexp)
#:use-module (guix store)
#:use-module (guix packages)
#:use-module (guix derivations)
#:use-module (guix records)
#:use-module (guix deprecation)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-9)
#:use-module (srfi srfi-26)
#:use-module (ice-9 match)
#:export (xorg-configuration
xorg-configuration?
xorg-configuration-modules
xorg-configuration-fonts
xorg-configuration-drivers
xorg-configuration-resolutions
xorg-configuration-extra-config
xorg-configuration-server
xorg-configuration-server-arguments
%default-xorg-modules
%default-xorg-fonts
xorg-wrapper
xorg-start-command
xinitrc
%default-slim-theme
%default-slim-theme-name
slim-configuration
slim-configuration?
slim-configuration-slim
slim-configuration-allow-empty-passwords?
slim-configuration-auto-login?
slim-configuration-default-user
slim-configuration-theme
slim-configuration-theme-name
slim-configuration-xauth
slim-configuration-shepherd
slim-configuration-auto-login-session
slim-configuration-xorg
slim-configuration-display
slim-configuration-vt
slim-configuration-sessreg
slim-service-type
slim-service
screen-locker
screen-locker?
screen-locker-service-type
screen-locker-service
localed-configuration
localed-configuration?
localed-service-type
gdm-configuration
gdm-service-type
gdm-service
set-xorg-configuration))
;;; Commentary:
;;;
;;; Services that relate to the X Window System.
;;;
;;; Code:
(define %default-xorg-modules
;; Default list of modules loaded by the server. When multiple drivers
;; match, the first one in the list is loaded.
(list xf86-video-vesa
xf86-video-fbdev
xf86-video-amdgpu
xf86-video-ati
xf86-video-cirrus
xf86-video-intel
xf86-video-mach64
xf86-video-nouveau
xf86-video-nv
xf86-video-sis
;; Libinput is the new thing and is recommended over evdev/synaptics:
;; <http://who-t.blogspot.fr/2015/01/xf86-input-libinput-compatibility-with.html>.
xf86-input-libinput
xf86-input-evdev
xf86-input-keyboard
xf86-input-mouse
xf86-input-synaptics))
(define %default-xorg-fonts
;; Default list of fonts available to the X server.
(list (file-append font-alias "/share/fonts/X11/75dpi")
(file-append font-alias "/share/fonts/X11/100dpi")
(file-append font-alias "/share/fonts/X11/misc")
(file-append font-alias "/share/fonts/X11/cyrillic")
(file-append font-misc-misc ;default fonts for xterm
"/share/fonts/X11/misc")
(file-append font-adobe75dpi "/share/fonts/X11/75dpi")))
(define %default-xorg-server-arguments
;; Default command-line arguments for X.
'("-nolisten" "tcp"))
;; Configuration of an Xorg server.
(define-record-type* <xorg-configuration>
xorg-configuration make-xorg-configuration
xorg-configuration?
(modules xorg-configuration-modules ;list of packages
(default %default-xorg-modules))
(fonts xorg-configuration-fonts ;list of packges
(default %default-xorg-fonts))
(drivers xorg-configuration-drivers ;list of strings
(default '()))
(resolutions xorg-configuration-resolutions ;list of tuples
(default '()))
(keyboard-layout xorg-configuration-keyboard-layout ;#f | <keyboard-layout>
(default #f))
(extra-config xorg-configuration-extra-config ;list of strings
(default '()))
(server xorg-configuration-server ;package
(default xorg-server))
(server-arguments xorg-configuration-server-arguments ;list of strings
(default %default-xorg-server-arguments)))
(define (xorg-configuration->file config)
"Compute an Xorg configuration file corresponding to CONFIG, an
<xorg-configuration> record."
(define all-modules
;; 'xorg-server' provides 'fbdevhw.so' etc.
(append (xorg-configuration-modules config)
(list xorg-server)))
(define build
#~(begin
(use-modules (ice-9 match)
(srfi srfi-1)
(srfi srfi-26))
(call-with-output-file #$output
(lambda (port)
(define drivers
'#$(xorg-configuration-drivers config))
(define (device-section driver)
(string-append "
Section \"Device\"
Identifier \"device-" driver "\"
Driver \"" driver "\"
EndSection"))
(define (screen-section driver resolutions)
(string-append "
Section \"Screen\"
Identifier \"screen-" driver "\"
Device \"device-" driver "\"
SubSection \"Display\"
Modes "
(string-join (map (match-lambda
((x y)
(string-append "\"" (number->string x)
"x" (number->string y) "\"")))
resolutions)) "
EndSubSection
EndSection"))
(define (input-class-section layout variant model options)
(string-append "
Section \"InputClass\"
Identifier \"evdev keyboard catchall\"
MatchIsKeyboard \"on\"
Option \"XkbLayout\" " (object->string layout)
(if variant
(string-append " Option \"XkbVariant\" \""
variant "\"")
"")
(if model
(string-append " Option \"XkbModel\" \""
model "\"")
"")
(match options
(()
"")
(_
(string-append " Option \"XkbOptions\" \""
(string-join options ",") "\""))) "
MatchDevicePath \"/dev/input/event*\"
Driver \"evdev\"
EndSection\n"))
(define (expand modules)
;; Append to MODULES the relevant /lib/xorg/modules
;; sub-directories.
(append-map (lambda (module)
(filter-map (lambda (directory)
(let ((full (string-append module
directory)))
(and (file-exists? full)
full)))
'("/lib/xorg/modules/drivers"
"/lib/xorg/modules/input"
"/lib/xorg/modules/multimedia"
"/lib/xorg/modules/extensions")))
modules))
(display "Section \"Files\"\n" port)
(for-each (lambda (font)
(format port " FontPath \"~a\"~%" font))
'#$(xorg-configuration-fonts config))
(for-each (lambda (module)
(format port
" ModulePath \"~a\"~%"
module))
(append (expand '#$all-modules)
;; For fbdevhw.so and so on.
(list #$(file-append xorg-server
"/lib/xorg/modules"))))
(display "EndSection\n" port)
(display "
Section \"ServerFlags\"
Option \"AllowMouseOpenFail\" \"on\"
EndSection\n" port)
(display (string-join (map device-section drivers) "\n")
port)
(newline port)
(display (string-join
(map (cut screen-section <>
'#$(xorg-configuration-resolutions config))
drivers)
"\n")
port)
(newline port)
(let ((layout #$(and=> (xorg-configuration-keyboard-layout config)
keyboard-layout-name))
(variant #$(and=> (xorg-configuration-keyboard-layout config)
keyboard-layout-variant))
(model #$(and=> (xorg-configuration-keyboard-layout config)
keyboard-layout-model))
(options '#$(and=> (xorg-configuration-keyboard-layout config)
keyboard-layout-options)))
(when layout
(display (input-class-section layout variant model options)
port)
(newline port)))
(for-each (lambda (config)
(display config port))
'#$(xorg-configuration-extra-config config))))))
(computed-file "xserver.conf" build))
(define (xorg-configuration-directory modules)
"Return a directory that contains the @code{.conf} files for X.org that
includes the @code{share/X11/xorg.conf.d} directories of each package listed
in @var{modules}."
(with-imported-modules '((guix build utils))
(computed-file "xorg.conf.d"
#~(begin
(use-modules (guix build utils)
(srfi srfi-1))
(define files
(append-map (lambda (module)
(find-files (string-append
module
"/share/X11/xorg.conf.d")
"\\.conf$"))
(list #$@modules)))
(mkdir #$output)
(for-each (lambda (file)
(symlink file
(string-append #$output "/"
(basename file))))
files)
#t))))
(define* (xorg-wrapper #:optional (config (xorg-configuration)))
"Return a derivation that builds a script to start the X server with the
given @var{config}. The resulting script should be used in place of
@code{/usr/bin/X}."
(define exp
;; Write a small wrapper around the X server.
#~(begin
(setenv "XORG_DRI_DRIVER_PATH" (string-append #$mesa "/lib/dri"))
(setenv "XKB_BINDIR" (string-append #$xkbcomp "/bin"))
(let ((X (string-append #$(xorg-configuration-server config) "/bin/X")))
(apply execl X X
"-xkbdir" (string-append #$xkeyboard-config "/share/X11/xkb")
"-config" #$(xorg-configuration->file config)
"-configdir" #$(xorg-configuration-directory
(xorg-configuration-modules config))
(cdr (command-line))))))
(program-file "X-wrapper" exp))
(define* (xorg-start-command #:optional (config (xorg-configuration)))
"Return a @code{startx} script in which the modules, fonts, etc. specified
in @var{config}, are available. The result should be used in place of
@code{startx}."
(define X
(xorg-wrapper config))
(define exp
;; Write a small wrapper around the X server.
#~(apply execl #$X #$X ;; Second #$X is for argv[0].
"-logverbose" "-verbose" "-terminate"
#$@(xorg-configuration-server-arguments config)
(cdr (command-line))))
(program-file "startx" exp))
(define* (xinitrc #:key fallback-session)
"Return a system-wide xinitrc script that starts the specified X session,
which should be passed to this script as the first argument. If not, the
@var{fallback-session} will be used or, if @var{fallback-session} is false, a
desktop session from the system or user profile will be used."
(define builder
#~(begin
(use-modules (ice-9 match)
(ice-9 regex)
(ice-9 ftw)
(ice-9 rdelim)
(srfi srfi-1)
(srfi srfi-26))
(define (close-all-fdes)
;; Close all the open file descriptors except 0 to 2.
(let loop ((fd 3))
(when (< fd 4096) ;FIXME: use sysconf + _SC_OPEN_MAX
(false-if-exception (close-fdes fd))
(loop (+ 1 fd)))))
(define (exec-from-login-shell command . args)
;; Run COMMAND from a login shell so that it gets to see the same
;; environment variables that one gets when logging in on a tty, for
;; instance.
(let* ((pw (getpw (getuid)))
(shell (passwd:shell pw)))
;; Close any open file descriptors. This is all the more
;; important that SLiM itself exec's us directly without closing
;; its own file descriptors!
(close-all-fdes)
;; The '--login' option is supported at least by Bash and zsh.
(execl shell shell "--login" "-c"
(string-join (cons command args)))))
(define system-profile
"/run/current-system/profile")
(define user-profile
(and=> (getpw (getuid))
(lambda (pw)
(string-append (passwd:dir pw) "/.guix-profile"))))
(define (xsession-command desktop-file)
;; Read from DESKTOP-FILE its X session command and return it as a
;; list.
(define exec-regexp
(make-regexp "^[[:blank:]]*Exec=(.*)$"))
(call-with-input-file desktop-file
(lambda (port)
(let loop ()
(match (read-line port)
((? eof-object?) #f)
((= (cut regexp-exec exec-regexp <>) result)
(if result
(string-tokenize (match:substring result 1))
(loop))))))))
(define (find-session profile)
;; Return an X session command from PROFILE or #f if none was found.
(let ((directory (string-append profile "/share/xsessions")))
(match (scandir directory
(cut string-suffix? ".desktop" <>))
((or () #f)
#f)
((sessions ...)
(any xsession-command
(map (cut string-append directory "/" <>)
sessions))))))
(let* ((home (getenv "HOME"))
(xsession-file (string-append home "/.xsession"))
(session (match (command-line)
((_)
#$(if fallback-session
#~(list #$fallback-session)
#f))
((_ x ..1)
x))))
(if (file-exists? xsession-file)
;; Run ~/.xsession when it exists.
(apply exec-from-login-shell xsession-file
(or session '()))
;; Otherwise, start the specified session or a fallback.
(apply exec-from-login-shell
(or session
(find-session user-profile)
(find-session system-profile)))))))
(program-file "xinitrc" builder))
;;;
;;; SLiM log-in manager.
;;;
(define %default-slim-theme
;; Theme based on work by Felipe López.
(file-append %artwork-repository "/slim"))
(define %default-slim-theme-name
;; This must be the name of the sub-directory in %DEFAULT-SLIM-THEME that
;; contains the actual theme files.
"0.x")
(define-record-type* <slim-configuration>
slim-configuration make-slim-configuration
slim-configuration?
(slim slim-configuration-slim
(default slim))
(allow-empty-passwords? slim-configuration-allow-empty-passwords?
(default #t))
(auto-login? slim-configuration-auto-login?
(default #f))
(default-user slim-configuration-default-user
(default ""))
(theme slim-configuration-theme
(default %default-slim-theme))
(theme-name slim-configuration-theme-name
(default %default-slim-theme-name))
(xauth slim-configuration-xauth
(default xauth))
(shepherd slim-configuration-shepherd
(default shepherd))
(auto-login-session slim-configuration-auto-login-session
(default #f))
(xorg-configuration slim-configuration-xorg
(default (xorg-configuration)))
(display slim-configuration-display
(default ":0"))
(vt slim-configuration-vt
(default "vt7"))
(sessreg slim-configuration-sessreg
(default sessreg)))
(define (slim-pam-service config)
"Return a PAM service for @command{slim}."
(list (unix-pam-service
"slim"
#:allow-empty-passwords?
(slim-configuration-allow-empty-passwords? config))))
(define (slim-shepherd-service config)
(let* ((xinitrc (xinitrc #:fallback-session
(slim-configuration-auto-login-session config)))
(xauth (slim-configuration-xauth config))
(startx (xorg-start-command (slim-configuration-xorg config)))
(display (slim-configuration-display config))
(vt (slim-configuration-vt config))
(shepherd (slim-configuration-shepherd config))
(theme-name (slim-configuration-theme-name config))
(sessreg (slim-configuration-sessreg config))
(lockfile (string-append "/var/run/slim-" vt ".lock")))
(define slim.cfg
(mixed-text-file "slim.cfg" "
default_path /run/current-system/profile/bin
default_xserver " startx "
display_name " display "
xserver_arguments " vt "
xauth_path " xauth "/bin/xauth
authfile /var/run/slim-" vt ".auth
lockfile " lockfile "
logfile /var/log/slim-" vt ".log
# 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 " xinitrc " %session
sessiondir /run/current-system/profile/share/xsessions
session_msg session (F1 to change):
sessionstart_cmd " sessreg "/bin/sessreg -a -l $DISPLAY %user
sessionstop_cmd " sessreg "/bin/sessreg -d -l $DISPLAY %user
halt_cmd " shepherd "/sbin/halt
reboot_cmd " shepherd "/sbin/reboot\n"
(if (slim-configuration-auto-login? config)
(string-append "auto_login yes\ndefault_user "
(slim-configuration-default-user config) "\n")
"")
(if theme-name
(string-append "current_theme " theme-name "\n")
"")))
(define theme
(slim-configuration-theme config))
(list (shepherd-service
(documentation "Xorg display server")
(provision (list (symbol-append 'xorg-server-
(string->symbol vt))))
(requirement '(user-processes host-name udev))
(start
#~(lambda ()
;; A stale lock file can prevent SLiM from starting, so remove it to
;; be on the safe side.
(false-if-exception (delete-file lockfile))
(fork+exec-command
(list (string-append #$(slim-configuration-slim config)
"/bin/slim")
"-nodaemon")
#:environment-variables
(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-deprecated (slim-service #:key (slim slim)
(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)))
slim-service-type
"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))))
;;;
;;; 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?)))
;;;
;;; Locale service.
;;;
(define-record-type* <localed-configuration>
localed-configuration make-localed-configuration
localed-configuration?
(localed localed-configuration-localed
(default localed))
(keyboard-layout localed-configuration-keyboard-layout
(default #f)))
(define (localed-dbus-service config)
"Return the 'localed' D-Bus service for @var{config}, a
@code{<localed-configuration>} record."
(define keyboard-layout
(localed-configuration-keyboard-layout config))
;; The primary purpose of 'localed' is to tell GDM what the "current" Xorg
;; keyboard layout is. If 'localed' is missing, or if it's unable to
;; determine the current XKB layout, then GDM forcefully installs its
;; default XKB config (US English). Here we communicate the configured
;; layout through environment variables.
(if keyboard-layout
(let* ((layout (keyboard-layout-name keyboard-layout))
(variant (keyboard-layout-variant keyboard-layout))
(model (keyboard-layout-model keyboard-layout))
(options (keyboard-layout-options keyboard-layout)))
(list (wrapped-dbus-service
(localed-configuration-localed config)
"libexec/localed/localed"
`(("GUIX_XKB_LAYOUT" ,layout)
,@(if variant
`(("GUIX_XKB_VARIANT" ,variant))
'())
,@(if model
`(("GUIX_XKB_MODEL" ,model))
'())
,@(if (null? options)
'()
`(("GUIX_XKB_OPTIONS"
,(string-join options ","))))))))
'()))
(define localed-service-type
(let ((package (lambda (config)
;; Don't bother if the user didn't specify any keyboard
;; layout.
(if (localed-configuration-keyboard-layout config)
(list (localed-configuration-localed config))
'()))))
(service-type (name 'localed)
(extensions
(list (service-extension dbus-root-service-type
localed-dbus-service)
(service-extension udev-service-type package)
(service-extension polkit-service-type package)
;; Add 'localectl' to the profile.
(service-extension profile-service-type package)))
;; This service can be extended, typically by the X login
;; manager, to communicate the chosen Xorg keyboard layout.
(compose (lambda (extensions)
(find keyboard-layout? extensions)))
(extend (lambda (config keyboard-layout)
(localed-configuration
(inherit config)
(keyboard-layout keyboard-layout))))
(description
"Run the locale daemon, @command{localed}, which can be used
to control the system locale and keyboard mapping from user programs such as
the GNOME desktop environment.")
(default-value (localed-configuration)))))
;;;
;;; GNOME Desktop Manager.
;;;
(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 dbus-daemon-wrapper
(program-file "gdm-dbus-wrapper"
#~(begin
(setenv "XDG_CONFIG_DIRS"
"/run/current-system/profile/etc/xdg")
(setenv "XDG_DATA_DIRS"
"/run/current-system/profile/share")
(apply execl (string-append #$dbus "/bin/dbus-daemon")
(program-arguments)))))
(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))
(auto-login? gdm-configuration-auto-login? (default #f))
(dbus-daemon gdm-configuration-dbus-daemon (default dbus-daemon-wrapper))
(default-user gdm-configuration-default-user (default #f))
(gnome-shell-assets gdm-configuration-gnome-shell-assets
(default (list adwaita-icon-theme font-cantarell)))
(xorg-configuration gdm-configuration-xorg
(default (xorg-configuration)))
(x-session gdm-configuration-x-session
(default (xinitrc))))
(define (gdm-configuration-file config)
(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"))
(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))))
(define (gdm-shepherd-service config)
(list (shepherd-service
(documentation "Xorg display server (GDM)")
(provision '(xorg-server))
(requirement '(dbus-system user-processes host-name udev))
(start #~(lambda ()
(fork+exec-command
(list #$(file-append (gdm-configuration-gdm config)
"/bin/gdm"))
#:environment-variables
(list (string-append
"GDM_CUSTOM_CONF="
#$(gdm-configuration-file config))
(string-append
"GDM_DBUS_DAEMON="
#$(gdm-configuration-dbus-daemon config))
(string-append
"GDM_X_SERVER="
#$(xorg-wrapper
(gdm-configuration-xorg config)))
(string-append
"GDM_X_SESSION="
#$(gdm-configuration-x-session config))
(string-append
"XDG_DATA_DIRS="
((lambda (ls) (string-join ls ":"))
(map (lambda (path)
(string-append path "/share"))
;; XXX: Remove gnome-shell below when GDM
;; can depend on GNOME Shell directly.
(cons #$gnome-shell
'#$(gdm-configuration-gnome-shell-assets
config)))))))))
(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 profile-service-type
gdm-configuration-gnome-shell-assets)
(service-extension dbus-root-service-type
(compose list
gdm-configuration-gdm))
(service-extension localed-service-type
(compose
xorg-configuration-keyboard-layout
gdm-configuration-xorg))))
;; For convenience, this service can be extended with an
;; <xorg-configuration> record. Take the first one that
;; comes.
(compose (lambda (extensions)
(match extensions
(() #f)
((config . _) config))))
(extend (lambda (config xorg-configuration)
(if xorg-configuration
(gdm-configuration
(inherit config)
(xorg-configuration xorg-configuration))
config)))
(default-value (gdm-configuration))
(description
"Run the GNOME Desktop Manager (GDM), a program that allows
you to log in in a graphical session, whether or not you use GNOME.")))
(define-deprecated (gdm-service #:key (gdm gdm)
(allow-empty-passwords? #t)
(x-server (xorg-wrapper)))
gdm-service-type
"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?))))
(define* (set-xorg-configuration config
#:optional
(login-manager-service-type
gdm-service-type))
"Tell the log-in manager (of type @var{login-manager-service-type}) to use
@var{config}, an <xorg-configuration> record."
(simple-service 'set-xorg-configuration
login-manager-service-type
config))
;;; xorg.scm ends here
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