;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2013, 2014, 2015 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 artwork) #:use-module (gnu services) #:use-module (gnu system linux) ; 'pam-service' #:use-module ((gnu packages base) #:select (canonical-package)) #:use-module (gnu packages guile) #:use-module (gnu packages xorg) #:use-module (gnu packages gl) #:use-module (gnu packages slim) #:use-module (gnu packages ratpoison) #:use-module (gnu packages gnustep) #:use-module (gnu packages sawfish) #:use-module (gnu packages admin) #:use-module (gnu packages bash) #:use-module (guix gexp) #:use-module (guix store) #:use-module (guix monads) #:use-module (guix derivations) #:use-module (guix records) #:use-module (srfi srfi-1) #:use-module (srfi srfi-26) #:use-module (ice-9 match) #:export (xorg-start-command %default-xsessions %ratpoison-session-type %windowmaker-session-type %sawfish-session-type session-type? session-type-name %default-slim-theme %default-slim-theme-name slim-service)) ;;; Commentary: ;;; ;;; Services that relate to the X Window System. ;;; ;;; Code: (define* (xorg-start-command #:key (guile (canonical-package guile-2.0)) (xorg-server xorg-server) (drivers '()) (resolutions '())) "Return a derivation that builds a @var{guile} script to start the X server from @var{xorg-server}. Usually the X server is started by a login manager. @var{drivers} must be either the empty list, in which case Xorg chooses a graphics driver automatically, or a list of driver names that will be tried in this order---e.g., @code{(\"modesetting\" \"vesa\")}. Likewise, when @var{resolutions} is the empty list, Xorg chooses an appropriate screen resolution; otherwise, it must be a list of resolutions---e.g., @code{((1024 768) (640 480))}." (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 (xserver.conf) (text-file* "xserver.conf" " Section \"Files\" FontPath \"" font-adobe75dpi "/share/fonts/X11/75dpi\" ModulePath \"" xf86-video-vesa "/lib/xorg/modules/drivers\" ModulePath \"" xf86-video-fbdev "/lib/xorg/modules/drivers\" ModulePath \"" xf86-video-modesetting "/lib/xorg/modules/drivers\" ModulePath \"" xf86-video-cirrus "/lib/xorg/modules/drivers\" ModulePath \"" xf86-video-intel "/lib/xorg/modules/drivers\" ModulePath \"" xf86-video-mach64 "/lib/xorg/modules/drivers\" ModulePath \"" xf86-video-nv "/lib/xorg/modules/drivers\" ModulePath \"" xf86-video-sis "/lib/xorg/modules/drivers\" ModulePath \"" xf86-input-evdev "/lib/xorg/modules/input\" ModulePath \"" xf86-input-keyboard "/lib/xorg/modules/input\" ModulePath \"" xf86-input-mouse "/lib/xorg/modules/input\" ModulePath \"" xf86-input-synaptics "/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 " (string-join (map device-section drivers) "\n") (string-join (map (cut screen-section <> resolutions) drivers) "\n"))) (mlet %store-monad ((config (xserver.conf))) (define script ;; 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")) (apply execl (string-append #$xorg-server "/bin/X") (string-append #$xorg-server "/bin/X") ;argv[0] "-logverbose" "-verbose" "-xkbdir" (string-append #$xkeyboard-config "/share/X11/xkb") "-config" #$config "-nolisten" "tcp" "-terminate" ;; Note: SLiM and other display managers add the ;; '-auth' flag by themselves. (cdr (command-line))))) (gexp->script "start-xorg" script))) (define* (xinitrc #:key (guile (canonical-package guile-2.0)) 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." (define builder #~(begin (use-modules (ice-9 match)) (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)) (st (stat command #f))) (when (and st (not (zero? (logand (stat:mode st) #o100)))) ;; The '--login' option is supported at least by Bash and zsh. (execl shell shell "--login" "-c" (string-join (cons command args)))))) (let ((home (getenv "HOME")) (session (match (command-line) ((_ x) x) (_ #$fallback-session)))) ;; First, try to run ~/.xsession. (exec-from-login-shell (string-append home "/.xsession")) ;; Then try to start the specified session. (exec-from-login-shell session)))) (gexp->script "xinitrc" builder)) ;;; ;;; SLiM log-in manager. ;;; (define-record-type* <session-type> session-type make-session-type session-type? (name session-type-name) ;string (executable session-type-executable)) ;string-valued gexp (define %windowmaker-session-type (session-type (name "WindowMaker") (executable #~(string-append #$windowmaker "/bin/wmaker")))) (define %ratpoison-session-type (session-type (name "Ratpoison") (executable #~(string-append #$ratpoison "/bin/ratpoison")))) (define %sawfish-session-type (session-type (name "Sawfish") (executable #~(string-append #$sawfish "/bin/sawfish")))) (define %default-xsessions ;; Default session types available to the log-in manager. (list %windowmaker-session-type %ratpoison-session-type)) (define (xsessions-directory sessions) "Return a directory containing SESSIONS, a list of <session-type> objects." (define builder #~(begin (mkdir #$output) (chdir #$output) (for-each (lambda (name executable) (let ((file (string-append (string-downcase name) ".desktop"))) (call-with-output-file file (lambda (port) (format port "[Desktop Entry] Name=~a Exec=~a Type=Application~%" name executable))))) '#$(map session-type-name sessions) (list #$@(map session-type-executable sessions))))) (gexp->derivation "xsessions-dir" builder)) (define %default-slim-theme ;; Theme based on work by Felipe López. #~(string-append #$%artwork-repository "/slim")) (define %default-slim-theme-name ;; This must be the name of the sub-directory in %DEFAULT-SLIM-THEME that ;; contains the actual theme files. "0.8") (define* (slim-service #:key (slim slim) (allow-empty-passwords? #t) auto-login? (default-user "") (theme %default-slim-theme) (theme-name %default-slim-theme-name) (xauth xauth) (dmd dmd) (bash bash) (sessions %default-xsessions) (auto-login-session #~(string-append #$windowmaker "/bin/wmaker")) startx) "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}. 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. Last, @var{session} is a list of @code{<session-type>} objects denoting the available session types that can be chosen from the log-in screen." (define (slim.cfg) (mlet %store-monad ((startx (or startx (xorg-start-command))) (xinitrc (xinitrc #:fallback-session auto-login-session)) (sessiondir (xsessions-directory sessions))) (text-file* "slim.cfg" " default_path /run/current-system/profile/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 " xinitrc " %session sessiondir " sessiondir " halt_cmd " dmd "/sbin/halt reboot_cmd " dmd "/sbin/reboot " (if auto-login? (string-append "auto_login yes\ndefault_user " default-user "\n") "") (if theme-name (string-append "current_theme " theme-name "\n") "")))) (mlet %store-monad ((slim.cfg (slim.cfg))) (return (service (documentation "Xorg display server") (provision '(xorg-server)) (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 "/var/run/slim.lock")) (fork+exec-command (list (string-append #$slim "/bin/slim") "-nodaemon") #:environment-variables (list (string-append "SLIM_CFGFILE=" #$slim.cfg) #$@(if theme (list #~(string-append "SLIM_THEMESDIR=" #$theme)) #~()))))) (stop #~(make-kill-destructor)) (respawn? #t) (pam-services ;; Tell PAM about 'slim'. (list (unix-pam-service "slim" #:allow-empty-passwords? allow-empty-passwords?))))))) ;;; xorg.scm ends here