;;; GNU Guix --- Functional package management for GNU ;;; Copyright © 2013, 2014, 2015 Ludovic Courtès ;;; Copyright © 2015 Sou Bunnbu ;;; ;;; 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 . (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 gnustep) #: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-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-nouveau "/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 (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))))) (let* ((home (getenv "HOME")) (xsession-file (string-append home "/.xsession")) (session (match (command-line) ((_ x) x) (_ #$fallback-session)))) (if (file-exists? xsession-file) ;; Run ~/.xsession when it exists. (exec-from-login-shell xsession-file session) ;; Otherwise, start the specified session. (exec-from-login-shell session))))) (gexp->script "xinitrc" builder)) ;;; ;;; SLiM log-in manager. ;;; (define %default-slim-theme ;; Theme based on work by Felipe López. #~(string-append #$%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.x") (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) (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}. @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." (define (slim.cfg) (mlet %store-monad ((startx (or startx (xorg-start-command))) (xinitrc (xinitrc #:fallback-session auto-login-session))) (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 /run/current-system/profile/share/xsessions session_msg session (F1 to change): 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