guix-play/gnu/services/xorg.scm
Ludovic Courtès e87f0591f3 monads: Move '%store-monad' and related procedures where they belong.
This turns (guix monads) into a generic module for monads, and moves the
store monad and related monadic procedures in their corresponding
module.

* guix/monads.scm (store-return, store-bind, %store-monad, store-lift,
  text-file, interned-file, package-file, package->derivation,
  package->cross-derivation, origin->derivation, imported-modules,
  compiled, modules, built-derivations, run-with-store): Move to...
* guix/store.scm (store-return, store-bind, %store-monad, store-lift,
  text-file, interned-file): ... here.
  (%guile-for-build): New variable.
  (run-with-store): Moved from monads.scm.  Remove default value for
  #:guile-for-build.
* guix/packages.scm (default-guile): Export.
  (set-guile-for-build): New procedure.
  (package-file, package->derivation, package->cross-derivation,
  origin->derivation): Moved from monads.scm.
* guix/derivations.scm (%guile-for-build): Remove.
  (imported-modules): Rename to...
  (%imported-modules): ... this.
  (compiled-modules): Rename to...
  (%compiled-modules): ... this.
  (built-derivations, imported-modules, compiled-modules): New
  procedures.
* gnu/services/avahi.scm, gnu/services/base.scm, gnu/services/dbus.scm,
  gnu/services/dmd.scm, gnu/services/networking.scm,
  gnu/services/ssh.scm, gnu/services/xorg.scm, gnu/system/install.scm,
  gnu/system/linux-initrd.scm, gnu/system/shadow.scm, guix/download.scm,
  guix/gexp.scm, guix/git-download.scm, guix/profiles.scm,
  guix/svn-download.scm, tests/monads.scm: Adjust imports accordingly.
* guix/monad-repl.scm (default-guile-derivation): New procedure.
  (store-monad-language, run-in-store): Use it.
* build-aux/hydra/gnu-system.scm (qemu-jobs): Add explicit
  'set-guile-for-build' call.
* guix/scripts/archive.scm (derivation-from-expression): Likewise.
* guix/scripts/build.scm (options/resolve-packages): Likewise.
* guix/scripts/environment.scm (guix-environment): Likewise.
* guix/scripts/system.scm (guix-system): Likewise.
* doc/guix.texi (The Store Monad): Adjust module names accordingly.
2015-01-14 13:34:52 +01:00

291 lines
11 KiB
Scheme
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

;;; 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 admin)
#:use-module (gnu packages bash)
#:use-module (guix gexp)
#:use-module (guix store)
#:use-module (guix monads)
#:use-module (guix derivations)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (ice-9 match)
#:export (xorg-start-command
%default-xsessions
%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)
(_ #$fallback-session))))
;; First, try to run ~/.xsession.
(exec-from-login-shell (string-append home "/.xsession"))
;; Then try to start the specified session.
(exec-from-login-shell session))))
(gexp->script "xinitrc" builder))
;;;
;;; SLiM log-in manager.
;;;
(define %default-xsessions
;; Default xsessions available for log-in manager, representing as a list of
;; monadic desktop entries.
(list (text-file* "wmaker.desktop" "
[Desktop Entry]
Name=Window Maker
Exec=" windowmaker "/bin/wmaker
Type=Application
")
(text-file* "ratpoison.desktop" "
[Desktop Entry]
Name=Ratpoison
Exec=" ratpoison "/bin/ratpoison
Type=Application
")))
(define (xsessions-directory sessions)
"Return a directory containing SESSIONS, which should be a list of monadic
desktop entries."
(mlet %store-monad ((sessions (sequence %store-monad sessions)))
(define builder
#~(begin
(mkdir #$output)
(for-each (lambda (session)
(symlink session (string-append #$output "/"
(basename session))))
'#$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."
(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