nixpkgs/upstart-jobs/xserver.nix

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{ stdenv, writeText, lib, xorg, mesa, xterm, slim, gnome
, compiz, feh
, config
, # Virtual console for the X server.
tty ? 7
, # X display number.
display ? 0
, # List of font directories.
fontDirectories
}:
let
getCfg = option: config.get ["services" "xserver" option];
optional = condition: x: if condition then [x] else [];
# Get a bunch of user settings.
videoDriver = getCfg "videoDriver";
resolutions = map (res: "\"${toString res.x}x${toString res.y}\"") (getCfg "resolutions");
windowManager = getCfg "windowManager";
sessionType = getCfg "sessionType";
sessionStarter = getCfg "sessionStarter";
sessionCmd =
if sessionType == "" then sessionStarter else
if sessionType == "xterm" then "${xterm}/bin/xterm -ls" else
if sessionType == "gnome" then "${gnome.gnometerminal}/bin/gnome-terminal" else
abort ("unknown session type "+ sessionType);
modules = [
xorg.xorgserver
xorg.xf86inputkeyboard
xorg.xf86inputmouse
]
++ optional (videoDriver == "vesa") xorg.xf86videovesa
++ optional (videoDriver == "i810") xorg.xf86videoi810;
configFile = stdenv.mkDerivation {
name = "xserver.conf";
src = ./xserver.conf;
inherit fontDirectories videoDriver resolutions;
buildCommand = "
buildCommand= # urgh, don't substitute this
export fontPaths=
for i in $fontDirectories; do
if test \"\${i:0:\${#NIX_STORE}}\" == \"$NIX_STORE\"; then
for j in $(find $i -name fonts.dir); do
fontPaths=\"\${fontPaths}FontPath \\\"$(dirname $j)\\\"\\n\"
done
fi
done
export modulePaths=
for i in $(find ${toString modules} -type d); do
if ls $i/*.so 2> /dev/null; then
modulePaths=\"\${modulePaths}ModulePath \\\"$i\\\"\\n\"
fi
done
substituteAll $src $out
";
};
clientScript = writeText "xclient" "
exec > $HOME/.Xerrors 2>&1
### Start a window manager.
${if windowManager == "twm" then "
${xorg.twm}/bin/twm &
"
else if windowManager == "metacity" then "
# !!! Hack: load the schemas for Metacity.
GCONF_CONFIG_SOURCE=xml::~/.gconf ${gnome.GConf}/bin/gconftool-2 \\
--makefile-install-rule ${gnome.metacity}/etc/gconf/schemas/*.schemas
${gnome.metacity}/bin/metacity &
"
else if windowManager == "compiz" then "
# !!! Hack: load the schemas for Compiz.
GCONF_CONFIG_SOURCE=xml::~/.gconf ${gnome.GConf}/bin/gconftool-2 \\
--makefile-install-rule ${compiz}/etc/gconf/schemas/*.schemas
# !!! Hack: turn on most Compiz modules.
${gnome.GConf}/bin/gconftool-2 -t list --list-type=string \\
--set /apps/compiz/general/allscreens/options/active_plugins \\
[gconf,png,decoration,wobbly,fade,minimize,move,resize,cube,switcher,rotate,place,scale,water]
# Start Compiz and the GTK-style window decorator.
${compiz}/bin/compiz gconf &
${compiz}/bin/gtk-window-decorator &
"
else abort ("unknown window manager "+ windowManager)}
### Show a background image.
if test -e $HOME/.background-image; then
${feh}/bin/feh --bg-scale $HOME/.background-image
fi
### Start a 'session' (right now, this is just a terminal).
# !!! yes, this means that you 'log out' by killing the X server.
while ${sessionCmd}; do
sleep 1
done
"; # */ <- hack to fix syntax highlighting
xserverArgs = [
"-ac"
"-nolisten tcp"
"-terminate"
"-logfile" "/var/log/X.${toString display}.log"
"-config ${configFile}"
":${toString display}" "vt${toString tty}"
];
# Note: lines must not be indented.
slimConfig = writeText "slim.cfg" "
xauth_path ${xorg.xauth}/bin/xauth
default_xserver ${xorg.xorgserver}/bin/X
xserver_arguments ${toString xserverArgs}
login_cmd exec ${stdenv.bash}/bin/sh ${clientScript}
";
in
rec {
name = "xserver";
extraPath = [
xorg.xrandr
feh
]
++ optional (windowManager == "twm") [
xorg.twm
]
++ optional (windowManager == "metacity") [
gnome.metacity
]
++ optional (windowManager == "compiz") [
compiz
]
++ optional (sessionType == "xterm") [
xterm
]
++ optional (sessionType == "gnome") [
gnome.gnometerminal
gnome.GConf
gnome.gconfeditor
];
job = "
#start on network-interfaces
start script
rm -f /var/state/opengl-driver
${if getCfg "driSupport"
then "ln -sf ${mesa} /var/state/opengl-driver"
else ""
}
end script
env SLIM_CFGFILE=${slimConfig}
env FONTCONFIG_FILE=/etc/fonts/fonts.conf # !!! cleanup
${if getCfg "driSupport"
then "env XORG_DRI_DRIVER_PATH=${mesa}/lib/modules/dri"
else ""
}
exec ${slim}/bin/slim
";
}