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* Cleaned up the display manager module a bit.
svn path=/nixos/trunk/; revision=17012
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22693ae44e
commit
0156cfbe9e
@ -1,74 +1,82 @@
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{pkgs, config, ...}:
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# This module declares the options to define a *display manager*, the
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# program responsible for handling X logins (such as xdm, kdm, gdb, or
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# SLiM). The display manager allows the user to select a *session
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# type*. When the user logs in, the display manager starts the
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# *session script* ("xsession" below) to launch the selected session
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# type. The session type defines two things: the *desktop manager*
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# (e.g., KDE, Gnome or a plain xterm), and optionally the *window
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# manager* (e.g. kwin or twm).
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{ config, pkgs, ... }:
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with pkgs.lib;
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let
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inherit (pkgs.lib) mkOption mergeOneOption optionals filter concatMap concatMapStrings;
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cfg = config.services.xserver;
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xorg = pkgs.xorg;
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# file provided by services.xserver.displayManager.session.script
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xsession = wm: dm: pkgs.writeScript "xsession" ''
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xsession = wm: dm: pkgs.writeScript "xsession"
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''
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#! /bin/sh
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exec > $HOME/.xsession-errors 2>&1
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source /etc/profile
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exec > $HOME/.Xerrors 2>&1
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### Load X defaults.
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if test -e ~/.Xdefaults; then
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${xorg.xrdb}/bin/xrdb -merge ~/.Xdefaults
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fi
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${if cfg.startSSHAgent then ''
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${optionalString cfg.startSSHAgent ''
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### Start the SSH agent.
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export SSH_ASKPASS=${pkgs.x11_ssh_askpass}/libexec/x11-ssh-askpass
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eval $(${pkgs.openssh}/bin/ssh-agent)
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'' else ""}
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''}
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### Allow user to override system-wide configuration
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if test -f ~/.xsession; then
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source ~/.xsession;
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source ~/.xsession
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fi
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# this script expect to have as first argument the following input
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# "desktop-manager + window-manager".
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arg="$1"
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# The first argument of this script is the session type
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sessionType="$1"
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# extract the window manager.
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# The session type "<desktop-manager> + <window-manager>", so
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# extract those.
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windowManager="''${arg##* + }"
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: ''${windowManager:=${cfg.windowManager.default}}
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# extract the desktop manager.
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desktopManager="''${arg% + *}"
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: ''${desktopManager:=${cfg.desktopManager.default}}
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# used to restart the xserver.
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waitPID=0
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# handle window manager starts.
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# Start the window manager.
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case $windowManager in
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${concatMapStrings (s: "
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${concatMapStrings (s: ''
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(${s.name})
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${s.start}
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;;
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") wm}
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'') wm}
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(*) echo "$0: Window manager '$windowManager' not found.";;
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esac
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# handle desktop manager starts.
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# Start the desktop manager.
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case $desktopManager in
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${concatMapStrings (s: "
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${concatMapStrings (s: ''
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(${s.name})
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${s.start}
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;;
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") dm}
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'') dm}
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(*) echo "$0: Desktop manager '$desktopManager' not found.";;
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esac
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test "$waitPID" != 0 && wait "$waitPID"
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exit
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test -n "$waitPID" && wait "$waitPID"
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exit 0
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'';
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mkDesktops = names: pkgs.runCommand "desktops" {} ''
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mkDesktops = names: pkgs.runCommand "desktops" {}
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''
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ensureDir $out
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${concatMapStrings (n: ''
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cat - > "$out/${n}.desktop" << EODESKTOP
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@ -86,41 +94,28 @@ let
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in
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{
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# list of display managers.
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require = [
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./kdm.nix
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./slim.nix
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];
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services = {
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xserver = {
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displayManager = {
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imports = [ ./kdm.nix ./slim.nix ];
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options = {
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services.xserver.displayManager = {
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xauthBin = mkOption {
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default = "${xorg.xauth}/bin/xauth";
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description = "
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Path to the xauth binary used by display managers.
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";
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description = "Path to the <command>xauth</command> program used by display managers.";
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};
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xserverBin = mkOption {
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default = "${xorg.xorgserver}/bin/X";
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description = "
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Path to the xserver binary used by display managers.
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";
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description = "Path to the X server used by display managers.";
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};
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xserverArgs = mkOption {
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default = [];
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example = [
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"-ac"
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"-logverbose"
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"-nolisten tcp"
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];
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description = "
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List of arguments which have to be pass to when
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the display manager start the xserver.
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";
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example = [ "-ac" "-logverbose" "-nolisten tcp" ];
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description = "List of arguments for the X server.";
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apply = toString;
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};
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@ -137,10 +132,10 @@ in
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}
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];
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description = ''
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List of session supported with the command used to start each
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List of sessions supported with the command used to start each
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session. Each session script can set the
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<varname>waitPID</varname> shell variable to make this script
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waiting until the end of the user session. Each script is used
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wait until the end of the user session. Each script is used
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to define either a windows manager or a desktop manager. These
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can be differentiated by setting the attribute
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<varname>manage</varname> either to <literal>"window"</literal>
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@ -161,23 +156,35 @@ in
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job = mkOption {
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default = {};
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example = {
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preStart = ''
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rm -f /var/log/slim.log
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'';
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environment = { SLIM_CFGFILE = /etc/slim.conf; };
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execCmd = "${pkgs.slim}/bin/slim";
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};
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description = "
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List of arguments which have to be pass to when
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the display manager start the xserver.
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";
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type = types.optionSet;
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merge = mergeOneOption;
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description = "This option defines how to start the display manager.";
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options = {
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preStart = mkOption {
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default = "";
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example = "rm -f /var/log/my-display-manager.log";
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description = "Script executed before the display manager is started.";
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};
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execCmd = mkOption {
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example = "${pkgs.slim}/bin/slim";
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description = "Command to start the display manager.";
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};
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environment = mkOption {
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default = {};
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example = { SLIM_CFGFILE = /etc/slim.conf; };
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description = "Additional environment variables needed by the display manager.";
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};
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};
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};
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};
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};
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}
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config = mkIf cfg.enable {
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services.xserver.displayManager.job =
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{ beforeScript = "";
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environment = {};
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execCmd = "${kdebase_workspace}/bin/kdm -config ${kdmrc}";
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{ execCmd = "${kdebase_workspace}/bin/kdm -config ${kdmrc}";
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};
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security.pam.services = [ { name = "kde"; localLogin = true; ckHack = true; } ];
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else ""
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}
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${cfg.displayManager.job.beforeScript}
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${cfg.displayManager.job.preStart}
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rm -f /tmp/.X0-lock
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'';
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