nixpkgs/nixos/modules/services/x11/display-managers/kdm.nix
Eelco Dolstra 29027fd1e1 Rewrite ‘with pkgs.lib’ -> ‘with lib’
Using pkgs.lib on the spine of module evaluation is problematic
because the pkgs argument depends on the result of module
evaluation. To prevent an infinite recursion, pkgs and some of the
modules are evaluated twice, which is inefficient. Using ‘with lib’
prevents this problem.
2014-04-14 16:26:48 +02:00

157 lines
3.9 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
dmcfg = config.services.xserver.displayManager;
cfg = dmcfg.kdm;
inherit (pkgs.kde4) kdebase_workspace;
defaultConfig =
''
[Shutdown]
HaltCmd=${config.systemd.package}/sbin/shutdown -h now
RebootCmd=${config.systemd.package}/sbin/shutdown -r now
${optionalString (config.system.boot.loader.id == "grub") ''
BootManager=${if config.boot.loader.grub.version == 2 then "Grub2" else "Grub"}
''}
[X-*-Core]
Xrdb=${pkgs.xlibs.xrdb}/bin/xrdb
SessionsDirs=${dmcfg.session.desktops}
Session=${dmcfg.session.script}
FailsafeClient=${pkgs.xterm}/bin/xterm
[X-:*-Core]
ServerCmd=${dmcfg.xserverBin} ${dmcfg.xserverArgs}
# KDM calls `rm' somewhere to clean up some temporary directory.
SystemPath=${pkgs.coreutils}/bin
# The default timeout (15) is too short in a heavily loaded boot process.
ServerTimeout=60
# Needed to prevent the X server from dying on logout and not coming back:
TerminateServer=true
${optionalString (cfg.setupScript != "")
''
Setup=${cfg.setupScript}
''}
[X-*-Greeter]
HiddenUsers=root,nixbld1,nixbld2,nixbld3,nixbld4,nixbld5,nixbld6,nixbld7,nixbld8,nixbld9,nixbld10
PluginsLogin=${kdebase_workspace}/lib/kde4/kgreet_classic.so
${optionalString (cfg.themeDirectory != null)
''
UseTheme=true
Theme=${cfg.themeDirectory}
''
}
${optionalString (cfg.enableXDMCP)
''
[Xdmcp]
Enable=true
''}
'';
kdmrc = pkgs.stdenv.mkDerivation {
name = "kdmrc";
config = defaultConfig + cfg.extraConfig;
buildCommand =
''
echo "$config" > $out
# The default kdmrc would add "-nolisten tcp", and we already
# have that managed by nixos. Hence the grep.
cat ${kdebase_workspace}/share/config/kdm/kdmrc | grep -v nolisten >> $out
'';
};
in
{
###### interface
options = {
services.xserver.displayManager.kdm = {
enable = mkOption {
type = types.bool;
default = false;
description = ''
Whether to enable the KDE display manager.
'';
};
enableXDMCP = mkOption {
type = types.bool;
default = false;
description = ''
Whether to enable XDMCP, which allows remote logins.
'';
};
themeDirectory = mkOption {
type = types.nullOr types.str;
default = null;
description = ''
The path to a KDM theme directory. This theme
will be used by the KDM greeter.
'';
};
setupScript = mkOption {
type = types.lines;
default = "";
description = ''
The path to a KDM setup script. This script is run as root just
before KDM starts. Can be used for setting up
monitors with xrandr, for example.
'';
};
extraConfig = mkOption {
type = types.lines;
default = "";
description = ''
Options appended to <filename>kdmrc</filename>, the
configuration file of KDM.
'';
};
};
};
###### implementation
config = mkIf cfg.enable {
services.xserver.displayManager.slim.enable = false;
services.xserver.displayManager.job =
{ execCmd =
''
mkdir -m 0755 -p /var/lib/kdm
chown kdm /var/lib/kdm
${(optionalString (config.system.boot.loader.id == "grub" && config.system.build.grub != null) "PATH=${config.system.build.grub}/sbin:$PATH ") +
"KDEDIRS=/run/current-system/sw exec ${kdebase_workspace}/bin/kdm -config ${kdmrc} -nodaemon"}
'';
logsXsession = true;
};
security.pam.services.kde = { allowNullPassword = true; startSession = true; };
users.extraUsers = singleton
{ name = "kdm";
uid = config.ids.uids.kdm;
description = "KDM user";
};
};
}