2014-04-02 17:21:00 +01:00
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{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.xserver.displayManager;
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2017-09-24 12:15:50 +01:00
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gdm = pkgs.gnome3.gdm;
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2014-04-02 17:21:00 +01:00
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2018-06-30 08:33:45 +01:00
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xSessionWrapper = if (cfg.setupCommands == "") then null else
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pkgs.writeScript "gdm-x-session-wrapper" ''
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#!${pkgs.bash}/bin/bash
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${cfg.setupCommands}
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exec "$@"
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'';
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2019-05-09 17:04:34 +01:00
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# Solves problems like:
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# https://wiki.archlinux.org/index.php/Talk:Bluetooth_headset#GDMs_pulseaudio_instance_captures_bluetooth_headset
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# Instead of blacklisting plugins, we use Fedora's PulseAudio configuration for GDM:
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# https://src.fedoraproject.org/rpms/gdm/blob/master/f/default.pa-for-gdm
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pulseConfig = pkgs.writeText "default.pa" ''
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load-module module-device-restore
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load-module module-card-restore
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load-module module-udev-detect
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load-module module-native-protocol-unix
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load-module module-default-device-restore
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load-module module-rescue-streams
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load-module module-always-sink
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load-module module-intended-roles
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load-module module-suspend-on-idle
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load-module module-position-event-sounds
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'';
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2014-04-02 17:21:00 +01:00
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in
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{
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###### interface
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options = {
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services.xserver.displayManager.gdm = {
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2015-08-27 17:11:09 +01:00
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enable = mkEnableOption ''
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2015-08-28 09:36:12 +01:00
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GDM as the display manager.
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2015-11-11 05:52:47 +00:00
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<emphasis>GDM in NixOS is not well-tested with desktops other
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than GNOME, so use with caution, as it could render the
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system unusable.</emphasis>
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2015-08-27 17:11:09 +01:00
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'';
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2015-09-14 09:33:44 +01:00
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debug = mkEnableOption ''
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debugging messages in GDM
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'';
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2015-08-27 17:11:09 +01:00
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autoLogin = mkOption {
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default = {};
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2015-08-28 04:55:56 +01:00
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description = ''
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Auto login configuration attrset.
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'';
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2015-08-27 17:11:09 +01:00
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type = types.submodule {
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options = {
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enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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2015-09-03 21:11:25 +01:00
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Automatically log in as the sepecified <option>autoLogin.user</option>.
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2015-08-27 17:11:09 +01:00
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'';
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};
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user = mkOption {
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type = types.nullOr types.str;
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default = null;
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description = ''
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User to be used for the autologin.
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'';
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};
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delay = mkOption {
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type = types.int;
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default = 0;
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description = ''
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Seconds of inactivity after which the autologin will be performed.
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'';
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};
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};
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};
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2014-04-02 17:21:00 +01:00
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};
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2017-05-07 21:27:02 +01:00
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wayland = mkOption {
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default = true;
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description = ''
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Allow GDM run on Wayland instead of Xserver
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'';
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type = types.bool;
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};
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2014-04-02 17:21:00 +01:00
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};
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};
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###### implementation
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config = mkIf cfg.gdm.enable {
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2015-09-03 21:22:00 +01:00
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assertions = [
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2015-09-05 09:21:43 +01:00
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{ assertion = cfg.gdm.autoLogin.enable -> cfg.gdm.autoLogin.user != null;
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2015-09-03 21:22:00 +01:00
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message = "GDM auto-login requires services.xserver.displayManager.gdm.autoLogin.user to be set";
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}
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];
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2018-08-20 13:25:25 +01:00
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services.xserver.displayManager.lightdm.enable = false;
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2014-04-02 17:21:00 +01:00
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2018-06-30 00:58:35 +01:00
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users.users.gdm =
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2014-04-02 17:21:00 +01:00
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{ name = "gdm";
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uid = config.ids.uids.gdm;
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group = "gdm";
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home = "/run/gdm";
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description = "GDM user";
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};
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2018-06-30 00:58:35 +01:00
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users.groups.gdm.gid = config.ids.gids.gdm;
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2014-04-02 17:21:00 +01:00
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2016-12-04 13:48:47 +00:00
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# GDM needs different xserverArgs, presumable because using wayland by default.
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services.xserver.tty = null;
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services.xserver.display = null;
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2017-05-07 22:01:20 +01:00
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services.xserver.verbose = null;
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2016-12-04 13:48:47 +00:00
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2014-04-02 17:21:00 +01:00
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services.xserver.displayManager.job =
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2015-08-28 04:55:56 +01:00
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{
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2014-04-02 17:21:00 +01:00
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environment = {
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2016-12-04 13:48:47 +00:00
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GDM_X_SERVER_EXTRA_ARGS = toString
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(filter (arg: arg != "-terminate") cfg.xserverArgs);
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2018-09-08 06:58:17 +01:00
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XDG_DATA_DIRS = "${cfg.session.desktops}/share/";
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2015-02-10 16:26:06 +00:00
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# Find the mouse
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2017-09-24 12:15:50 +01:00
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XCURSOR_PATH = "~/.icons:${pkgs.gnome3.adwaita-icon-theme}/share/icons";
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2018-06-30 08:33:45 +01:00
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} // optionalAttrs (xSessionWrapper != null) {
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# Make GDM use this wrapper before running the session, which runs the
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# configured setupCommands. This relies on a patched GDM which supports
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# this environment variable.
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GDM_X_SESSION_WRAPPER = "${xSessionWrapper}";
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2014-04-02 17:21:00 +01:00
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};
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2015-04-10 16:02:57 +01:00
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execCmd = "exec ${gdm}/bin/gdm";
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2019-05-09 17:04:34 +01:00
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preStart = optionalString config.hardware.pulseaudio.enable ''
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mkdir -p /run/gdm/.config/pulse
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ln -sf ${pulseConfig} /run/gdm/.config/pulse/default.pa
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chown -R gdm:gdm /run/gdm/.config
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'';
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2014-04-02 17:21:00 +01:00
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};
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# Because sd_login_monitor_new requires /run/systemd/machines
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systemd.services.display-manager.wants = [ "systemd-machined.service" ];
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2017-06-25 17:59:23 +01:00
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systemd.services.display-manager.after = [
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"rc-local.service"
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"systemd-machined.service"
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"systemd-user-sessions.service"
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];
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systemd.services.display-manager.serviceConfig = {
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2017-08-28 15:56:04 +01:00
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# Restart = "always"; - already defined in xserver.nix
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KillMode = "mixed";
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IgnoreSIGPIPE = "no";
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BusName = "org.gnome.DisplayManager";
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StandardOutput = "syslog";
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StandardError = "inherit";
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2017-06-25 17:59:23 +01:00
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};
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2014-04-02 17:21:00 +01:00
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2018-02-25 02:23:58 +00:00
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systemd.services.display-manager.path = [ pkgs.gnome3.gnome-session ];
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2014-04-02 17:21:00 +01:00
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2018-04-30 17:15:28 +01:00
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# Allow choosing an user account
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services.accounts-daemon.enable = true;
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2014-04-02 17:21:00 +01:00
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services.dbus.packages = [ gdm ];
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2016-10-03 16:11:24 +01:00
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systemd.user.services.dbus.wantedBy = [ "default.target" ];
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2014-04-02 17:21:00 +01:00
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2018-10-02 11:41:25 +01:00
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programs.dconf.profiles.gdm = pkgs.writeText "dconf-gdm-profile" ''
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system-db:local
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${gdm}/share/dconf/profile/gdm
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'';
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2014-04-02 17:21:00 +01:00
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2015-09-14 09:48:00 +01:00
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# Use AutomaticLogin if delay is zero, because it's immediate.
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# Otherwise with TimedLogin with zero seconds the prompt is still
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# presented and there's a little delay.
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2015-08-27 17:11:09 +01:00
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environment.etc."gdm/custom.conf".text = ''
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[daemon]
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2017-05-07 21:27:02 +01:00
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WaylandEnable=${if cfg.gdm.wayland then "true" else "false"}
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2015-09-14 09:48:00 +01:00
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${optionalString cfg.gdm.autoLogin.enable (
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if cfg.gdm.autoLogin.delay > 0 then ''
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TimedLoginEnable=true
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TimedLogin=${cfg.gdm.autoLogin.user}
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TimedLoginDelay=${toString cfg.gdm.autoLogin.delay}
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'' else ''
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AutomaticLoginEnable=true
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AutomaticLogin=${cfg.gdm.autoLogin.user}
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'')
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}
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2015-08-27 17:11:09 +01:00
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[security]
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[xdmcp]
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[greeter]
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[chooser]
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[debug]
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2015-09-14 09:33:44 +01:00
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${optionalString cfg.gdm.debug "Enable=true"}
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2015-08-27 17:11:09 +01:00
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'';
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2018-07-24 15:52:49 +01:00
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environment.etc."gdm/Xsession".source = config.services.xserver.displayManager.session.wrapper;
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2018-07-23 00:34:53 +01:00
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2014-04-02 17:21:00 +01:00
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# GDM LFS PAM modules, adapted somehow to NixOS
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security.pam.services = {
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gdm-launch-environment.text = ''
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auth required pam_succeed_if.so audit quiet_success user = gdm
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auth optional pam_permit.so
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account required pam_succeed_if.so audit quiet_success user = gdm
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account sufficient pam_unix.so
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password required pam_deny.so
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session required pam_succeed_if.so audit quiet_success user = gdm
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session required pam_env.so envfile=${config.system.build.pamEnvironment}
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session optional ${pkgs.systemd}/lib/security/pam_systemd.so
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session optional pam_keyinit.so force revoke
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session optional pam_permit.so
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'';
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gdm-password.text = ''
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2017-01-13 16:16:55 +00:00
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auth substack login
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account include login
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password substack login
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session include login
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2014-04-02 17:21:00 +01:00
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'';
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gdm-autologin.text = ''
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2017-01-13 16:16:55 +00:00
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auth requisite pam_nologin.so
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2014-04-02 17:21:00 +01:00
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2017-01-13 16:16:55 +00:00
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auth required pam_succeed_if.so uid >= 1000 quiet
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auth required pam_permit.so
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2014-04-02 17:21:00 +01:00
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2017-01-13 16:16:55 +00:00
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account sufficient pam_unix.so
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2014-04-02 17:21:00 +01:00
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2017-01-13 16:16:55 +00:00
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password requisite pam_unix.so nullok sha512
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2014-04-02 17:21:00 +01:00
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2017-01-13 16:16:55 +00:00
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session optional pam_keyinit.so revoke
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session include login
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2014-04-02 17:21:00 +01:00
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'';
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};
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};
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}
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