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https://github.com/NixOS/nixpkgs.git
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77e081bb2b
Currently lxqt is a desktop environment that's compiled against qt514. To avoid possible issues (#101369), we (hopefully) use the same qt version as the desktop environment at hand. LXQT should move to qt515, and for the long term the correct qt version should be inherited by the sddm module.
286 lines
8.1 KiB
Nix
286 lines
8.1 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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xcfg = config.services.xserver;
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dmcfg = xcfg.displayManager;
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cfg = dmcfg.sddm;
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xEnv = config.systemd.services.display-manager.environment;
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sddm = if config.services.xserver.desktopManager.lxqt.enable then
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# TODO: Move lxqt to libsForQt515
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pkgs.libsForQt514.sddm
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else
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pkgs.libsForQt5.sddm
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;
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xserverWrapper = pkgs.writeScript "xserver-wrapper" ''
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#!/bin/sh
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${concatMapStrings (n: "export ${n}=\"${getAttr n xEnv}\"\n") (attrNames xEnv)}
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exec systemd-cat -t xserver-wrapper ${dmcfg.xserverBin} ${toString dmcfg.xserverArgs} "$@"
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'';
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Xsetup = pkgs.writeScript "Xsetup" ''
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#!/bin/sh
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${cfg.setupScript}
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${dmcfg.setupCommands}
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'';
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Xstop = pkgs.writeScript "Xstop" ''
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#!/bin/sh
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${cfg.stopScript}
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'';
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cfgFile = pkgs.writeText "sddm.conf" ''
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[General]
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HaltCommand=/run/current-system/systemd/bin/systemctl poweroff
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RebootCommand=/run/current-system/systemd/bin/systemctl reboot
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${optionalString cfg.autoNumlock ''
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Numlock=on
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''}
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[Theme]
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Current=${cfg.theme}
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ThemeDir=/run/current-system/sw/share/sddm/themes
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FacesDir=/run/current-system/sw/share/sddm/faces
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[Users]
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MaximumUid=${toString config.ids.uids.nixbld}
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HideUsers=${concatStringsSep "," dmcfg.hiddenUsers}
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HideShells=/run/current-system/sw/bin/nologin
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[X11]
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MinimumVT=${toString (if xcfg.tty != null then xcfg.tty else 7)}
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ServerPath=${xserverWrapper}
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XephyrPath=${pkgs.xorg.xorgserver.out}/bin/Xephyr
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SessionCommand=${dmcfg.sessionData.wrapper}
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SessionDir=${dmcfg.sessionData.desktops}/share/xsessions
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XauthPath=${pkgs.xorg.xauth}/bin/xauth
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DisplayCommand=${Xsetup}
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DisplayStopCommand=${Xstop}
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EnableHidpi=${boolToString cfg.enableHidpi}
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[Wayland]
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EnableHidpi=${boolToString cfg.enableHidpi}
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SessionDir=${dmcfg.sessionData.desktops}/share/wayland-sessions
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${optionalString dmcfg.autoLogin.enable ''
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[Autologin]
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User=${dmcfg.autoLogin.user}
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Session=${autoLoginSessionName}.desktop
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Relogin=${boolToString cfg.autoLogin.relogin}
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''}
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${cfg.extraConfig}
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'';
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autoLoginSessionName = dmcfg.sessionData.autologinSession;
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in
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{
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imports = [
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(mkRemovedOptionModule [ "services" "xserver" "displayManager" "sddm" "themes" ]
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"Set the option `services.xserver.displayManager.sddm.package' instead.")
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(mkRenamedOptionModule [ "services" "xserver" "displayManager" "sddm" "autoLogin" "enable" ] [
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"services"
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"xserver"
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"displayManager"
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"autoLogin"
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"enable"
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])
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(mkRenamedOptionModule [ "services" "xserver" "displayManager" "sddm" "autoLogin" "user" ] [
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"services"
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"xserver"
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"displayManager"
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"autoLogin"
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"user"
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])
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];
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options = {
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services.xserver.displayManager.sddm = {
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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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Whether to enable sddm as the display manager.
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'';
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};
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enableHidpi = mkOption {
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type = types.bool;
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default = true;
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description = ''
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Whether to enable automatic HiDPI mode.
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</para>
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<para>
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Versions up to 0.17 are broken so this only works from 0.18 onwards.
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'';
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};
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extraConfig = mkOption {
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type = types.lines;
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default = "";
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example = ''
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[Autologin]
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User=john
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Session=plasma.desktop
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'';
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description = ''
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Extra lines appended to the configuration of SDDM.
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'';
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};
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theme = mkOption {
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type = types.str;
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default = "";
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description = ''
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Greeter theme to use.
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'';
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};
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autoNumlock = mkOption {
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type = types.bool;
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default = false;
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description = ''
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Enable numlock at login.
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'';
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};
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setupScript = mkOption {
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type = types.str;
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default = "";
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example = ''
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# workaround for using NVIDIA Optimus without Bumblebee
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xrandr --setprovideroutputsource modesetting NVIDIA-0
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xrandr --auto
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'';
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description = ''
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A script to execute when starting the display server. DEPRECATED, please
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use <option>services.xserver.displayManager.setupCommands</option>.
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'';
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};
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stopScript = mkOption {
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type = types.str;
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default = "";
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description = ''
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A script to execute when stopping the display server.
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'';
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};
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# Configuration for automatic login specific to SDDM
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autoLogin.relogin = mkOption {
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type = types.bool;
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default = false;
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description = ''
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If true automatic login will kick in again on session exit (logout), otherwise it
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will only log in automatically when the display-manager is started.
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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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assertions = [
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{ assertion = xcfg.enable;
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message = ''
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SDDM requires services.xserver.enable to be true
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'';
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}
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{ assertion = dmcfg.autoLogin.enable -> autoLoginSessionName != null;
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message = ''
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SDDM auto-login requires that services.xserver.displayManager.defaultSession is set.
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'';
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}
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];
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services.xserver.displayManager.job = {
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environment = {
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# Load themes from system environment
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QT_PLUGIN_PATH = "/run/current-system/sw/" + pkgs.qt5.qtbase.qtPluginPrefix;
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QML2_IMPORT_PATH = "/run/current-system/sw/" + pkgs.qt5.qtbase.qtQmlPrefix;
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};
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execCmd = "exec /run/current-system/sw/bin/sddm";
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};
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security.pam.services = {
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sddm = {
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allowNullPassword = true;
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startSession = true;
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};
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sddm-greeter.text = ''
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auth required pam_succeed_if.so audit quiet_success user = sddm
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auth optional pam_permit.so
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account required pam_succeed_if.so audit quiet_success user = sddm
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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 = sddm
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session required pam_env.so conffile=${config.system.build.pamEnvironment} readenv=0
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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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sddm-autologin.text = ''
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auth requisite pam_nologin.so
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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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account include sddm
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password include sddm
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session include sddm
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'';
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};
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users.users.sddm = {
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createHome = true;
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home = "/var/lib/sddm";
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group = "sddm";
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uid = config.ids.uids.sddm;
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};
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environment.etc."sddm.conf".source = cfgFile;
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environment.pathsToLink = [
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"/share/sddm"
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];
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users.groups.sddm.gid = config.ids.gids.sddm;
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environment.systemPackages = [ sddm ];
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services.dbus.packages = [ sddm ];
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# To enable user switching, allow sddm to allocate TTYs/displays dynamically.
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services.xserver.tty = null;
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services.xserver.display = null;
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systemd.tmpfiles.rules = [
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# Prior to Qt 5.9.2, there is a QML cache invalidation bug which sometimes
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# strikes new Plasma 5 releases. If the QML cache is not invalidated, SDDM
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# will segfault without explanation. We really tore our hair out for awhile
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# before finding the bug:
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# https://bugreports.qt.io/browse/QTBUG-62302
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# We work around the problem by deleting the QML cache before startup.
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# This was supposedly fixed in Qt 5.9.2 however it has been reported with
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# 5.10 and 5.11 as well. The initial workaround was to delete the directory
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# in the Xsetup script but that doesn't do anything.
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# Instead we use tmpfiles.d to ensure it gets wiped.
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# This causes a small but perceptible delay when SDDM starts.
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"e ${config.users.users.sddm.home}/.cache - - - 0"
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];
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};
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}
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