132 lines
3.7 KiB
Nix
132 lines
3.7 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.greetd;
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tty = "tty${toString cfg.vt}";
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settingsFormat = pkgs.formats.toml { };
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in
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{
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options.services.greetd = {
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enable = mkEnableOption "greetd, a minimal and flexible login manager daemon";
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package = mkPackageOption pkgs [ "greetd" "greetd" ] { };
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settings = mkOption {
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type = settingsFormat.type;
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example = literalExpression ''
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{
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default_session = {
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command = "''${pkgs.greetd.greetd}/bin/agreety --cmd sway";
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};
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}
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'';
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description = ''
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greetd configuration ([documentation](https://man.sr.ht/~kennylevinsen/greetd/))
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as a Nix attribute set.
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'';
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};
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greeterManagesPlymouth = mkOption {
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type = types.bool;
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internal = true;
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default = false;
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description = ''
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Don't configure the greetd service to wait for Plymouth to exit.
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Enable this if the greeter you're using can manage Plymouth itself to provide a smoother handoff.
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'';
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};
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vt = mkOption {
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type = types.int;
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default = 1;
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description = ''
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The virtual console (tty) that greetd should use. This option also disables getty on that tty.
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'';
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};
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restart = mkOption {
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type = types.bool;
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default = !(cfg.settings ? initial_session);
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defaultText = literalExpression "!(config.services.greetd.settings ? initial_session)";
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description = ''
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Whether to restart greetd when it terminates (e.g. on failure).
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This is usually desirable so a user can always log in, but should be disabled when using 'settings.initial_session' (autologin),
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because every greetd restart will trigger the autologin again.
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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.greetd.settings.terminal.vt = mkDefault cfg.vt;
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services.greetd.settings.default_session.user = mkDefault "greeter";
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security.pam.services.greetd = {
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allowNullPassword = true;
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startSession = true;
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enableGnomeKeyring = mkDefault config.services.gnome.gnome-keyring.enable;
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};
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# This prevents nixos-rebuild from killing greetd by activating getty again
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systemd.services."autovt@${tty}".enable = false;
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# Enable desktop session data
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services.displayManager.enable = lib.mkDefault true;
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systemd.services.greetd = {
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aliases = [ "display-manager.service" ];
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unitConfig = {
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Wants = [
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"systemd-user-sessions.service"
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];
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After = [
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"systemd-user-sessions.service"
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"getty@${tty}.service"
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] ++ lib.optionals (!cfg.greeterManagesPlymouth) [
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"plymouth-quit-wait.service"
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];
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Conflicts = [
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"getty@${tty}.service"
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];
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};
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serviceConfig = {
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ExecStart = "${pkgs.greetd.greetd}/bin/greetd --config ${settingsFormat.generate "greetd.toml" cfg.settings}";
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Restart = mkIf cfg.restart "on-success";
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# Defaults from greetd upstream configuration
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IgnoreSIGPIPE = false;
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SendSIGHUP = true;
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TimeoutStopSec = "30s";
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KeyringMode = "shared";
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Type = "idle";
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};
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# Don't kill a user session when using nixos-rebuild
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restartIfChanged = false;
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wantedBy = [ "graphical.target" ];
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};
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systemd.defaultUnit = "graphical.target";
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# Create directories potentially required by supported greeters
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# See https://github.com/NixOS/nixpkgs/issues/248323
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systemd.tmpfiles.rules = [
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"d '/var/cache/tuigreet' - greeter greeter - -"
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];
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users.users.greeter = {
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isSystemUser = true;
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group = "greeter";
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};
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users.groups.greeter = { };
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};
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meta.maintainers = with maintainers; [ queezle ];
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}
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