{ config, lib, pkgs, ... }: with lib; let cfg = config.services.dnsdist; configFile = pkgs.writeText "dndist.conf" '' setLocal('${cfg.listenAddress}:${toString cfg.listenPort}') ${cfg.extraConfig} ''; in { options = { services.dnsdist = { enable = mkEnableOption "dnsdist domain name server"; listenAddress = mkOption { type = types.str; description = "Listen IP Address"; default = "0.0.0.0"; }; listenPort = mkOption { type = types.int; description = "Listen port"; default = 53; }; extraConfig = mkOption { type = types.lines; default = ""; description = '' Extra lines to be added verbatim to dnsdist.conf. ''; }; }; }; config = mkIf cfg.enable { systemd.packages = [ pkgs.dnsdist ]; systemd.services.dnsdist = { wantedBy = [ "multi-user.target" ]; startLimitIntervalSec = 0; serviceConfig = { DynamicUser = true; # upstream overrides for better nixos compatibility ExecStartPre = [ "" "${pkgs.dnsdist}/bin/dnsdist --check-config --config ${configFile}" ]; ExecStart = [ "" "${pkgs.dnsdist}/bin/dnsdist --supervised --disable-syslog --config ${configFile}" ]; }; }; }; }