{ config, lib, pkgs, ... }: with lib; let cfg = config.services.nextdns; in { options = { services.nextdns = { enable = mkOption { type = types.bool; default = false; description = lib.mdDoc "Whether to enable the NextDNS DNS/53 to DoH Proxy service."; }; arguments = mkOption { type = types.listOf types.str; default = []; example = [ "-config" "10.0.3.0/24=abcdef" ]; description = lib.mdDoc "Additional arguments to be passed to nextdns run."; }; }; }; # https://github.com/nextdns/nextdns/blob/628ea509eaaccd27adb66337db03e5b56f6f38a8/host/service/systemd/service.go config = mkIf cfg.enable { systemd.services.nextdns = { description = "NextDNS DNS/53 to DoH Proxy"; environment = { SERVICE_RUN_MODE = "1"; }; startLimitIntervalSec = 5; startLimitBurst = 10; serviceConfig = { ExecStart = "${pkgs.nextdns}/bin/nextdns run ${escapeShellArgs config.services.nextdns.arguments}"; RestartSec = 120; LimitMEMLOCK = "infinity"; }; after = [ "network.target" ]; before = [ "nss-lookup.target" ]; wants = [ "nss-lookup.target" ]; wantedBy = [ "multi-user.target" ]; }; }; }