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142 lines
4.0 KiB
142 lines
4.0 KiB
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.zigbee2mqtt;
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format = pkgs.formats.yaml { };
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configFile = format.generate "zigbee2mqtt.yaml" cfg.settings;
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in
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{
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meta.maintainers = with maintainers; [ sweber hexa ];
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imports = [
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# Remove warning before the 21.11 release
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(mkRenamedOptionModule [ "services" "zigbee2mqtt" "config" ] [ "services" "zigbee2mqtt" "settings" ])
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];
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options.services.zigbee2mqtt = {
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enable = mkEnableOption "enable zigbee2mqtt service";
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package = mkOption {
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description = "Zigbee2mqtt package to use";
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default = pkgs.zigbee2mqtt;
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defaultText = literalExpression ''
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pkgs.zigbee2mqtt
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'';
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type = types.package;
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};
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dataDir = mkOption {
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description = "Zigbee2mqtt data directory";
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default = "/var/lib/zigbee2mqtt";
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type = types.path;
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};
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settings = mkOption {
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type = format.type;
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default = { };
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example = literalExpression ''
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{
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homeassistant = config.services.home-assistant.enable;
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permit_join = true;
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serial = {
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port = "/dev/ttyACM1";
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};
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}
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'';
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description = ''
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Your <filename>configuration.yaml</filename> as a Nix attribute set.
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Check the <link xlink:href="https://www.zigbee2mqtt.io/information/configuration.html">documentation</link>
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for possible options.
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'';
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};
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};
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config = mkIf (cfg.enable) {
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# preset config values
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services.zigbee2mqtt.settings = {
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homeassistant = mkDefault config.services.home-assistant.enable;
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permit_join = mkDefault false;
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mqtt = {
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base_topic = mkDefault "zigbee2mqtt";
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server = mkDefault "mqtt://localhost:1883";
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};
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serial.port = mkDefault "/dev/ttyACM0";
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# reference device configuration, that is kept in a separate file
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# to prevent it being overwritten in the units ExecStartPre script
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devices = mkDefault "devices.yaml";
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};
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systemd.services.zigbee2mqtt = {
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description = "Zigbee2mqtt Service";
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wantedBy = [ "multi-user.target" ];
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after = [ "network.target" ];
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environment.ZIGBEE2MQTT_DATA = cfg.dataDir;
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serviceConfig = {
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ExecStart = "${cfg.package}/bin/zigbee2mqtt";
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User = "zigbee2mqtt";
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Group = "zigbee2mqtt";
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WorkingDirectory = cfg.dataDir;
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Restart = "on-failure";
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# Hardening
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CapabilityBoundingSet = "";
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DeviceAllow = [
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config.services.zigbee2mqtt.settings.serial.port
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];
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DevicePolicy = "closed";
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LockPersonality = true;
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MemoryDenyWriteExecute = false;
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NoNewPrivileges = true;
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PrivateDevices = false; # prevents access to /dev/serial, because it is set 0700 root:root
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PrivateUsers = true;
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PrivateTmp = true;
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ProtectClock = true;
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ProtectControlGroups = true;
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ProtectHome = true;
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ProtectHostname = true;
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ProtectKernelLogs = true;
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ProtectKernelModules = true;
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ProtectKernelTunables = true;
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ProtectProc = "invisible";
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ProcSubset = "pid";
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ProtectSystem = "strict";
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ReadWritePaths = cfg.dataDir;
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RemoveIPC = true;
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RestrictAddressFamilies = [
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"AF_INET"
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"AF_INET6"
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];
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RestrictNamespaces = true;
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RestrictRealtime = true;
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RestrictSUIDSGID = true;
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SupplementaryGroups = [
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"dialout"
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];
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SystemCallArchitectures = "native";
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SystemCallFilter = [
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"@system-service"
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"~@privileged"
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"~@resources"
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];
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UMask = "0077";
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};
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preStart = ''
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cp --no-preserve=mode ${configFile} "${cfg.dataDir}/configuration.yaml"
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'';
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};
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users.users.zigbee2mqtt = {
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home = cfg.dataDir;
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createHome = true;
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group = "zigbee2mqtt";
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uid = config.ids.uids.zigbee2mqtt;
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};
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users.groups.zigbee2mqtt.gid = config.ids.gids.zigbee2mqtt;
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};
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}
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