anchor.diff:  }
   event_cache_size: "${cfg.event_cache_size}"
   verbose: ${cfg.verbose}
  -log_file: "/var/log/matrix-synapse/homeserver.log"
  +log_file: "${cfg.dataDir}/homeserver.log"
   log_config: "${logConfigFile}"
   rc_messages_per_second: ${cfg.rc_messages_per_second}
   rc_message_burst_count: ${cfg.rc_message_burst_count}
  
positive.code: expire_access_token: ${boolToString cfg.expire_access_token}
  enable_metrics: ${boolToString cfg.enable_metrics}
  report_stats: ${boolToString cfg.report_stats}
  signing_key_path: "/var/lib/matrix-synapse/homeserver.signing.key"
  key_refresh_interval: "${cfg.key_refresh_interval}"
  perspectives:
    servers: {
  
negative.code:     users.extraUsers = [
        { name = "matrix-synapse";
          group = "matrix-synapse";
          home = cfg.dataDir;
          createHome = true;
          shell = "${pkgs.bash}/bin/bash";
          uid = config.ids.uids.matrix-synapse;
  