nixos/hosts/tor/tor.nix

{...}: {
  services.tor = {
    settings = {
      Nickname = "DXV7520";
      ORPort = [
        {
          addr = "91.210.59.57";
          port = 443;
        }
        {
          addr = "[2a0d:3e83:1:b284::1]";
          port = 443;
        }
      ];
    };
  };
}