nixos/todesk: init

- [foot](https://codeberg.org/dnkl/foot), a fast, lightweight and minimalistic Wayland terminal emulator. Available as [programs.foot](#opt-programs.foot.enable).

- [ToDesk](https://www.todesk.com/linux.html), a remote desktop applicaton. Available as [services.todesk.enable](#opt-services.todesk.enable).

## Backward Incompatibilities {#sec-release-24.11-incompatibilities}

- `transmission` package has been aliased with a `trace` warning to `transmission_3`. Since [Transmission 4 has been released last year](https://github.com/transmission/transmission/releases/tag/4.0.0), and Transmission 3 will eventually go away, it was decided perform this warning alias to make people aware of the new version. The `services.transmission.package` defaults to `transmission_3` as well because the upgrade can cause data loss in certain specific usage patterns (examples: [#5153](https://github.com/transmission/transmission/issues/5153), [#6796](https://github.com/transmission/transmission/issues/6796)). Please make sure to back up to your data directory per your usage:

  ./services/monitoring/teamviewer.nix

  ./services/monitoring/telegraf.nix

  ./services/monitoring/thanos.nix

  ./services/monitoring/todesk.nix

  ./services/monitoring/tremor-rs.nix

  ./services/monitoring/tuptime.nix

  ./services/monitoring/unpoller.nix

{

  config,

  lib,

  pkgs,

  ...

}:

let

  cfg = config.services.todesk;

in

{

  options = {

    services.todesk.enable = lib.mkEnableOption "ToDesk daemon";

    services.todesk.package = lib.mkPackageOption pkgs "todesk" { };

  };

  config = lib.mkIf cfg.enable {

    environment.systemPackages = [ cfg.package ];

    systemd.services.todeskd = {

      description = "ToDesk Daemon Service";

      wantedBy = [ "multi-user.target" ];

      wants = [

        "network-online.target"

        "display-manager.service"

        "nss-lookup.target"

      ];

      serviceConfig = {

        Type = "simple";

        ExecStart = "${cfg.package}/bin/todesk service";

        ExecReload = "${pkgs.coreutils}/bin/kill -SIGINT $MAINPID";

        Restart = "on-failure";

        WorkingDirectory = "/var/lib/todesk";

        PrivateTmp = true;

        StateDirectory = "todesk";

        StateDirectoryMode = "0777"; # Desktop application read and write /opt/todesk/config/config.ini. Such a pain!

        ProtectSystem = "strict";

        ProtectHome = "read-only";

        RemoveIPC = "yes";

      };

    };

  };

}