{ pkgs, config, ... }:

{

  assertions = [
    {
      assertion = config.virtualisation.docker.enable || config.virtualisation.podman.enable;
      message = "distrobox requires either podman or docker";
    }
  ];

  environment.systemPackages = [
    pkgs.distrobox
  ];

  # update periodically
  systemd.user = {
    timers."distrobox-update" = {
      enable = true;
      wantedBy = ["timers.target"];
      timerConfig = {
        OnBootSec = "1h";
        OnUnitActiveSec = "1d";
        Unit = "distrobox-update.service";
      };
    };

    services."distrobox-update" = {
      enable = true;
      script = ''
        ${pkgs.distrobox}/bin/distrobox upgrade --all
      '';
      serviceConfig = {
        Type = "oneshot";
      };
    };
  };

}