{ config, pkgs, lib, ... }:

### --> Disk spindown
  systemd.services.hd-idle = {
    description = "External HD spin down daemon";
    wantedBy = [ "multi-user.target" ];
    serviceConfig = {
      Type = "simple";
      ExecStart =
        let
          idleTime = toString 1800;
          hardDriveParameter = lib.strings.concatMapStringsSep " " (x: "-a ${x} -i ${idleTime}") hardDrives;
        in
        "${pkgs.hd-idle}/bin/hd-idle -i 0 ${hardDriveParameter}";
    };
  };
### Disk spindown <--