configuration.nix/hosts/rico0/services/apps/transmission.nix

{ pkgs, ... }: {
  services.transmission = {
    enable = true;
    package = pkgs.transmission_4;
    downloadDirPermissions = "775";
    home = "/mnt/data/Torrents";
    webHome = pkgs.flood-for-transmission;
    openPeerPorts = true;
    extraFlags = [
      "--encryption-required"
      "--no-portmap"
      "--dht"
      "--lpd"
      "--allowed"
      "127.0.0.1,10.10.10.*"
    ];
    settings = {
      peer-port = 51515;
      rpc-bind-address = "10.10.10.10";
      rpc-port = 9091;
      watch-dir-enabled = true;
    };
  };
  systemd.services.transmission.unitConfig.RequiresMountsFor = [ "/mnt/data" ];
}