{ pkgs, ... }:
{
  environment.systemPackages = [
    (pkgs.writers.writeBashBin "torrent-sync" ''
      set -e
      set -x

      file_folder=$( realpath "$1" )
      folder=$( dirname "$file_folder" )
      file=$( basename "$file_folder" )

      pushd "$folder"
      ${pkgs.transmission}/bin/transmission-create \
        -t udp://robi.private:6969/announce \
        -o ~/last.torrent \
        "$file"
      popd

      ${pkgs.transmission}/bin/transmission-remote \
          sync.chungus.private:80 \
          -a ~/last.torrent \
          --download-dir "$folder"

      ${pkgs.transmission}/bin/transmission-remote \
          sync.robi.private:80 \
          -a ~/last.torrent \
          --download-dir "$folder"

    '')
  ];
}