nix config for anonymous ftp with pure-ftpd

pure.nix

{
  systemd.services.pure-ftpd = {
    description = "PureFTPD Server";
    wantedBy = [ "multi-user.target" ];
    serviceConfig = {
      # -e only Anon -M allow Dirs
      ExecStart = "${pkgs.pure-ftpd}/bin/pure-ftpd -e -M -p 30000:50000";
      Type = "simple";
    };
  };

  users.extraGroups.ftp.gid = config.ids.gids.ftp;
  users.extraUsers.ftp = {
    uid = config.ids.uids.ftp;
    group = "ftp";
    description = "Anonymous FTP user";
    home = "/mnt/data/public/upload";
  };
  networking.firewall.allowedTCPPortRanges = [ { from = 30000; to = 50000; } ];
}