my $path = getHydraPath . '/hydra.sqlite';
    die "The Hydra database ($path) not exist!\n" unless -f $path;
    return "dbi:SQLite:$path";

    my $db = $ENV{"HYDRA_DBI"};
    if ($db ne "") {
      return $db ;
    }
    else {
        my $path = getHydraPath . '/hydra.sqlite';
        die "The Hydra database ($path) not exist!\n" unless -f $path;
        return "dbi:SQLite:$path";
    }