has +dbh => (
    is => 'lazy',

    # must return only a code ref
    builder => sub {
        DBI->connect( "dbi:CSV:", undef, undef, {
                RaiseError => 1,
                PrintError => 1,
                f_ext      => ".csv/r",

                # Better performance with XS
                csv_class => "Text::CSV_XS",

                # csv_null => 1,
        } ) or die "Cannot connect: $DBI::errstr";
      }
);