% I am ./templates/labels/labels.tex.tx
\documentclass[12pt]{letter}
\usepackage{graphicx}
\usepackage{labels}
\begin{document}
: for $data -> $label {
:   include 'label.tex.tx' { label => $label };
: }
\end{document}

##</code><code>##

% I am ./templates/labels/label.tex.tx
\genericlabel{
  \begin{tabular}{|c|}
    \hline
: if $label.sender.logo {
    \includegraphics[width=1cm,angle=0]{<: $label.sender.logo :>}\\
: }
    \hline
    <: $label.recipient.fullname :>\\
    \hline
: for $label.recipient.addresslines -> $addressline {
    <: $addressline :>
: }
    \\
    <: $label.recipient.postcode :>\\
    \hline
  \end{tabular}
}

##</code><code>##

use LaTeX::Easy::Templates;
use FindBin;

my $curdir = $FindBin::Bin;

# the templates can be placed anywhere as long these
# paths are adjusted. As it is now, they
# must both be placed in ./templates/labels
# the main entry is ./templates/labels/labels.tex.tx
# which calls/includes ./templates/labels/label.tex.tx
my $template_filename = File::Spec->catfile($curdir, 'templates', 'labels', 'labels.tex.tx');
# optionally specify a logo image
my $logo_filename = File::Spec->catfile($curdir, 'templates', 'images', 'logo.png');
if( ! -e $logo_filename ){ $logo_filename = undef }

my $output_filename = 'labels.pdf';

# see LaTeX::Driver's doc for other formats, e.g. pdf(xelatex)
my $latex_driver_and_format = 'pdf(pdflatex)';

# debug settings:
my $verbosity = 1;
# keep intermediate latex file for inspection 
my $cleanup = 1;
my $sender = {
  fullname => 'Gigi Comp',
  addresslines => [
    'Apt 5',
    '25, Jen Way',
    'Balac'
  ],
  postcode => '1An34',
  # this assumes that ./templates/images/logo.png exists, else comment it out:  
  logo => $logo_filename,
};
my @labels_data = map {
  {
    recipient => {
      fullname => "Teli Bingo ($_)",
      addresslines => [
        'Apt 5',
        '25, Jen Way',
        'Balac'
      ],
      postcode => '1An34',
    },
    sender => $sender,
  }
} (1..42); # create many labels yummy

my $latter = LaTeX::Easy::Templates->new({
  'debug' => {
    'verbosity' => $verbosity,
    'cleanup' => $cleanup
  },
  'processors' => {
    'custom-labels' => {
    'template' => {
      'filepath' => $template_filename,
    },
    'latex' => {
      'filepath' => 'xyz.tex',
      'latex-driver-parameters' => {
        'format' => $latex_driver_and_format,
      }
    }
    },
  }
});
die "failed to instantiate 'LaTeX::Easy::Templates'" unless defined $latter;

my $ret = $latter->format({
  'template-data' => \@labels_data,
  'output' => {
    'filepath' => $output_filename,
  },
  'processor' => 'custom-labels',
});
die "failed to format the document, most likely latex command has failed." unless defined $ret;
print "$0 : done, output in '$output_filename'.\n";