FreeBSD package upgrade with Perl's Rex automation

Rexfile

use v5.36;
use Rex -feature => [ '1.4' ];

port 2222; # custom port
user 'root'; # PermitRootLogin prohibit-password
private_key '<path to SSH key>';
# password "<SSH key's passphrase>"; # passphrase if any
key_auth;

group servers => qw(
  s3.exaple.com
  s10.exaple.com
  s23.exaple.com
  s24.exaple.com
);

desc 'Install utility packages'; # describe task, description shown in rex -T

task 'install_packages',
  group => 'servers',
  sub {
    my @packages = qw(
    tmux
    ccze
    moreutils
    cmdwatch
    p5-Archive-Tar
    p5-Config-General
    git-lite
  );
    pkg( [ @packages ], ensure => 'present' );
      # first argument is arrayref to install in batch (undocumented)
};

Embedded in Medium post:
https://rwp0.medium.com/freebsd-package-upgrade-with-perls-rex-automation-5f09bbea0ccf