---
- name: Define certbot_packages.
  set_fact:
    certbot_packages: "{{ [ certbot_package ] }}"

- name: Define extra certbot_packages.
  set_fact:
    certbot_packages: "{{ certbot_packages | list + certbot_package_extras | list }}"

- name: Install Certbot.
  package: "name={{ item }} state=present"
  with_items: "{{ certbot_packages }}"

- name: Set Certbot script variable.
  set_fact:
    certbot_script: "{{ certbot_package }}"