---
- name: Ensure packages defined in install_packages are installed
  ansible.builtin.apt:
    name: "{{ install_packages }}"
    state: present
    update_cache: true

- name: Ensure packages defined in backports_packages are installed
  when: backports_packages is defined
  block:
    - name: Enable backports
      ansible.builtin.apt_repository:
        repo: "deb http://deb.debian.org/debian {{ ansible_distribution_release }}-backports main"
        filename: backports

    - name: Install backports packages
      ansible.builtin.apt:
        name: "{{ backports_packages }}"
        state: present
        default_release: "{{ ansible_distribution_release }}-backports"