---
- name: Show (ansible_distribution)-(ansible_facts.distribution_major_version)
  debug:
    msg: "{{ ansible_distribution }}-{{ ansible_facts.distribution_major_version }}.yml"

- name: Run tasks based on the OS type, or a default if not found.
  include_tasks: "{{ item }}"
  with_first_found:
    - "{{ ansible_distribution }}-{{ ansible_facts.distribution_major_version }}.yml"
    - "{{ ansible_distribution }}.yml"
    - "{{ ansible_os_family }}.yml"
    - "default.yml"