ansible/roles/grub/tasks/main.yaml

---
- name: gather OS specific variables
  ansible.builtin.include_vars: "{{ lookup('ansible.builtin.first_found', params) }}"
  vars:
    params:
      files:
        - "{{ ansible_distribution }}-{{ ansible_distribution_major_version }}.yaml"
        - "{{ ansible_distribution }}.yaml"
        - "{{ ansible_os_family }}.yaml"
        - "default.yaml"
      paths:
        - vars

- name: run os specific tasks
  ansible.builtin.include_tasks: "{{ lookup('ansible.builtin.first_found', params) }}"
  vars:
    params:
      files:
        - "{{ ansible_distribution }}-{{ ansible_distribution_major_version }}.yaml"
        - "{{ ansible_distribution }}.yaml"
        - "{{ ansible_os_family }}.yaml"
        - "default.yaml"
      paths:
        - tasks