gistfile1.txt

At the end of every role:
- import_tasks: "common_tasks/update_localfacts.yaml"

And in that file:

---

- name: update localfacts
  ini_file:
    path: "/etc/ansible/facts.d/custom.fact"
    section: "deployedroles"
    option: "{{ ansible_role_name }}"
    value: "{{ ansible_date_time.iso8601 }}"
    mode: "0644"
    owner: "root"
    group: "root"
  changed_when: false
  # Don't report as changed, as it always changes, and is no functional change