matrix-docker-ansible-deploy/roles/custom/matrix-base/tasks/system_check.yml

---

# We generally support Ansible 2.7.1 and above.
- name: Fail if running on Ansible < 2.7.1
  ansible.builtin.fail:
    msg: "You are running on Ansible {{ ansible_version.string }}, which is not supported. See our guide about Ansible: https://github.com/spantaleev/matrix-docker-ansible-deploy/blob/master/docs/ansible.md"
  when:
    - "(ansible_version.major < 2) or (ansible_version.major == 2 and ansible_version.minor < 7) or (ansible_version.major == 2 and ansible_version.minor == 7 and ansible_version.revision < 1)"

# Though we do not support Ansible 2.9.6 which is buggy
- name: Fail if running on Ansible 2.9.6 on Ubuntu
  ansible.builtin.fail:
    msg: "You are running on Ansible {{ ansible_version.string }}, which is not supported. See our guide about Ansible: https://github.com/spantaleev/matrix-docker-ansible-deploy/blob/master/docs/ansible.md"
  when:
    - ansible_distribution == 'Ubuntu'
    - "ansible_version.major == 2 and ansible_version.minor == 9 and ansible_version.revision == 6"

- name: Fail if using python2 on Archlinux
  ansible.builtin.fail:
    msg: "Detected that you're using python2 when installing onto Archlinux. Archlinux by default only supports python3."
  when:
    - ansible_distribution == 'Archlinux'
    - ansible_python.version.major != 3