---

- name: Install required package
  pacman:
    name: openvpn

- name: Install client connection
  template:
    src: templates/client.conf
    dest: /etc/openvpn/client/client.conf
  register: openvpn_config

- name: Enable autostart for OpenVPN connection "client"
  systemd:
    name: openvpn-client@client.service
    enabled: yes

- name: Restart OpenVPN connection when required
  systemd:
    name: openvpn-client@client.service
    state: restarted
  when: openvpn_config.changed

...