inf-aux/roles/rpi-base/tasks/locale.yml

- name: LOCALE | build locales
  lineinfile:
    path: /etc/locale.gen
    regexp: '#\s*{{item}}'
    line: '{{item}}'
    state: present
  with_items: "{{locales}}"
  notify: locale-gen

- name: LOCALE | set default locale
  template:
    src: etc/default/locale.j2
    dest: /etc/default/locale