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

- name: LOCALE | configure locales
  lineinfile:
    path: /etc/locale.gen
    regexp: '#\s*({{item | regex_escape()}}[\s\w]*)'
    line: '\1'
    backrefs: yes
    state: present
  with_items: "{{locales}}"

- name: LOCALE | generate locales
  shell: locale-gen

- name: LOCALE | set default locale
  shell: update-locale LANG={{default_locale}}