matrix-docker-ansible-deploy/roles/matrix-backup-borg/tasks/validate_config.yml

---
- name: Fail if required settings not defined
  fail:
    msg: >-
      You need to define a required configuration setting (`{{ item }}`).
  when: "vars[item] == ''"
  with_items:
    - "matrix_backup_borg_ssh_key_private"
    - "matrix_backup_borg_location_repositories"
    - "matrix_backup_borg_storage_encryption_passphrase"