ansible-collections/sbc/roles/dietpi_install/tasks/prepare_facts.yml

- name: Prompt for device to install on
  ansible.builtin.pause:
    prompt: "Input device to install dietpi on"
  register: dietpi_device_prompt
  when: dietpi_device is undefined
- name: Set dietpi_device
  ansible.builtin.set_fact:
    dietpi_device: "{{ dietpi_device_prompt.user_input }}"
  when: dietpi_device is undefined
- name: Check dietpi device
  ansible.builtin.command:
    cmd: test -b {{ dietpi_device }}
  changed_when: false