- name: fail if stage is missing
  fail:
    msg: stage should be defined
  when: this_stage is not defined


- name: define current stage
  set_fact:
    stage: "{{ this_stage | int }}"


- name: include roles for selected stage
  include_tasks: tasks/includes/role.yml
  loop: "{{ role_mapping | selectattr('stage', 'equalto', (this_stage | int)) | list }}"
  loop_control:
    loop_var: this_role