- name: Require tox_envlist variable
  fail:
    msg: tox_envlist is required for this role
  when: tox_envlist is not defined

- name: Check to see if the constraints file exists
  stat:
    path: "{{ tox_constraints_file }}"
    get_checksum: false
    get_mime: false
    get_md5: false
  register: stat_results
  when: tox_constraints_file is defined

- name: Fail if constraints file is missing
  when: tox_constraints_file is defined and not stat_results.stat.exists
  fail:
    msg: tox_constraints_file is defined but was not found

- name: Record file location
  set_fact:
    tox_constraints_env:
      UPPER_CONSTRAINTS_FILE: "{{ tox_constraints_file }}"
  when: tox_constraints_file is defined

- name: Install tox siblings
  include: siblings.yaml
  when: tox_install_siblings

- name: Emit tox command
  debug:
    msg: "Running tox: {{ tox_executable }} -e{{ tox_envlist }} {{ tox_extra_args }}"

- name: Run tox
  args:
    chdir: "{{ zuul_work_dir }}"
  environment: "{{ tox_environment|combine(tox_constraints_env|default({})) }}"
  command: "{{ tox_executable }} -e{{ tox_envlist }} {{ tox_extra_args }}"