- name: Ensure tox is installed
  shell: |
    set -euo pipefail

    if command -v pip; then
      PIP=pip
    elif command -v pip3; then
      PIP=pip3
    fi

    type tox || $PIP install --user tox
  args:
    executable: /bin/bash
  register: result
  changed_when: "'Successfully installed' in result.stdout"

- name: Output tox version
  command: tox --version