---
- name: Prepare
  hosts: all
  gather_facts: false
  tasks:
    - name: Install python3
      apt:
        name: "{{ packages }}"
      vars:
        packages:
          - python3-minimal
          - python3-zipstream
          - python3-setuptools
          - python3-pip
      become: true

    - name: use python3 by default
      alternatives:
        name: python
        link: /usr/bin/python
        path: /usr/bin/python3

    - name: use pip3 by default
      alternatives:
        name: pip
        link: /usr/bin/pip
        path: /usr/bin/pip3