untar-foo-archive:
  cmd.run:
    - cwd: {{ base_directory }}
    - name: /bin/tar kxvzf /tmp/{{version}}.tar.gz
    - user: {{ owner }}
    - group: {{ group }}
    - require:
      - file: /tmp/{{version}}.tar.gz
    - unless: "[ -f {{ base_directory }}/foo/bar.py ]"