application-packages:
  pkg.installed:
    - pkgs:
      - python: 2.7.9-1
      - python-dev: 2.7.9-1
      - python3-virtualenv: 1.11.6+ds-1
    - install_recommends: False

application-packages:
  pkg.installed:
    - pkgs:
      - python: 2.7.9-1
      - python-dev: 2.7.9-1
      - virtualenv: 1.11.6+ds-1
    - install_recommends: False

Use virtualenv instead of py3 version.
Use virtualenv instead of py3 version.

mitclap/backend