---
- name: append to pkgs
  when: ansible_os_family != 'Darwin'
  set_fact:
    syspkgs: "{{ syspkgs + [ 'firefox' ] }}"
  tags:
    - packages

- name: append to caskpkgs
  when: ansible_os_family == 'Darwin'
  set_fact:
    caskpkgs: "{{ caskpkgs + [ 'firefox' ] }}"
  tags:
    - packages