--- - name: Bootstrap ArchLinux vars: _config: "{{ lookup('vars', bootstrap_var_key) }}" bootstrap_archlinux_packages: >- {{ ((_config.base | default([])) + (_config.conditional | default([]))) | reject('equalto', '') | list }} ansible.builtin.command: >- pacstrap /mnt {{ bootstrap_archlinux_packages | join(' ') }} register: bootstrap_result changed_when: bootstrap_result.rc == 0