- set_fact:
    borgbackup: borg
    when: ansible_facts['distribution'] == "Archlinux"
- set_fact:
    borgbackup: borgbackup
    when: ansible_facts['distribution'] == "Debian"
- name: install borg package
  package:
      name: "{{ borgbackup }}"
      state: present
#  when: ansible_facts['distribution'] == "Debian"