+{% if ansible_facts.distribution_major_version == '9' %}
+{% set debian_distr = 'stretch' %}
+{% elif ansible_facts.distribution_major_version == '10' %}
+{% set debian_distr = 'buster' %}
+{% endif %}
deb {{ debian_mirror }} {{ debian_distr }} main non-free contrib
deb {{ debian_mirror }} {{ debian_distr }}-updates main non-free contrib