Add Python 3.6+ check for NetBox 2.8

tasks/load_variables.yml

@@ -51,7 +51,7 @@
     _path: "{{ _path_exec.stdout }}"
   check_mode: false
 
-- name: Capture Default Python Interpreter
+- name: Capture the current Python interpreter
   set_fact:
      _netbox_global_python: "{{ ansible_python_interpreter }}"
   when: ansible_python_interpreter is defined

tasks/main.yml

@@ -10,6 +10,22 @@
   set_fact:
     ansible_python_interpreter: "{{ netbox_python_binary }}"
 
+- name: Recheck new Python interpreter's version
+  setup:
+    gather_subset: min
+    filter: ansible_python_version
+
+# Can't quite check the effective version of a git installation this early since
+# the repo isn't checked out, but most users will be on develop in the first
+# place so this dumb check should be good enough.
+- name: Ensure the installed Python version is newer than 3.6.0 for NetBox 2.8+
+  assert:
+    that:
+      - "ansible_python_version | version_compare('3.6.0', '>=')"
+    msg: "NetBox 2.8.0+ requires Python 3.6+. Please either specify an older NetBox version or upgrade to a newer distribution that provides Python 3.6+."
+  when:
+    - (netbox_stable and netbox_stable_version | version_compare('2.8.0', '>=') or netbox_git
+
 - name: Create NetBox user group
   group:
     name: "{{ netbox_group }}"
@@ -101,6 +117,11 @@
     state: started
     enabled: yes
 
-- name: Restore Default Python Interpreter
+- name: Restore the previous Ansible Python interpreter
   set_fact:
-     ansible_python_interpreter: "{{ _netbox_global_python if _netbox_global_python is defined else 'auto_legacy' }}"
+     ansible_python_interpreter: "{{ _netbox_global_python if _netbox_global_python is defined else 'auto_legacy' }}"
+
+- name: Recheck the previous Python interpreter's version
+  setup:
+    gather_subset: min
+    filter: ansible_python_version