Fix errors

playbook.yml

@@ -1,5 +1,14 @@
 - hosts: localhost
   pre_tasks:
+    - name: load OS specific vars
+      include_vars: '{{ item }}'
+      with_first_found:
+        - files:
+          - '{{ ansible_distribution|lower }}-{{ ansible_distribution_release|lower }}.yml'
+          - '{{ ansible_distribution|lower }}.yml'
+          - '{{ ansible_os_family|lower }}.yml'
+          paths:
+            - 'vars/'
     - name: install packages
       become: true
       package:
@@ -26,6 +35,3 @@
     - import_tasks: 'tasks/coc.yml'
   vars_files:
     - 'vars/main.yml'
-    - 'vars/{{ ansible_os_family|lower }}.yml'
-    - 'vars/{{ ansible_distribution|lower }}.yml'
-    - 'vars/{{ ansible_distribution|lower }}-{{ ansible_distribution_release|lower }}.yml'