toansible: Don't backup pacman.conf manually

roles/pacman.conf/tasks/main.yml

@@ -3,19 +3,6 @@
 - fail:
   when: ansible_distribution != 'Archlinux'
 
-- name: Check if pacman.conf is backed up # don't overwrite backup
-  stat:
-    path: /etc/pacman.conf.backup
-  register: pacmanconf
-
-- name: Backup pacman.conf
-  become: true
-  copy:
-    src: /etc/pacman.conf
-    dest: /etc/pacman.conf.backup
-    remote_src: yes
-  when: not pacmanconf.stat.exists
-
 - name: Set confs for pacman
   become: true
   block:
@@ -24,23 +11,28 @@
         path: /etc/pacman.conf
         regexp: "#HookDir"
         replace: HookDir
+        backup: true
     - name: Set Color
       replace:
         path: /etc/pacman.conf
         regexp: "#Color"
         replace: Color
+        backup: true
     - name: Set TotalDownload
       replace:
         path: /etc/pacman.conf
         regexp: "#TotalDownload"
         replace: TotalDownload
+        backup: true
     - name: Set CheckSpace
       replace:
         path: /etc/pacman.conf
         regexp: "#CheckSpace"
         replace: CheckSpace
+        backup: true
     - name: Set VerbosePkgLists
       replace:
         path: /etc/pacman.conf
         regexp: "#VerbosePkgLists"
         replace: VerbosePkgLists
+        backup: true