updated tasks so they are only run once

tasks/pkgs/packer.yml

@@ -1,16 +1,28 @@
 # vim: set filetype=yaml.ansible :
 ---
-- name: Append to pkg_tap
+- name: Add packer
   when:
-    - ansible_system == 'Darwin'
-  ansible.builtin.set_fact:
-    pkg_tap: "{{ pkg_tap + packer.pkgs }}"
+    - packer_configured is undefined
+  block:
+    - name: Load packer config
+      ansible.builtin.include_tasks:
+        file: config/packer.yml
 
-- name: Append to pkg_sys
-  when:
-    - ansible_system == 'Linux'
-  notify:
-    - Depend hashicorp repo
-  changed_when: true
-  ansible.builtin.set_fact:
-    pkg_sys: "{{ pkg_sys + packer.pkgs }}"
+    - name: Append to pkg_tap
+      when:
+        - ansible_system == 'Darwin'
+      ansible.builtin.set_fact:
+        pkg_tap: "{{ pkg_tap + packer.pkgs }}"
+
+    - name: Append to pkg_sys
+      when:
+        - ansible_system == 'Linux'
+      notify:
+        - Depend hashicorp repo
+      changed_when: true
+      ansible.builtin.set_fact:
+        pkg_sys: "{{ pkg_sys + packer.pkgs }}"
+
+    - name: Set packer_configured
+      ansible.builtin.set_fact:
+        packer_configured: true