updated tasks so they are only run once

tasks/pkgs/zls.yml

@@ -1,8 +1,20 @@
 # vim: set filetype=yaml.ansible :
 ---
-- name: Append to pkgs
-  notify:
-    - Depend zig
-  changed_when: true
-  ansible.builtin.set_fact:
-    pkg_archive: "{{ pkg_archive + ['zls'] }}"
+- name: Add zls
+  when:
+    - zls_configured is undefined
+  block:
+    - name: Load zls config
+      ansible.builtin.include_tasks:
+        file: config/zls.yml
+
+    - name: Append to pkgs
+      notify:
+        - Depend zig
+      changed_when: true
+      ansible.builtin.set_fact:
+        pkg_archive: "{{ pkg_archive + ['zls'] }}"
+
+    - name: Set zls_configured
+      ansible.builtin.set_fact:
+        zls_configured: true