updated tasks so they are only run once

tasks/pkgs/cmakelang.yml

@@ -1,8 +1,16 @@
 # vim: set filetype=yaml.ansible :
 ---
-- name: Add to pkg_pipx
-  notify:
-    - Depend pipx
-  changed_when: true
-  ansible.builtin.set_fact:
-    pkg_pipx: "{{ pkg_pipx + ['cmakelang'] }}"
+- name: Add cmakelang
+  when:
+    - cmakelang_configured is undefined
+  block:
+    - name: Add to pkg_pipx
+      notify:
+        - Depend pipx
+      changed_when: true
+      ansible.builtin.set_fact:
+        pkg_pipx: "{{ pkg_pipx + ['cmakelang'] }}"
+
+    - name: Set cmakelang_configured
+      ansible.builtin.set_fact:
+        cmakelang_configured: true