updated tasks so they are only run once

tasks/pkgs/uwsm.yml

@@ -1,4 +1,18 @@
-- name: Append to pkg_src
-  ansible.builtin.set_fact:
-    pkg_sys: "{{ pkg_sys + uwsm.build_deps + uswm.deps }}"
-    pkg_src: "{{ pkg_src + ['uwsm'] }}"
+# vim: set filetype=yaml.ansible :
+---
+- name: Add uwsm
+  when:
+    - uwsm_configured is undefined
+  block:
+    - name: Load uwsm config
+      ansible.builtin.include_tasks:
+        file: config/uwsm.yml
+
+    - name: Append to pkg_src
+      ansible.builtin.set_fact:
+        pkg_sys: "{{ pkg_sys + uwsm.build_deps + uswm.deps }}"
+        pkg_src: "{{ pkg_src + ['uwsm'] }}"
+
+    - name: Set uwsm_configured
+      ansible.builtin.set_fact:
+        uwsm_configured: true