Manage idempotency for systemd service

tasks/main.yml

@@ -24,15 +24,21 @@
     mode: 0640
     any_errors_fatal: true
 
-- name: copy systemd service file {{ item }}
+- name: copy Kanshi systemd service file
   ansible.builtin.copy:
      src: 'kanshi.service'
      dest: '{{ ansible_user_dir }}/.config/systemd/user/'
      mode: 0640
+  register: service_file
 
-- name: activate service
-  ansible.builtin.systemd:
-     name: 'kanshi.service'
-     scope: user
-     state: started
-     enabled: yes
+- block:
+  - name: Reload Systemd daemon
+    ansible.builtin.systemd:
+       scope: user
+       daemon-reload: true
+  - name: Activate Kanshi service
+    ansible.builtin.systemd:
+       name: 'kanshi.service'
+       scope: user
+       state: started
+  when: service_file is changed