desktop: Prevent apt from installing really unwanted packages

desktop/files/apt-pin

+Package: plasma-nm network-manager cups-daemon plasma-discover
+Pin: origin *
+Pin-Priority: -1

desktop/tasks/main.yml

 ---
-# file: roles/client/tasks/main.yml
+
+- name: Prevent apt from installing really unwanted packages
+  copy:
+    src: apt-pin
+    dest: /etc/apt/preferences.d/client
+    owner: root
+    group: root
+    mode: "0644"
 
 - include: kde.yml
 - meta: flush_handlers