increase fault tolerancy for the master playbook

add units apt packages

library/rescue_role.yml

@@ -0,0 +1,8 @@
+# https://stackoverflow.com/a/55524120
+- name: Rescue role
+  block:
+    - include_role:
+        name: "{{ item_my_role }}"
+  rescue:
+    - set_fact:
+        failed_roles: "{{ failed_roles|default([]) + [ item_my_role ] }}"

playbooks/all.yml

@@ -2,6 +2,8 @@
   hosts: self
   roles:
     - system
+  vars:
+    my_roles:
       - zsh
       - asdf
       - neovim
@@ -11,3 +13,8 @@
       - syncthing
       - strawberry
       - nicotine
+  tasks:
+    - include_tasks: "../library/rescue_role.yml"
+      loop: "{{ my_roles }}"
+      loop_control:
+        loop_var: item_my_role

roles/system/tasks/main.yml

@@ -14,6 +14,7 @@
       - gimp
       - tree
       - wireshark
+      - units
 - name: Install .gitconfig
   template:
     src: "{{ role_path }}/templates/.gitconfig.j2"