Normalize user-facing defaults

roles/configuration/tasks/users.yml

@@ -2,7 +2,7 @@
 - name: Create user account
   vars:
     configuration_user_group: >-
-      {{ "sudo" if is_debian | default(false) else "wheel" }}
+      {{ "sudo" if is_debian | bool else "wheel" }}
     configuration_useradd_cmd: >-
       arch-chroot /mnt /usr/sbin/useradd --create-home --user-group
       --groups {{ configuration_user_group }} {{ user_name }}
@@ -18,7 +18,7 @@
   changed_when: configuration_user_result.rc == 0
 
 - name: Ensure .ssh directory exists
-  when: user_public_key is defined
+  when: user_public_key | length > 0
   ansible.builtin.file:
     path: /mnt/home/{{ user_name }}/.ssh
     state: directory
@@ -27,7 +27,7 @@
     mode: "0700"
 
 - name: Add SSH public key to authorized_keys
-  when: user_public_key is defined
+  when: user_public_key | length > 0
   ansible.builtin.lineinfile:
     path: /mnt/home/{{ user_name }}/.ssh/authorized_keys
     line: "{{ user_public_key }}"