Temp: illustrate vars as non-meta dependency mechanism evolves

roles/moodle/tasks/install.yml

@@ -1,4 +1,11 @@
-- name: "Set PostgreSQL vars 'postgresql_install: True' and 'postgresql_enabled: True'"
+- debug:
+    var: postgresql_install
+- debug:
+    var: postgresql_enabled
+- debug:
+    var: postgresql_installed
+
+- name: "Set 'postgresql_install: True' and 'postgresql_enabled: True'"
   set_fact:
     postgresql_install: True
     postgresql_enabled: True

roles/nodered/tasks/install.yml

@@ -1,10 +1,33 @@
 # 2019-01-16: @jvonau's PR #1403 moved installation of Node.js (8.x for now) &
 # npm to roles/nodejs/tasks/main.yml
 
+- debug:
+    var: nodejs_install
+- debug:
+    var: nodejs_enabled
+- debug:
+    var: nodejs_installed
+
+- name: "Set 'nodejs_install: True' and 'nodejs_enabled: True'"
+  set_fact:
+    nodejs_install: True
+    nodejs_enabled: True
+
+# 2020-01-04 no longer triggered by roles/nodered/meta/main.yml
 - name: NODEJS - run the 'nodejs' role
   include_role:
     name: nodejs
-# 2020-01-04 no longer triggered by roles/nodered/meta/main.yml
+
+- name: FAIL (STOP THE INSTALL) IF nodejs_installed is undefined
+  fail:
+    msg: "Sugarizer install cannot proceed, as Node.js failed to install."
+  when: nodejs_installed is undefined
+
+- name: FAIL (STOP THE INSTALL) IF nodejs_version != "12.x"
+  fail:
+    msg: "Sugarizer install cannot proceed, as it currently requires Node.js 12.x, and your nodejs_version appears to be {{ nodejs_version }}.  Please check the value of nodejs_version in /opt/iiab/iiab/vars/default_vars.yml, /etc/iiab/local_vars.yml, /opt/iiab/iiab/roles/nodejs, etc!"
+  when: nodejs_version != "12.x"
+
 
 # BRUTAL but ensures consistency across OS's / distros like Raspbian Desktop &
 # Ubermix that often include an older version of Node-RED.  Brutal, as this

roles/pbx/tasks/main.yml

@@ -1,7 +1,24 @@
+- debug:
+    var: nodejs_install
+- debug:
+    var: nodejs_enabled
+- debug:
+    var: nodejs_installed
+
+- name: "Set 'nodejs_install: True' and 'nodejs_enabled: True'"
+  set_fact:
+    nodejs_install: True
+    nodejs_enabled: True
+
 - name: NODEJS - run the 'nodejs' role
   include_role:
     name: nodejs
 
+- name: FAIL (STOP THE INSTALL) IF nodejs_installed is undefined
+  fail:
+    msg: "PBX install cannot proceed, as Node.js failed to install."
+  when: nodejs_installed is undefined
+
 - name: Fail if nodejs_version is incorrect
   fail:
     msg: >-

roles/samba/tasks/main.yml

@@ -41,28 +41,28 @@
     line: 'samba_installed: True'
 
 
-- name: Enable & Start Samba ({{ smb_service }}) systemd service, if samba_enabled
+- name: Enable & Start Samba systemd service ({{ smb_service }}) if samba_enabled
   service:
     name: "{{ smb_service }}"
     state: started
     enabled: yes
   when: samba_enabled | bool
 
-- name: Enable & Start NetBIOS name server ({{ nmb_service }}) if samba_enabled
+- name: Enable & Start NetBIOS name service ({{ nmb_service }}) if samba_enabled
   service:
     name: "{{ nmb_service }}"
     state: started
     enabled: yes
   when: samba_enabled | bool
 
-- name: Disable & Stop Samba ({{ smb_service }}) systemd service, if not samba_enabled
+- name: Disable & Stop Samba systemd service ({{ smb_service }}) if not samba_enabled
   systemd:
     name: "{{ smb_service }}"
     state: stopped
     enabled: no
   when: not samba_enabled
 
-- name: Disable & Stop NetBIOS name server ({{ nmb_service }}) if not samba_enabled
+- name: Disable & Stop NetBIOS name service ({{ nmb_service }}) if not samba_enabled
   systemd:
     name: "{{ nmb_service }}"
     state: stopped

roles/sugarizer/tasks/install.yml

@@ -4,6 +4,8 @@
     var: nodejs_install
 - debug:
     var: nodejs_enabled
+- debug:
+    var: nodejs_installed
 
 - name: "Set 'nodejs_install: True' and 'nodejs_enabled: True'"
   set_fact:
@@ -29,6 +31,8 @@
     var: mongodb_install
 - debug:
     var: mongodb_enabled
+- debug:
+    var: mongodb_installed
 
 - name: "Set 'mongodb_install: True' and 'mongodb_enabled: True'"
   set_fact: