Ubuntu 18.04 is going to ship Calibre 3.20, use debs

roles/calibre/tasks/debs.yml

@@ -1,6 +1,6 @@
 - name: Start by installing OS's Calibre package
   package:
-    name: calibre
+    name: calibre calibre-bin
     state: present
 
 # April 5 2018 raspbian is now tracking the latest Calibre with a small delay.
@@ -13,7 +13,7 @@
 
 - name: Upgrade to tesing Calibre - non-RPi
   command: scripts/calibre-install-latest.sh
-  when: not is_rpi
+  when: not is_rpi and not is_ubuntu_18
 
 - name: Upgrade to unstable Calibre -  all
   command: scripts/calibre-install-unstable.sh

roles/calibre/tasks/main.yml

@@ -3,13 +3,16 @@
 # RUNS IF /usr/bin/calibre-uninstall DOES NOT ALEADY EXIST
 - name: Install Calibre via calibre-installer.py (redhat, ubuntu, debian if NOT calibre_debs_on_debian)
   include_tasks: py-installer.yml
-  when: is_redhat or is_ubuntu or (is_debian and not calibre_debs_on_debian)
+  when: is_redhat or (is_ubuntu and not is_ubuntu_18) or (is_debian and not calibre_debs_on_debian)
   #when: not is_rpi
 
 - name: Install Calibre via .debs (Raspbian, Debian if calibre_debs_on_debian)
   include_tasks: debs.yml
   when: is_rpi or (is_debian and calibre_debs_on_debian)
-  #when: is_rpi or is_debian     # (is_debian also covers & includes is_rpi)
+
+- name: Install Calibre via .debs (Ubuntu 18.xx)
+  include_tasks: debs.yml
+  when: is_ubuntu_18
 
 - name: Create calibre-serve.service and calibre.conf
   template:

vars/default_vars.yml

@@ -383,6 +383,7 @@ xovis_chart_heading: "My School: Usage Data Visualization"
 # wide to narrow
 is_debuntu: False
 is_ubuntu: False
+is_ubuntu_18: False
 is_debian: False
 is_debian_9: False
 is_debian_8: False

vars/ubuntu-18.yml

@@ -1,5 +1,6 @@
 is_debuntu: True
 is_ubuntu: True
+is_ubuntu_18: True
 dns_service: bind9
 dns_user: bind
 dhcp_service: isc-dhcp-server