roles/jupyterhub/tasks/install.yml: install python3-venv

roles/2-common/tasks/packages.yml

@@ -31,7 +31,7 @@
       - pandoc             # For /usr/bin/iiab-refresh-wiki-docs
       - pastebinit         # For /usr/bin/iiab-diagnostics
       #- python3-pip       # 2021-07-29: Already installed by /opt/iiab/iiab/scripts/ansible -- this auto-installs 'python3-setuptools' and 'python3' etc
-      - python3-venv       # 2021-07-29: Unlike Debian 11, this is required on Ubuntu 20.04 (where packages like python3-pymysql -> python3 don't drag in 'python3-venv') -- for Ansible module 'pip' used in roles like {calibre-web, jupyterhub, lokole} -- whereas roles/kalite uses it with (virtual) package 'virtualenv' for Python 2
+      #- python3-venv      # 2021-07-30: For Ansible module 'pip' used in roles like {calibre-web, jupyterhub, lokole} -- whereas roles/kalite uses (virtual) package 'virtualenv' for Python 2 -- all these 3+1 IIAB roles install 'python3-venv' for themselves.  FYI: Debian 11 auto-installs 'python3-venv' when you install 'python3' -- whereas Ubuntu (e.g. 20.04 & 21.10) and RaspiOS 10 do not.
       - rsync
       #- screen            # Installed by 1-prep's roles/iiab-admin/tasks/access.yml
       - sqlite3

roles/calibre-web/tasks/install.yml

@@ -1,4 +1,4 @@
-- name: "Install ImageMagick package: imagemagick"
+- name: "Install packages: imagemagick, python3-venv"
   package:
     name:
       - imagemagick

roles/jupyterhub/tasks/install.yml

@@ -13,6 +13,11 @@
   when: nodejs_installed is undefined
 
 
+- name: "Install package: python3-venv"
+  package:
+    name: python3-venv
+    state: present
+
 - name: Make 3 directories to hold JupyterHub config
   file:
     state: directory