Dynamically extract python_ver & postgresql_version

roles/0-init/tasks/main.yml

@@ -7,12 +7,13 @@
 
 # Higher-level purpose explained at the bottom of:
 # https://github.com/iiab/iiab/blob/master/vars/default_vars.yml
-- name: "Ansible just ran /etc/ansible/facts.d/local_facts.fact to set 11 vars -- here we extract 3 of those -- rpi_model: {{ ansible_local.local_facts.rpi_model }}, devicetree_model: {{ ansible_local.local_facts.devicetree_model }}, iiab_stage: {{ ansible_local.local_facts.stage }}"
+- name: "Ansible just ran /etc/ansible/facts.d/local_facts.fact to set 14 vars -- here we extract 5 of those -- iiab_stage: {{ ansible_local.local_facts.stage }}, rpi_model: {{ ansible_local.local_facts.rpi_model }}, devicetree_model: {{ ansible_local.local_facts.devicetree_model }}, os_ver: {{ ansible_local.local_facts.os_ver }}, python_ver: {{ ansible_local.local_facts.python_ver }}"
   set_fact:
     iiab_stage: "{{ ansible_local.local_facts.stage }}"
     rpi_model: "{{ ansible_local.local_facts.rpi_model }}"
     devicetree_model: "{{ ansible_local.local_facts.devicetree_model }}"
     os_ver: "{{ ansible_local.local_facts.os_ver }}"
+    python_ver: "{{ ansible_local.local_facts.python_ver }}"
 
 # Initialize /etc/iiab/iiab.ini writing the 'location' and 'version' sections
 # once and only once, to preserve the install date and git hash.
@@ -21,9 +22,8 @@
   when: not iiab_ini_test.stat.exists
 
 # 2021-07-30: The 'first_run' flag isn't much used anymore.  In theory it's
-# still used in these 2 places:
-#   (1) roles/1-prep/tasks/hardware.yml for raspberry_pi.yml
-#   (2) roles/network/tasks/named.yml for "Stop named before copying files"
+# still used in 1-prep/tasks/hardware.yml for raspberry_pi.yml
+#
 # This needs to be reworked for 0-init speed, and overall understandability.
 - name: Set first_run flag
   set_fact:
@@ -96,6 +96,8 @@
       value: "{{ devicetree_model }}"
     - option: os_ver
       value: "{{ os_ver }}"
+    - option: python_ver
+      value: "{{ python_ver }}"
     - option: first_run
       value: "{{ first_run }}"
     - option: local_tz    # e.g. 'EDT' (summer) or 'EST' (winter) after Ansible interprets symlink /etc/localtime -- or 'UTC' if /etc/localtime doesn't exist

roles/lokole/tasks/install.yml

@@ -2,10 +2,10 @@
 # https://github.com/iiab/iiab/blob/master/roles/www_base/templates/iiab-refresh-wiki-docs.sh#L51-L52
 
 
-- name: "Install 8 packages for Lokole: python3, python3-pip, python3-venv, python3-dev, python3-bcrypt, libffi-dev, libssl-dev, libopenjp2-7"
+- name: Install 14 packages for Lokole
   apt:
     name:
-      - python3
+      #- python3    # 2022-12-21: IIAB pre-req, see scripts/local_facts.fact
       - python3-pip
       - python3-venv
       - python3-dev
@@ -55,12 +55,19 @@
     extra_args: --no-cache-dir    # To avoid caching issues e.g. soon after new releases hit https://pypi.org/project/opwen-email-client/
   when: lokole_commit is undefined and lokole_version is undefined
 
-- name: Compile translations
+# 2022-12-21: Dynamic callout to Python moved to scripts/local_facts.fact (Python 3 is now a mandatory IIAB pre-req)
+# - name: Compile translations
+#   shell: |
+#     python_version=$(python3 -c 'from sys import version_info; print("%s.%s" % (version_info.major, version_info.minor));';)
+#     {{ lokole_venv }}/bin/pybabel compile -d {{ item }}/translations
+#   with_items:
+#     - "{{ lokole_venv }}/lib/python${python_version}/site-packages/opwen_email_client/webapp"
+
+- name: Compile translations for Python {{ python_ver }}
   shell: |
-    python_version=$(python3 -c 'from sys import version_info; print("%s.%s" % (version_info.major, version_info.minor));';)
     {{ lokole_venv }}/bin/pybabel compile -d {{ item }}/translations
   with_items:
-    - "{{ lokole_venv }}/lib/python${python_version}/site-packages/opwen_email_client/webapp"
+    - "{{ lokole_venv }}/lib/python{{ python_ver }}/site-packages/opwen_email_client/webapp"
 
 - name: Create system {{ lokole_user }} user
   ansible.builtin.user:

roles/postgresql/tasks/install.yml

@@ -6,13 +6,18 @@
       - python3-psycopg2    # For Ansible modules {postgresql_db, postgresql_user} in Ansible collection community.postgresql -- used in moodle/tasks/install.yml
     state: present
 
+- name: Run shell command "pg_config --version" to extract MAJOR version numner -- strip off MINOR/PATCH version number(s)
+  shell: pg_config --version | sed 's/^[^0-9]*//' | sed 's/[^0-9].*//'
+  register: pg_config_version
+
+- name: 'Dynamically set Ansible var "postgresql_version: {{ pg_config_version.stdout }}"'
+  set_fact:
+    postgresql_version: "{{ pg_config_version.stdout }}"
+
 - name: Install /etc/systemd/system/postgresql-iiab.service from template (0644 by default)
   template:
     src: postgresql-iiab.service
     dest: /etc/systemd/system/postgresql-iiab.service
-    # owner: root
-    # group: root
-    # mode: '0644'
 
 - name: Create PostgreSQL data dir /library/pgsql-iiab, owned by postgres:postgres (0700)
   file:

scripts/local_facts.fact

@@ -11,7 +11,9 @@
 
 STAGE=0
 OS="none"
-VERSION_ID="none"    # This var's combined with the above, before being output
+VERSION_ID="none"    # Temp var, for: OS_VER="$OS-$VERSION_ID"
+OS_VER="none"
+PYTHON_VER="none"
 IIAB_REMOTE_URL="none"
 IIAB_BRANCH="none"
 IIAB_COMMIT="none"
@@ -63,6 +65,7 @@ OS_VER="$OS-$VERSION_ID"
     #"ubuntu-17"    | \
     #"ubuntu-18"    | \
     #"ubuntu-19"    | \
+    #"ubuntu-2004"  | \
     #"ubuntu-2104"  | \
     #"ubuntu-2110"  | \
     #"centos-7"     | \
@@ -76,7 +79,6 @@ OS_VER="$OS-$VERSION_ID"
 case $OS_VER in
     "debian-11"    | \
     "debian-12"    | \
-    "ubuntu-2004"  | \
     "ubuntu-2204"  | \
     "ubuntu-2210"  | \
     "ubuntu-2304"  | \
@@ -123,6 +125,13 @@ tmp=$(ansible --version) &&
     #ANSIBLE_VERSION=$(echo "$tmp" | head -1 | awk '{print $2}')
     #ANSIBLE_VERSION=$(echo "$tmp" | head -1 | sed -e 's/.* //')
 
+if tmp=$(python3 -c 'from sys import version_info; print("%s.%s" % (version_info.major, version_info.minor));'); then
+    PYTHON_VER=$tmp
+else
+    echo -e "\e[1m\nPython 3 is REQUIRED for Internet-in-a-Box.  You might want to run:\n\nsudo apt install python3\n\e[0m"
+    exit 1
+fi
+
 
 # THE LAST 3 BELOW ARE DIFFERENT as "systemctl is-enabled" unhelpfully returns
 # the same error code (i.e. 1) REGARDLESS whether the service is (A) disabled
@@ -159,5 +168,6 @@ cat <<EOF
 "devicetree_model"        : "$DEVICETREE_MODEL",
 "ansible_version"         : "$ANSIBLE_VERSION",
 "os"                      : "$OS",
-"os_ver"                  : "$OS_VER"}
+"os_ver"                  : "$OS_VER",
+"python_ver"              : "$PYTHON_VER"}
 EOF

vars/debian-11.yml

@@ -18,6 +18,6 @@ mysql_service: mariadb
 sshd_package: openssh-server
 sshd_service: ssh
 php_version: "7.4"
-postgresql_version: 13
+# postgresql_version: 13
 systemd_location: /lib/systemd/system
-python_ver: "3.9"
+# python_ver: "3.9"

vars/debian-12.yml

@@ -18,6 +18,6 @@ mysql_service: mariadb
 sshd_package: openssh-server
 sshd_service: ssh
 php_version: "8.1"
-postgresql_version: 15
+# postgresql_version: 15
 systemd_location: /lib/systemd/system
-python_ver: "3.10"
+# python_ver: "3.10"

vars/linuxmint-20.yml

@@ -20,6 +20,6 @@ mysql_service: mariadb
 sshd_package: openssh-server
 sshd_service: ssh
 php_version: "7.4"
-postgresql_version: 12
+# postgresql_version: 12
 systemd_location: /lib/systemd/system
-python_ver: "3.8"
+# python_ver: "3.8"

vars/linuxmint-21.yml

@@ -20,6 +20,6 @@ mysql_service: mariadb
 sshd_package: openssh-server
 sshd_service: ssh
 php_version: "8.1"
-postgresql_version: 14
+# postgresql_version: 14
 systemd_location: /lib/systemd/system
-python_ver: "3.10"
+# python_ver: "3.10"

vars/raspbian-11.yml

@@ -20,6 +20,6 @@ mysql_service: mariadb
 sshd_package: ssh
 sshd_service: ssh
 php_version: "7.4"
-postgresql_version: 13
+# postgresql_version: 13
 systemd_location: /lib/systemd/system
-python_ver: "3.9"
+# python_ver: "3.9"

vars/ubuntu-2204.yml

@@ -18,6 +18,6 @@ mysql_service: mariadb
 sshd_package: openssh-server
 sshd_service: ssh
 php_version: "8.1"
-postgresql_version: 14
+# postgresql_version: 14
 systemd_location: /lib/systemd/system
-python_ver: "3.10"
+# python_ver: "3.10"

vars/ubuntu-2210.yml

@@ -18,6 +18,6 @@ mysql_service: mariadb
 sshd_package: openssh-server
 sshd_service: ssh
 php_version: "8.1"
-postgresql_version: 14
+# postgresql_version: 14
 systemd_location: /lib/systemd/system
-python_ver: "3.10"
+# python_ver: "3.10"

vars/ubuntu-2304.yml

@@ -18,6 +18,6 @@ mysql_service: mariadb
 sshd_package: openssh-server
 sshd_service: ssh
 php_version: "8.1"
-postgresql_version: 14
+# postgresql_version: 14
 systemd_location: /lib/systemd/system
-python_ver: "3.10"
+# python_ver: "3.10"