drop Python 2 support

Due to Python 3 being the default in all supported OSs, we may remove the logic that dealt with
detecting the OSs Python version and consequently installed a different set of packages.

- removed dependency on Python 2 packages (python-psycopg2)
- rephrased named steps in CI as it is explicitely set in `python-version`
- require Ansible 2.12 as it supports the auto-detection of the OS Python interpreter
- removed explicit setting of Python version in variables, playbooks and inventory
- removed unsupported configurations from test inventory

Author: conscribtor

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
         with:
           path: 'postgresql'
 
-      - name: Set up Python 3.
+      - name: Set up Python.
         uses: actions/setup-python@v5
         with:
           python-version: '3.x'
@@ -57,7 +57,7 @@ jobs:
         with:
           path: 'postgresql'
 
-      - name: Set up Python 3.
+      - name: Set up Python.
         uses: actions/setup-python@v5
         with:
           python-version: '3.x'

defaults/main.yml

@@ -830,8 +830,6 @@ postgresql_yum_repository_gpgkey: "{{ postgresql_pgdg_repository_url }}/keys/PGD
 postgresql_dnf_repository_baseurl: "{{ postgresql_yum_repository_url }}/{{ postgresql_version }}/fedora/fedora-{{ ansible_distribution_major_version }}-{{ ansible_architecture }}"
 postgresql_dnf_repository_gpgkey: "{{ postgresql_yum_repository_gpgkey }}"
 
-postgresql_apt_py3_dependencies: ["python3-psycopg2", "locales"]
-postgresql_apt_py2_dependencies: ["python-psycopg2", "python-pycurl", "locales"]
-postgresql_apt_dependencies: "{{ postgresql_apt_py3_dependencies if 'python3' in ansible_python_interpreter|default('') else postgresql_apt_py2_dependencies }}"
+postgresql_apt_dependencies: ["python3-psycopg2", "locales"]
 
 postgresql_hide_passwords: false

meta/main.yml

@@ -6,7 +6,7 @@ galaxy_info:
   namespace: anxs
   role_name: postgresql
   description: "Install and configure PostgreSQL, dependencies, extensions, databases and users."
-  min_ansible_version: 2.4.0
+  min_ansible_version: 2.12.0
   license: MIT
 
   platforms:

tests/docker/hosts

@@ -28,7 +28,6 @@
         name: "postgresql-{{ item }}"
         ansible_connection: docker
         ansible_user: root
-        ansible_python_interpreter: python
         groups: postgresql
         postgresql_version: "{{ item }}"
       changed_when: false

tests/docker/site.yml

@@ -1,3 +1 @@
 ---
-#--- picking the correct python interpreter
-ansible_python_interpreter: "/usr/bin/python3"

tests/vars.CentOS.7.yml

@@ -1,3 +1 @@
 ---
-#--- picking the correct python interpreter
-ansible_python_interpreter: "/usr/bin/python3"

tests/vars.CentOS.8.yml

@@ -0,0 +1 @@
+---

tests/vars.CentOS.9.yml

@@ -1,3 +1 @@
 ---
-#--- picking the correct python interpreter
-ansible_python_interpreter: "/usr/bin/python3"

tests/vars.Debian.10.yml

@@ -1,3 +1 @@
 ---
-#--- picking the correct python interpreter
-ansible_python_interpreter: "/usr/bin/python3"

tests/vars.Debian.11.yml

@@ -0,0 +1 @@
+---