ansible-roles/library/roles/postgresql/tasks/packages.yml

---
- block: 
  - name: Install the packages that ansible needs to manage the postgresql users and databases
    apt: pkg={{ psql_ansible_needed_pkgs }} state={{ psql_pkg_state }}

  - name: install the postgresql packages
    apt: pkg={{ postgresql_pkgs }} state={{ psql_pkg_state }}
    notify: Restart postgresql

  tags: [ 'postgresql', 'postgres' ]