Install redmine-pgsql by entering the following commands in the terminal:
sudo apt update sudo apt install redmine-pgsql
Description:
metapackage providing PostgreSQL dependencies for Redmine
This package provides PostgreSQL dependencies for Redmine, a flexible project management web application. Install this one if you want to use a PostgreSQL database with Redmine. . Redmine package should be installed along with this package.
Homepage: https://www.redmine.org
Version: 3.4.4-1
Section: universe/web