Install cl-sql-postgresql by entering the following commands in the terminal:
sudo apt update sudo apt install cl-sql-postgresql
Description:
CLSQL database backend, PostgreSQL via library
This package enables you to use the CLSQL data access package with PostgreSQL databases using the PostgreSQL client library. CLSQL is a Common Lisp interface to SQL databases.
Homepage: http://clsql.kpe.io/
Version: 6.7.0-1.1
Section: universe/devel