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