Add note about installing libpq via psql

diff --git a/docs/basic/install.rst b/docs/basic/install.rst
index 8cfbffa532d20f54c09baa47af05a15a6ad0ef8a..a7c8a48abaa0a819691e8d15b1e232d35a6e9b6b 100644 (file)
--- a/docs/basic/install.rst
+++ b/docs/basic/install.rst
@@ -121,6 +121,13 @@ need::
 
     sudo apt install libpq5
 
+.. note::
+
+    The ``libpq`` is the client library used by :program:`psql`, the
+    PostgreSQL command line client, to connect to the database.  On most
+    systems, installing :program:`psql` will install the ``libpq`` too as a
+    dependency.
+
 If you are not able to fulfill this requirement please follow the `binary
 installation`_.