hasql-1.9 changed Hasql.Connection.acquire to accept a list of
connection settings instead of a connection string directly.
Adapt the example executable to the new connection settings API.
--- ../app/Main.hs	2026-09-12 10:47:07.539871837 +0300
+++ ../app/Main.hs	2026-09-12 10:48:56.335184458 +0300
@@ -1,9 +1,13 @@
+{-# LANGUAGE OverloadedStrings #-}
+
 module Main where
 
 import System.IO
 import System.Exit (die)
 
 import Hasql.Connection
+import qualified Hasql.Connection.Setting as Setting
+import qualified Hasql.Connection.Setting.Connection as ConnectionSetting
 import Hasql.Notifications
 
 main :: IO ()
@@ -11,7 +15,11 @@
     hSetBuffering stdout NoBuffering
     hSetBuffering stderr NoBuffering
 
-    dbOrError <- acquire "postgres://localhost/db_name"
+    dbOrError <-
+      acquire
+        [ Setting.connection
+            (ConnectionSetting.string "postgres://localhost/db_name")
+        ]
     case dbOrError of
         Right db -> do
             let channelToListen = toPgIdentifier "sample-channel"