From e41f9387f5d8d90c55a13fd45eca22a38da0d10c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jean-Fran=C3=A7ois=20Roche?= <jfroche@pyxel.be>
Date: Wed, 8 Oct 2025 18:30:29 +0200
Subject: [PATCH] fix(pgmq): add missing helper function in migration script

pg_regress tests are failing because the helper function
pgmq._extension_exists() is missing in the 1.5.0 to 1.5.1 migration script.
This change adds the missing function to the migration script.
---
 nix/ext/pgmq.nix | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/nix/ext/pgmq.nix b/nix/ext/pgmq.nix
index 13cc987b0..0f7ab8413 100644
--- a/nix/ext/pgmq.nix
+++ b/nix/ext/pgmq.nix
@@ -60,6 +60,19 @@ let
             echo "default_version = '${version}'"
             cat $out/share/postgresql/extension/${pname}--${version}.control
           } > $out/share/postgresql/extension/${pname}.control
+          cat >> sql/pgmq--1.5.0--1.5.1.sql <<EOF
+
+        CREATE FUNCTION pgmq._extension_exists(extension_name TEXT)
+        RETURNS BOOLEAN
+        LANGUAGE SQL
+        AS \$\$
+        SELECT EXISTS (
+            SELECT 1
+            FROM pg_extension
+            WHERE extname = extension_name
+        )
+        \$\$;
+        EOF
           cp sql/*.sql $out/share/postgresql/extension
         fi