From 58e335f3dc9788f5e82d136526adf28b707f2724 Mon Sep 17 00:00:00 2001
From: Rick van Schijndel <rol3517@gmail.com>
Date: Sun, 11 Jan 2026 15:38:10 +0100
Subject: [PATCH] postgresqlTestHook: explicitly set encoding to UTF8

Otherwise it appears to default to ASCII, causing issues with the tests from
libpqxx. It may also affect other use cases where unicode/utf8 characters
are used in tests.

Related to https://github.com/NixOS/nixpkgs/pull/476936 where the tests are enabled
and the issues with the encoding have popped up.
---
 pkgs/by-name/po/postgresqlTestHook/postgresql-test-hook.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/by-name/po/postgresqlTestHook/postgresql-test-hook.sh b/pkgs/by-name/po/postgresqlTestHook/postgresql-test-hook.sh
index 41762121882b..f36a384b6fb4 100644
--- a/pkgs/by-name/po/postgresqlTestHook/postgresql-test-hook.sh
+++ b/pkgs/by-name/po/postgresqlTestHook/postgresql-test-hook.sh
@@ -54,7 +54,7 @@ EOF
     false
   fi
   echo 'initializing postgresql'
-  initdb -U postgres
+  initdb --encoding=UTF8 -U postgres
 
   echo "$postgresqlExtraSettings" >>"$PGDATA/postgresql.conf"