From 2e1d79d05072e88686f37a63935c2d33c63b7668 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Sun, 27 Apr 2025 17:20:45 +0200
Subject: [PATCH] Do not lock table on SQLite when checking unsupported
 constraint

It is not needed as SQLite does not have an explicit lock mechanism but such
call restart the transaction anyway.
---
 trytond/trytond/model/modelsql.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/trytond/trytond/model/modelsql.py b/trytond/trytond/model/modelsql.py
index 47116b3df5..ea0e883c5d 100644
--- a/trytond/trytond/model/modelsql.py
+++ b/trytond/trytond/model/modelsql.py
@@ -2187,7 +2187,8 @@ class ModelSQL(ModelStorage):
                 continue
             table = sql.table
             if isinstance(sql, (Unique, Exclude)):
-                cls.lock()
+                if backend.name != 'sqlite':
+                    cls.lock()
                 if not database.has_range():
                     columns = []
                     for col in sql.columns: