From cff466cc6d51c02681b4db4feffd7cfc0a13e0c9 Mon Sep 17 00:00:00 2001
From: Arkadiusz Hiler <ahiler@codeweavers.com>
Date: Wed, 30 Apr 2025 17:17:53 +0300
Subject: [PATCH] proton: Create prefix creation guard for unknown prefix
 versions.

---
 proton | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/proton b/proton
index 8c42064b..e0c2c528 100755
--- a/proton
+++ b/proton
@@ -769,6 +769,9 @@ class CompatData:
         except ValueError:
             log("Prefix has an invalid version?! You may want to back up user files and delete this prefix.")
             #Just let the Wine upgrade happen and hope it works...
+            with open(self.creation_sync_guard, "w"):
+                pass
+            os.sync()
             return
 
     def pfx_copy(self, src, dst, dll_copy=False):