From 04955ea2286a517660383367f2645584fd54a7b7 Mon Sep 17 00:00:00 2001
From: YoshiRulz <OSSYoshiRulz+git@gmail.com>
Date: Sun, 5 Jan 2025 21:24:09 +1000
Subject: [PATCH] Use deterministic filenames for synthesised PSX `.cue`s

resolves #4146
---
 src/BizHawk.Client.Common/RomLoader.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/BizHawk.Client.Common/RomLoader.cs b/src/BizHawk.Client.Common/RomLoader.cs
index c65a2b3f6e..e5708e0df3 100644
--- a/src/BizHawk.Client.Common/RomLoader.cs
+++ b/src/BizHawk.Client.Common/RomLoader.cs
@@ -487,7 +487,8 @@ namespace BizHawk.Client.Common
 					break;
 				case VSystemID.Raw.PSX when ext is ".bin":
 					const string FILE_EXT_CUE = ".cue";
-					var cuePath = TempFileManager.GetTempFilename(friendlyName: "syn", dotAndExtension: FILE_EXT_CUE, delete: false);
+					var crc32Digest = CRC32Checksum.ComputeDigestHex(file.GetStream().ReadAllBytes()); // slow!
+					var cuePath = Path.Combine(Path.GetTempPath(), $"synthesised for {crc32Digest}{FILE_EXT_CUE}");
 					DiscMountJob.CreateSyntheticCue(cueFilePath: cuePath, binFilePath: file.Name);
 					var gameBak = game;
 					var nextEmulatorBak = nextEmulator;