From bd786a0e950e0f1de79adadd28891c857a5d9725 Mon Sep 17 00:00:00 2001
From: James Groom <OSSYoshiRulz+GitHub@gmail.com>
Date: Wed, 29 May 2024 10:36:38 +1000
Subject: [PATCH] Downgrade `<LangVersion/>` for external .NET projects

fixes 62b8ec457
---
 Common.props            | 2 +-
 src/MainSlnCommon.props | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Common.props b/Common.props
index bbe207169d..75784b774c 100644
--- a/Common.props
+++ b/Common.props
@@ -16,7 +16,7 @@
 		<ErrorReport>prompt</ErrorReport>
 		<Features>strict</Features>
 		<IsTargetingNetFramework>$(TargetFramework.StartsWith("net4"))</IsTargetingNetFramework>
-		<LangVersion>12.0</LangVersion>
+		<LangVersion>10.0</LangVersion>
 		<ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
 		<NoWarn>SA0001</NoWarn>
 		<Nullable>enable</Nullable>
diff --git a/src/MainSlnCommon.props b/src/MainSlnCommon.props
index 41656d2448..860e58c28b 100644
--- a/src/MainSlnCommon.props
+++ b/src/MainSlnCommon.props
@@ -5,6 +5,7 @@
 		<DebugType>embedded</DebugType>
 		<DefineConstants>$(DefineConstants);AVI_SUPPORT</DefineConstants>
 		<GenerateDocumentationFile>true</GenerateDocumentationFile> <!-- it would be nice to rename these to *.api_reference.xml or something, but it seems https://github.com/dotnet/standard/issues/614 was never fixed -->
+		<LangVersion>12.0</LangVersion>
 		<NoWarn>$(NoWarn);CS1573;CS1591;NU1702</NoWarn>
 		<ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>None</ResolveAssemblyWarnOrErrorOnTargetArchitectureMismatch>
 	</PropertyGroup>