Date: 2025-06-13
Author: Danny Milosavljevic <dannym@friendly-machines.com>
Subject: Mono 6.12.0.206 can do closures but no local functions.  Use closures then :P

--- mono-msbuild-15.7.179-checkout/src/Build/BackEnd/BuildManager/BuildManager.cs.orig	2025-06-13 14:13:15.637777100 +0200
+++ mono-msbuild-15.7.179-checkout/src/Build/BackEnd/BuildManager/BuildManager.cs	2025-06-13 14:14:01.888115956 +0200
@@ -443,7 +443,7 @@
             CultureInfo parentThreadCulture = _buildParameters != null ? _buildParameters.Culture : CultureInfo.CurrentCulture;
             CultureInfo parentThreadUICulture = _buildParameters != null ? _buildParameters.UICulture : CultureInfo.CurrentUICulture;
 
-            void Callback(object state)
+            System.Threading.WaitCallback Callback = (object state) =>
             {
                 lock (_syncLock)
                 {
@@ -475,7 +475,7 @@
                     ShutdownConnectedNodesAsync(true /* abort */);
                     CheckForActiveNodesAndCleanUpSubmissions();
                 }
-            }
+            };
 
             ThreadPoolExtensions.QueueThreadPoolWorkItemWithCulture(Callback, parentThreadCulture, parentThreadUICulture);
         }