Emit deprecation warning for Heat.

Fixes https://github.com/wixtoolset/issues/issues/8913

1 files changed, 4 insertions, 0 deletions

diff --git a/src/tools/heat/Program.cs b/src/tools/heat/Program.cs
index f74def8f..80423e18 100644
--- a/src/tools/heat/Program.cs
+++ b/src/tools/heat/Program.cs
@@ -12,6 +12,7 @@ namespace WixToolset.Tools.Heat
     using WixToolset.Extensibility.Data;
     using WixToolset.Extensibility.Services;
     using WixToolset.Harvesters;
+    using WixToolset.Harvesters.Data;
     using WixToolset.Harvesters.Extensibility;
     using WixToolset.Tools.Core;
 
@@ -78,6 +79,9 @@ namespace WixToolset.Tools.Heat
 
             var commandLine = HeatCommandLineFactory.CreateCommandLine(serviceProvider, heatExtensions);
             var command = commandLine.ParseStandardCommandLine(arguments);
+
+            messaging.Write(HarvesterWarnings.HeatIsDeprecated());
+
             return command?.ExecuteAsync(CancellationToken.None) ?? Task.FromResult(1);
         }
     }