Load .wixlib intermediates with single creator

Using a single creator ensures definitions are shared and consistent
across the entire build.

2 files changed, 17 insertions, 21 deletions

diff --git a/src/WixToolset.Core/CommandLine/BuildCommand.cs b/src/WixToolset.Core/CommandLine/BuildCommand.cs
index 87a3cd30..f754c876 100644
--- a/src/WixToolset.Core/CommandLine/BuildCommand.cs
+++ b/src/WixToolset.Core/CommandLine/BuildCommand.cs
@@ -331,27 +331,20 @@ namespace WixToolset.Core.CommandLine
 
         private IEnumerable<Intermediate> LoadLibraries(IEnumerable<string> libraryFiles, ITupleDefinitionCreator creator)
         {
-            var libraries = new List<Intermediate>();
-
-            foreach (var libraryFile in libraryFiles)
+            try
             {
-                try
-                {
-                    var library = Intermediate.Load(libraryFile, creator);
-
-                    libraries.Add(library);
-                }
-                catch (WixCorruptFileException e)
-                {
-                    this.Messaging.Write(e.Error);
-                }
-                catch (WixUnexpectedFileFormatException e)
-                {
-                    this.Messaging.Write(e.Error);
-                }
+                return Intermediate.Load(libraryFiles, creator);
+            }
+            catch (WixCorruptFileException e)
+            {
+                this.Messaging.Write(e.Error);
+            }
+            catch (WixUnexpectedFileFormatException e)
+            {
+                this.Messaging.Write(e.Error);
             }
 
-            return libraries;
+            return Array.Empty<Intermediate>();
         }
 
         private IEnumerable<Localization> LoadLocalizationFiles(IEnumerable<string> locFiles, IDictionary<string, string> preprocessorVariables)
@@ -437,7 +430,7 @@ namespace WixToolset.Core.CommandLine
             public string OutputsFile { get; private set; }
 
             public string BuiltOutputsFile { get; private set; }
-            
+
             public CommandLine(IMessaging messaging)
             {
                 this.Messaging = messaging;
diff --git a/src/WixToolset.Core/ExtensibilityServices/TupleDefinitionCreator.cs b/src/WixToolset.Core/ExtensibilityServices/TupleDefinitionCreator.cs
index b442da2b..e223e3a4 100644
--- a/src/WixToolset.Core/ExtensibilityServices/TupleDefinitionCreator.cs
+++ b/src/WixToolset.Core/ExtensibilityServices/TupleDefinitionCreator.cs
@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
 
 namespace WixToolset.Core.ExtensibilityServices
 {
@@ -23,7 +23,10 @@ namespace WixToolset.Core.ExtensibilityServices
 
         public void AddCustomTupleDefinition(IntermediateTupleDefinition definition)
         {
-            this.CustomDefinitionByName.Add(definition.Name, definition);
+            if (!this.CustomDefinitionByName.TryGetValue(definition.Name, out var existing) || definition.Revision > existing.Revision)
+            {
+                this.CustomDefinitionByName[definition.Name] = definition;
+            }
         }
 
         public bool TryGetTupleDefinitionByName(string name, out IntermediateTupleDefinition tupleDefinition)