27 files changed, 0 insertions, 703 deletions
diff --git a/src/ext/DifxApp/DifxApp.wixext.sln b/src/ext/DifxApp/DifxApp.wixext.sln
deleted file mode 100644
index d212c773..00000000
--- a/src/ext/DifxApp/DifxApp.wixext.sln
+++ /dev/null
@@ -1,63 +0,0 @@
-Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Version 16
-VisualStudioVersion = 16.0.30611.23
-MinimumVisualStudioVersion = 15.0.26124.0
-Project("{930C7802-8A8C-48F9-8165-68863BCCD9DD}") = "difxapp", "wixlib\difxapp.wixproj", "{5066EB93-D8F7-4FAE-B687-024D7A81BD95}"
-EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "WixToolset.DifxApp.wixext", "wixext\WixToolset.DifxApp.wixext.csproj", "{2256EFD7-E678-4485-818D-986D590068BE}"
-EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "WixToolsetTest.DifxApp", "test\WixToolsetTest.DifxApp\WixToolsetTest.DifxApp.csproj", "{883D7BA3-1ADC-47AC-95B0-221BB0B7788D}"
-EndProject
-Global
-        GlobalSection(SolutionConfigurationPlatforms) = preSolution
-                Debug|Any CPU = Debug|Any CPU
-                Debug|x64 = Debug|x64
-                Debug|x86 = Debug|x86
-                Release|Any CPU = Release|Any CPU
-                Release|x64 = Release|x64
-                Release|x86 = Release|x86
-        EndGlobalSection
-        GlobalSection(ProjectConfigurationPlatforms) = postSolution
-                {5066EB93-D8F7-4FAE-B687-024D7A81BD95}.Debug|Any CPU.ActiveCfg = Debug|x86
-                {5066EB93-D8F7-4FAE-B687-024D7A81BD95}.Debug|Any CPU.Build.0 = Debug|x86
-                {5066EB93-D8F7-4FAE-B687-024D7A81BD95}.Debug|x64.ActiveCfg = Debug|x86
-                {5066EB93-D8F7-4FAE-B687-024D7A81BD95}.Debug|x86.ActiveCfg = Debug|x86
-                {5066EB93-D8F7-4FAE-B687-024D7A81BD95}.Debug|x86.Build.0 = Debug|x86
-                {5066EB93-D8F7-4FAE-B687-024D7A81BD95}.Release|Any CPU.ActiveCfg = Release|x86
-                {5066EB93-D8F7-4FAE-B687-024D7A81BD95}.Release|Any CPU.Build.0 = Release|x86
-                {5066EB93-D8F7-4FAE-B687-024D7A81BD95}.Release|x64.ActiveCfg = Release|x86
-                {5066EB93-D8F7-4FAE-B687-024D7A81BD95}.Release|x86.ActiveCfg = Release|x86
-                {5066EB93-D8F7-4FAE-B687-024D7A81BD95}.Release|x86.Build.0 = Release|x86
-                {2256EFD7-E678-4485-818D-986D590068BE}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-                {2256EFD7-E678-4485-818D-986D590068BE}.Debug|Any CPU.Build.0 = Debug|Any CPU
-                {2256EFD7-E678-4485-818D-986D590068BE}.Debug|x64.ActiveCfg = Debug|Any CPU
-                {2256EFD7-E678-4485-818D-986D590068BE}.Debug|x64.Build.0 = Debug|Any CPU
-                {2256EFD7-E678-4485-818D-986D590068BE}.Debug|x86.ActiveCfg = Debug|Any CPU
-                {2256EFD7-E678-4485-818D-986D590068BE}.Debug|x86.Build.0 = Debug|Any CPU
-                {2256EFD7-E678-4485-818D-986D590068BE}.Release|Any CPU.ActiveCfg = Release|Any CPU
-                {2256EFD7-E678-4485-818D-986D590068BE}.Release|Any CPU.Build.0 = Release|Any CPU
-                {2256EFD7-E678-4485-818D-986D590068BE}.Release|x64.ActiveCfg = Release|Any CPU
-                {2256EFD7-E678-4485-818D-986D590068BE}.Release|x64.Build.0 = Release|Any CPU
-                {2256EFD7-E678-4485-818D-986D590068BE}.Release|x86.ActiveCfg = Release|Any CPU
-                {2256EFD7-E678-4485-818D-986D590068BE}.Release|x86.Build.0 = Release|Any CPU
-                {883D7BA3-1ADC-47AC-95B0-221BB0B7788D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-                {883D7BA3-1ADC-47AC-95B0-221BB0B7788D}.Debug|Any CPU.Build.0 = Debug|Any CPU
-                {883D7BA3-1ADC-47AC-95B0-221BB0B7788D}.Debug|x64.ActiveCfg = Debug|Any CPU
-                {883D7BA3-1ADC-47AC-95B0-221BB0B7788D}.Debug|x64.Build.0 = Debug|Any CPU
-                {883D7BA3-1ADC-47AC-95B0-221BB0B7788D}.Debug|x86.ActiveCfg = Debug|Any CPU
-                {883D7BA3-1ADC-47AC-95B0-221BB0B7788D}.Debug|x86.Build.0 = Debug|Any CPU
-                {883D7BA3-1ADC-47AC-95B0-221BB0B7788D}.Release|Any CPU.ActiveCfg = Release|Any CPU
-                {883D7BA3-1ADC-47AC-95B0-221BB0B7788D}.Release|Any CPU.Build.0 = Release|Any CPU
-                {883D7BA3-1ADC-47AC-95B0-221BB0B7788D}.Release|x64.ActiveCfg = Release|Any CPU
-                {883D7BA3-1ADC-47AC-95B0-221BB0B7788D}.Release|x64.Build.0 = Release|Any CPU
-                {883D7BA3-1ADC-47AC-95B0-221BB0B7788D}.Release|x86.ActiveCfg = Release|Any CPU
-                {883D7BA3-1ADC-47AC-95B0-221BB0B7788D}.Release|x86.Build.0 = Release|Any CPU
-        EndGlobalSection
-        GlobalSection(SolutionProperties) = preSolution
-                HideSolutionNode = FALSE
-        EndGlobalSection
-        GlobalSection(ExtensibilityGlobals) = postSolution
-                SolutionGuid = {60A3EA0F-9313-47F8-BF6B-74478A57B577}
-        EndGlobalSection
-EndGlobal
diff --git a/src/ext/DifxApp/Directory.Build.props b/src/ext/DifxApp/Directory.Build.props
deleted file mode 100644
index 4697cf0c..00000000
--- a/src/ext/DifxApp/Directory.Build.props
+++ /dev/null
@@ -1,10 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- 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. -->
-<Project>
-  <PropertyGroup>
-    <SegmentName>DifxApp.wixext</SegmentName>
-  </PropertyGroup>
-  <Import Project="..\..\Directory.Build.props" />
-</Project>
diff --git a/src/ext/DifxApp/README.md b/src/ext/DifxApp/README.md
deleted file mode 100644
index 49f30df8..00000000
--- a/src/ext/DifxApp/README.md
+++ /dev/null
@@ -1,2 +0,0 @@
-# DifxApp.wixext
-WixToolset.DifxApp.wixext - DIFxApp WiX Toolset Extension
diff --git a/src/ext/DifxApp/difxapp.cmd b/src/ext/DifxApp/difxapp.cmd
deleted file mode 100644
index 3f822453..00000000
--- a/src/ext/DifxApp/difxapp.cmd
+++ /dev/null
@@ -1,21 +0,0 @@
-@setlocal
-@pushd %~dp0
-@set _C=Debug
-:parse_args
-@if /i "%1"=="release" set _C=Release
-@if not "%1"=="" shift & goto parse_args
-@echo DifxApp.wixext build %_C%
-:: Build
-msbuild -Restore -p:Configuration=%_C% || exit /b
-:: Test
-dotnet test -c %_C% --no-build test\WixToolsetTest.DifxApp || exit /b
-:: Pack
-msbuild -t:Pack -p:Configuration=%_C% -p:NoBuild=true wixext\WixToolset.DifxApp.wixext.csproj || exit /b
-@popd
-@endlocal
diff --git a/src/ext/DifxApp/test/WixToolsetTest.DifxApp/DifxAppExtensionFixture.cs b/src/ext/DifxApp/test/WixToolsetTest.DifxApp/DifxAppExtensionFixture.cs
deleted file mode 100644
index d132952f..00000000
--- a/src/ext/DifxApp/test/WixToolsetTest.DifxApp/DifxAppExtensionFixture.cs
+++ /dev/null
@@ -1,46 +0,0 @@
-// 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 WixToolsetTest.DifxApp
-{
-    using System;
-    using System.IO;
-    using System.Linq;
-    using WixInternal.TestSupport;
-    using WixInternal.Core.TestPackage;
-    using WixToolset.DifxApp;
-    using Xunit;
-    public class DifxAppExtensionFixture
-    {
-        [Fact]
-        public void CanBuildUsingDriver()
-        {
-            var folder = TestData.Get(@"TestData\UsingDriver");
-            var build = new Builder(folder, typeof(DifxAppExtensionFactory), new[] { folder });
-            var results = build.BuildAndQuery(Build, "CustomAction");
-            WixAssert.CompareLineByLine(new[]
-            {
-                "CustomAction:MsiCleanupOnSuccess\t1\tDIFxAppx64\tCleanupOnSuccess\t",
-                "CustomAction:MsiInstallDrivers\t3073\tDIFxAppAx64\tInstallDriverPackages\t",
-                "CustomAction:MsiProcessDrivers\t1\tDIFxAppx64\tProcessDriverPackages\t",
-                "CustomAction:MsiRollbackInstall\t3329\tDIFxAppAx64\tRollbackInstall\t",
-                "CustomAction:MsiUninstallDrivers\t3073\tDIFxAppAx64\tUninstallDriverPackages\t",
-            }, results);
-        }
-        private static void Build(string[] args)
-        {
-            var newArgs = args.ToList();
-            newArgs.Add("-platform");
-            newArgs.Add("x64");
-            var extDir = Path.GetDirectoryName(new Uri(typeof(DifxAppExtensionFactory).Assembly.CodeBase).LocalPath);
-            newArgs.Add(Path.Combine(extDir, "..", "difxapp_x64.wixlib"));
-            var result = WixRunner.Execute(warningsAsErrors: false, newArgs.ToArray()).AssertSuccess();
-            Assert.Single(result.Messages.Where(m => m.Id == (int)WixToolset.Data.WarningMessages.Ids.DeprecatedElement));
-        }
-    }
-}
diff --git a/src/ext/DifxApp/test/WixToolsetTest.DifxApp/TestData/UsingDriver/Package.en-us.wxl b/src/ext/DifxApp/test/WixToolsetTest.DifxApp/TestData/UsingDriver/Package.en-us.wxl
deleted file mode 100644
index f1df1234..00000000
--- a/src/ext/DifxApp/test/WixToolsetTest.DifxApp/TestData/UsingDriver/Package.en-us.wxl
+++ /dev/null
@@ -1,9 +0,0 @@
-<!--
-This file contains the declaration of all the localizable strings.
-->
-<WixLocalization xmlns="http://wixtoolset.org/schemas/v4/wxl" Culture="en-US">
-  <String Id="DowngradeError" Value="A newer version of [ProductName] is already installed." />
-  <String Id="FeatureTitle" Value="MsiPackage" />
-</WixLocalization>
diff --git a/src/ext/DifxApp/test/WixToolsetTest.DifxApp/TestData/UsingDriver/Package.wxs b/src/ext/DifxApp/test/WixToolsetTest.DifxApp/TestData/UsingDriver/Package.wxs
deleted file mode 100644
index 411893bc..00000000
--- a/src/ext/DifxApp/test/WixToolsetTest.DifxApp/TestData/UsingDriver/Package.wxs
+++ /dev/null
@@ -1,15 +0,0 @@
-<Wix xmlns="http://wixtoolset.org/schemas/v4/wxs">
-  <Package Name="MsiPackage" Language="1033" Version="1.0.0.0" Manufacturer="Example Corporation" UpgradeCode="047730a5-30fe-4a62-a520-da9381b8226a">
-    <MajorUpgrade DowngradeErrorMessage="!(loc.DowngradeError)" />
-    <Feature Id="ProductFeature" Title="!(loc.FeatureTitle)">
-      <ComponentGroupRef Id="ProductComponents" />
-    </Feature>
-  </Package>
-  <Fragment>
-    <StandardDirectory Id="ProgramFilesFolder">
-      <Directory Id="INSTALLFOLDER" Name="MsiPackage" />
-    </StandardDirectory>
-  </Fragment>
-</Wix>
diff --git a/src/ext/DifxApp/test/WixToolsetTest.DifxApp/TestData/UsingDriver/PackageComponents.wxs b/src/ext/DifxApp/test/WixToolsetTest.DifxApp/TestData/UsingDriver/PackageComponents.wxs
deleted file mode 100644
index 9609771a..00000000
--- a/src/ext/DifxApp/test/WixToolsetTest.DifxApp/TestData/UsingDriver/PackageComponents.wxs
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Wix xmlns="http://wixtoolset.org/schemas/v4/wxs"
-     xmlns:difxapp="http://wixtoolset.org/schemas/v4/wxs/difxapp">
-  <Fragment>
-    <ComponentGroup Id="ProductComponents" Directory="INSTALLFOLDER">
-       <Component>
-           <File Source="example.txt" />
-           <difxapp:Driver />
-       </Component>
-    </ComponentGroup>
-  </Fragment>
-</Wix>
diff --git a/src/ext/DifxApp/test/WixToolsetTest.DifxApp/TestData/UsingDriver/example.txt b/src/ext/DifxApp/test/WixToolsetTest.DifxApp/TestData/UsingDriver/example.txt
deleted file mode 100644
index 1b4ffe8a..00000000
--- a/src/ext/DifxApp/test/WixToolsetTest.DifxApp/TestData/UsingDriver/example.txt
+++ /dev/null
@@ -1 +0,0 @@
-This is example.txt.
-\ No newline at end of file
diff --git a/src/ext/DifxApp/test/WixToolsetTest.DifxApp/WixToolsetTest.DifxApp.csproj b/src/ext/DifxApp/test/WixToolsetTest.DifxApp/WixToolsetTest.DifxApp.csproj
deleted file mode 100644
index d7176efa..00000000
--- a/src/ext/DifxApp/test/WixToolsetTest.DifxApp/WixToolsetTest.DifxApp.csproj
+++ /dev/null
@@ -1,24 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- 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. -->
-<Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <TargetFramework>net6.0</TargetFramework>
-    <IsWixTestProject>true</IsWixTestProject>
-  </PropertyGroup>
-  <ItemGroup>
-    <Content Include="TestData\UsingDriver\example.txt" CopyToOutputDirectory="PreserveNewest" />
-    <Content Include="TestData\UsingDriver\Package.en-us.wxl" CopyToOutputDirectory="PreserveNewest" />
-    <Content Include="TestData\UsingDriver\Package.wxs" CopyToOutputDirectory="PreserveNewest" />
-    <Content Include="TestData\UsingDriver\PackageComponents.wxs" CopyToOutputDirectory="PreserveNewest" />
-  </ItemGroup>
-  <ItemGroup>
-    <ProjectReference Include="..\..\wixext\WixToolset.DifxApp.wixext.csproj" />
-  </ItemGroup>
-  <ItemGroup>
-    <PackageReference Include="WixInternal.Core.TestPackage" />
-  </ItemGroup>
-</Project>
diff --git a/src/ext/DifxApp/wixext/DifxAppCompiler.cs b/src/ext/DifxApp/wixext/DifxAppCompiler.cs
deleted file mode 100644
index 6f32a60b..00000000
--- a/src/ext/DifxApp/wixext/DifxAppCompiler.cs
+++ /dev/null
@@ -1,155 +0,0 @@
-// 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.DifxApp
-{
-    using System;
-    using System.Collections.Generic;
-    using System.Xml.Linq;
-    using WixToolset.Data;
-    using WixToolset.DifxApp.Symbols;
-    using WixToolset.Extensibility;
-    /// <summary>
-    /// The compiler for the WiX Toolset Driver Install Frameworks for Applications Extension.
-    /// </summary>
-    public sealed class DifxAppCompiler : BaseCompilerExtension
-    {
-        private HashSet<string> components;
-        public override XNamespace Namespace => "http://wixtoolset.org/schemas/v4/wxs/difxapp";
-        /// <summary>
-        /// Instantiate a new DifxAppCompiler.
-        /// </summary>
-        public DifxAppCompiler()
-        {
-            this.components = new HashSet<string>();
-        }
-        /// <summary>
-        /// Processes an element for the Compiler.
-        /// </summary>
-        /// <param name="sourceLineNumbers">Source line number for the parent element.</param>
-        /// <param name="parentElement">Parent element of element to process.</param>
-        /// <param name="element">Element to process.</param>
-        /// <param name="contextValues">Extra information about the context in which this element is being parsed.</param>
-        public override void ParseElement(Intermediate intermediate, IntermediateSection section, XElement parentElement, XElement element, IDictionary<string, string> context)
-        {
-            switch (parentElement.Name.LocalName)
-            {
-                case "Component":
-                    var componentId = context["ComponentId"];
-                    var componentWin64 = Boolean.Parse(context["Win64"]);
-                    switch (element.Name.LocalName)
-                    {
-                        case "Driver":
-                            this.ParseDriverElement(intermediate, section, element, componentId, componentWin64);
-                            break;
-                        default:
-                            this.ParseHelper.UnexpectedElement(parentElement, element);
-                            break;
-                    }
-                    break;
-                default:
-                    this.ParseHelper.UnexpectedElement(parentElement, element);
-                    break;
-            }
-        }
-        /// <summary>
-        /// Parses a Driver element.
-        /// </summary>
-        /// <param name="node">Element to parse.</param>
-        /// <param name="componentId">Identifier for parent component.</param>
-        private void ParseDriverElement(Intermediate intermediate, IntermediateSection section, XElement node, string componentId, bool win64)
-        {
-            var sourceLineNumbers = this.ParseHelper.GetSourceLineNumbers(node);
-            int attributes = 0;
-            var sequence = CompilerConstants.IntegerNotSet;
-            // See https://github.com/wixtoolset/issues/issues/6648. DifxApp is deprecated so warn the user.
-            this.Messaging.Write(WarningMessages.DeprecatedElement(sourceLineNumbers, node.Name.LocalName));
-            // check the number of times a Driver element has been nested under this Component element
-            if (null != componentId)
-            {
-                if (this.components.Contains(componentId))
-                {
-                    this.Messaging.Write(ErrorMessages.TooManyElements(sourceLineNumbers, "Component", node.Name.LocalName, 1));
-                }
-                else
-                {
-                    this.components.Add(componentId);
-                }
-            }
-            foreach (var attrib in node.Attributes())
-            {
-                if (String.IsNullOrEmpty(attrib.Name.NamespaceName) || this.Namespace == attrib.Name.Namespace)
-                {
-                    switch (attrib.Name.LocalName)
-                    {
-                    case "AddRemovePrograms":
-                        if (YesNoType.No == this.ParseHelper.GetAttributeYesNoValue(sourceLineNumbers, attrib))
-                        {
-                            attributes |= 0x4;
-                        }
-                        break;
-                    case "DeleteFiles":
-                        if (YesNoType.Yes == this.ParseHelper.GetAttributeYesNoValue(sourceLineNumbers, attrib))
-                        {
-                            attributes |= 0x10;
-                        }
-                        break;
-                    case "ForceInstall":
-                        if (YesNoType.Yes == this.ParseHelper.GetAttributeYesNoValue(sourceLineNumbers, attrib))
-                        {
-                            attributes |= 0x1;
-                        }
-                        break;
-                    case "Legacy":
-                        if (YesNoType.Yes == this.ParseHelper.GetAttributeYesNoValue(sourceLineNumbers, attrib))
-                        {
-                            attributes |= 0x8;
-                        }
-                        break;
-                    case "PlugAndPlayPrompt":
-                        if (YesNoType.No == this.ParseHelper.GetAttributeYesNoValue(sourceLineNumbers, attrib))
-                        {
-                            attributes |= 0x2;
-                        }
-                        break;
-                    case "Sequence":
-                        sequence = this.ParseHelper.GetAttributeIntegerValue(sourceLineNumbers, attrib, 0, int.MaxValue);
-                        break;
-                    default:
-                        this.ParseHelper.UnexpectedAttribute(node, attrib);
-                        break;
-                    }
-                }
-                else
-                {
-                    this.ParseHelper.ParseExtensionAttribute(this.Context.Extensions, intermediate, section, node, attrib);
-                }
-            }
-            this.ParseHelper.ParseForExtensionElements(this.Context.Extensions, intermediate, section, node);
-            if (!this.Messaging.EncounteredError)
-            {
-                this.ParseHelper.CreateSimpleReference(section, sourceLineNumbers, SymbolDefinitions.CustomAction, "MsiProcessDrivers");
-                var symbol = section.AddSymbol(new MsiDriverPackagesSymbol(sourceLineNumbers)
-                {
-                    ComponentRef = componentId,
-                    Flags = attributes,
-                });
-                if (CompilerConstants.IntegerNotSet != sequence)
-                {
-                    symbol.Sequence = sequence;
-                }
-            }
-        }
-    }
-}
diff --git a/src/ext/DifxApp/wixext/DifxAppDecompiler.cs b/src/ext/DifxApp/wixext/DifxAppDecompiler.cs
deleted file mode 100644
index e41d8b98..00000000
--- a/src/ext/DifxApp/wixext/DifxAppDecompiler.cs
+++ /dev/null
@@ -1,98 +0,0 @@
-// 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.DifxApp
-{
-#if TODO_CONSIDER_DECOMPILER
-    using System;
-    using System.Collections;
-    using System.Globalization;
-    using WixToolset.Data;
-    using WixToolset.Extensibility;
-    using DifxApp = WixToolset.Extensions.Serialize.DifxApp;
-    using Wix = WixToolset.Data.Serialize;
-    /// <summary>
-    /// The decompiler for the WiX Toolset Driver Install Frameworks for Applications Extension.
-    /// </summary>
-    public sealed class DifxAppDecompiler : DecompilerExtension
-    {
-        /// <summary>
-        /// Creates a decompiler for Gaming Extension.
-        /// </summary>
-        public DifxAppDecompiler()
-        {
-            this.TableDefinitions = DifxAppExtensionData.GetExtensionTableDefinitions();
-        }
-        /// <summary>
-        /// Decompiles an extension table.
-        /// </summary>
-        /// <param name="table">The table to decompile.</param>
-        public override void DecompileTable(Table table)
-        {
-            switch (table.Name)
-            {
-                case "MsiDriverPackages":
-                    this.DecompileMsiDriverPackagesTable(table);
-                    break;
-                default:
-                    base.DecompileTable(table);
-                    break;
-            }
-        }
-        /// <summary>
-        /// Decompile the MsiDriverPackages table.
-        /// </summary>
-        /// <param name="table">The table to decompile.</param>
-        private void DecompileMsiDriverPackagesTable(Table table)
-        {
-            foreach (Row row in table.Rows)
-            {
-                DifxApp.Driver driver = new DifxApp.Driver();
-                int attributes = (int)row[1];
-                if (0x1 == (attributes & 0x1))
-                {
-                    driver.ForceInstall = DifxApp.YesNoType.yes;
-                }
-                if (0x2 == (attributes & 0x2))
-                {
-                    driver.PlugAndPlayPrompt = DifxApp.YesNoType.no;
-                }
-                if (0x4 == (attributes & 0x4))
-                {
-                    driver.AddRemovePrograms = DifxApp.YesNoType.no;
-                }
-                if (0x8 == (attributes & 0x8))
-                {
-                    driver.Legacy = DifxApp.YesNoType.yes;
-                }
-                if (0x10 == (attributes & 0x10))
-                {
-                    driver.DeleteFiles = DifxApp.YesNoType.yes;
-                }
-                if (null != row[2])
-                {
-                    driver.Sequence = (int)row[2];
-                }
-                Wix.Component component = (Wix.Component)this.Core.GetIndexedElement("Component", (string)row[0]);
-                if (null != component)
-                {
-                    component.AddChild(driver);
-                }
-                else
-                {
-                    this.Core.OnMessage(WixWarnings.ExpectedForeignRow(row.SourceLineNumbers, table.Name, row.GetPrimaryKey(DecompilerConstants.PrimaryKeyDelimiter), "Component", (string)row[0], "Component"));
-                }
-            }
-        }
-    }
-#endif
-}
diff --git a/src/ext/DifxApp/wixext/DifxAppExtensionData.cs b/src/ext/DifxApp/wixext/DifxAppExtensionData.cs
deleted file mode 100644
index 5552717c..00000000
--- a/src/ext/DifxApp/wixext/DifxAppExtensionData.cs
+++ /dev/null
@@ -1,18 +0,0 @@
-// 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.DifxApp
-{
-    using WixToolset.Data;
-    using WixToolset.Extensibility;
-    public sealed class DifxAppExtensionData : BaseExtensionData
-    {
-        public override string DefaultCulture => "en-US";
-        public override bool TryGetSymbolDefinitionByName(string name, out IntermediateSymbolDefinition symbolDefinition)
-        {
-            symbolDefinition = DifxAppSymbolDefinitions.ByName(name);
-            return symbolDefinition != null;
-        }
-    }
-}
diff --git a/src/ext/DifxApp/wixext/DifxAppExtensionFactory.cs b/src/ext/DifxApp/wixext/DifxAppExtensionFactory.cs
deleted file mode 100644
index 3932685d..00000000
--- a/src/ext/DifxApp/wixext/DifxAppExtensionFactory.cs
+++ /dev/null
@@ -1,18 +0,0 @@
-// 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.DifxApp
-{
-    using System;
-    using System.Collections.Generic;
-    using WixToolset.Extensibility;
-    public class DifxAppExtensionFactory : BaseExtensionFactory
-    {
-        protected override IReadOnlyCollection<Type> ExtensionTypes => new[]
-        {
-            typeof(DifxAppCompiler),
-            typeof(DifxAppExtensionData),
-            typeof(DifxAppWindowsInstallerBackendBinderExtension),
-        };
-    }
-}
diff --git a/src/ext/DifxApp/wixext/DifxAppTableDefinitions.cs b/src/ext/DifxApp/wixext/DifxAppTableDefinitions.cs
deleted file mode 100644
index a6c26444..00000000
--- a/src/ext/DifxApp/wixext/DifxAppTableDefinitions.cs
+++ /dev/null
@@ -1,26 +0,0 @@
-// 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.DifxApp
-{
-    using WixToolset.Data.WindowsInstaller;
-    public static class DifxAppTableDefinitions
-    {
-        public static readonly TableDefinition MsiDriverPackages = new TableDefinition(
-            "MsiDriverPackages",
-            DifxAppSymbolDefinitions.MsiDriverPackages,
-            new[]
-            {
-                new ColumnDefinition("Component", ColumnType.String, 72, primaryKey: true, nullable: false, ColumnCategory.Identifier, keyTable: "Component", keyColumn: 1, description: "Name of the component that represents the driver package", modularizeType: ColumnModularizeType.Column),
-                new ColumnDefinition("Flags", ColumnType.Number, 4, primaryKey: false, nullable: false, ColumnCategory.Unknown, minValue: 0, maxValue: 31, description: "Flags for installing and uninstalling driver packages"),
-                new ColumnDefinition("Sequence", ColumnType.Number, 4, primaryKey: false, nullable: true, ColumnCategory.Unknown, minValue: 0, description: "Order in which the driver packages are processed"),
-            },
-            symbolIdIsPrimaryKey: false
-        );
-        public static readonly TableDefinition[] All = new[]
-        {
-            MsiDriverPackages,
-        };
-    }
-}
diff --git a/src/ext/DifxApp/wixext/DifxAppWindowsInstallerBackendBinderExtension.cs b/src/ext/DifxApp/wixext/DifxAppWindowsInstallerBackendBinderExtension.cs
deleted file mode 100644
index 41f01175..00000000
--- a/src/ext/DifxApp/wixext/DifxAppWindowsInstallerBackendBinderExtension.cs
+++ /dev/null
@@ -1,13 +0,0 @@
-// 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.DifxApp
-{
-    using System.Collections.Generic;
-    using WixToolset.Data.WindowsInstaller;
-    using WixToolset.Extensibility;
-    public class DifxAppWindowsInstallerBackendBinderExtension : BaseWindowsInstallerBackendBinderExtension
-    {
-        public override IReadOnlyCollection<TableDefinition> TableDefinitions => DifxAppTableDefinitions.All;
-    }
-}
diff --git a/src/ext/DifxApp/wixext/Symbols/DifxAppSymbolDefinitions.cs b/src/ext/DifxApp/wixext/Symbols/DifxAppSymbolDefinitions.cs
deleted file mode 100644
index c1f9673a..00000000
--- a/src/ext/DifxApp/wixext/Symbols/DifxAppSymbolDefinitions.cs
+++ /dev/null
@@ -1,37 +0,0 @@
-// 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.DifxApp
-{
-    using System;
-    using WixToolset.Data;
-    public enum DifxAppSymbolDefinitionType
-    {
-        MsiDriverPackages,
-    }
-    public static partial class DifxAppSymbolDefinitions
-    {
-        public static IntermediateSymbolDefinition ByName(string name)
-        {
-            if (!Enum.TryParse(name, out DifxAppSymbolDefinitionType type))
-            {
-                return null;
-            }
-            return ByType(type);
-        }
-        public static IntermediateSymbolDefinition ByType(DifxAppSymbolDefinitionType type)
-        {
-            switch (type)
-            {
-                case DifxAppSymbolDefinitionType.MsiDriverPackages:
-                    return DifxAppSymbolDefinitions.MsiDriverPackages;
-                default:
-                    throw new ArgumentOutOfRangeException(nameof(type));
-            }
-        }
-    }
-}
diff --git a/src/ext/DifxApp/wixext/Symbols/MsiDriverPackagesSymbol.cs b/src/ext/DifxApp/wixext/Symbols/MsiDriverPackagesSymbol.cs
deleted file mode 100644
index 2fd91bc8..00000000
--- a/src/ext/DifxApp/wixext/Symbols/MsiDriverPackagesSymbol.cs
+++ /dev/null
@@ -1,63 +0,0 @@
-// 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.DifxApp
-{
-    using WixToolset.Data;
-    using WixToolset.DifxApp.Symbols;
-    public static partial class DifxAppSymbolDefinitions
-    {
-        public static readonly IntermediateSymbolDefinition MsiDriverPackages = new IntermediateSymbolDefinition(
-            DifxAppSymbolDefinitionType.MsiDriverPackages.ToString(),
-            new[]
-            {
-                new IntermediateFieldDefinition(nameof(MsiDriverPackagesSymbolFields.ComponentRef), IntermediateFieldType.String),
-                new IntermediateFieldDefinition(nameof(MsiDriverPackagesSymbolFields.Flags), IntermediateFieldType.Number),
-                new IntermediateFieldDefinition(nameof(MsiDriverPackagesSymbolFields.Sequence), IntermediateFieldType.Number),
-            },
-            typeof(MsiDriverPackagesSymbol));
-    }
-}
-namespace WixToolset.DifxApp.Symbols
-{
-    using WixToolset.Data;
-    public enum MsiDriverPackagesSymbolFields
-    {
-        ComponentRef,
-        Flags,
-        Sequence,
-    }
-    public class MsiDriverPackagesSymbol : IntermediateSymbol
-    {
-        public MsiDriverPackagesSymbol() : base(DifxAppSymbolDefinitions.MsiDriverPackages, null, null)
-        {
-        }
-        public MsiDriverPackagesSymbol(SourceLineNumber sourceLineNumber, Identifier id = null) : base(DifxAppSymbolDefinitions.MsiDriverPackages, sourceLineNumber, id)
-        {
-        }
-        public IntermediateField this[MsiDriverPackagesSymbolFields index] => this.Fields[(int)index];
-        public string ComponentRef
-        {
-            get => this.Fields[(int)MsiDriverPackagesSymbolFields.ComponentRef].AsString();
-            set => this.Set((int)MsiDriverPackagesSymbolFields.ComponentRef, value);
-        }
-        public int Flags
-        {
-            get => this.Fields[(int)MsiDriverPackagesSymbolFields.Flags].AsNumber();
-            set => this.Set((int)MsiDriverPackagesSymbolFields.Flags, value);
-        }
-        public int? Sequence
-        {
-            get => this.Fields[(int)MsiDriverPackagesSymbolFields.Sequence].AsNullableNumber();
-            set => this.Set((int)MsiDriverPackagesSymbolFields.Sequence, value);
-        }
-    }
-}
-\ No newline at end of file
diff --git a/src/ext/DifxApp/wixext/WixToolset.DifxApp.wixext.csproj b/src/ext/DifxApp/wixext/WixToolset.DifxApp.wixext.csproj
deleted file mode 100644
index 75ea81ec..00000000
--- a/src/ext/DifxApp/wixext/WixToolset.DifxApp.wixext.csproj
+++ /dev/null
@@ -1,24 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- 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. -->
-<Project Sdk="Microsoft.NET.Sdk">
-  <PropertyGroup>
-    <TargetFramework>netstandard2.0</TargetFramework>
-    <RootNamespace>WixToolset.DifxApp</RootNamespace>
-    <Description>WiX Toolset DIFxApp Extension</Description>
-    <Title>WiX Toolset DIFxApp Extension</Title>
-    <DebugType>embedded</DebugType>
-  </PropertyGroup>
-  <Import Project="..\..\WixExt.props" />
-  <ItemGroup Condition=" '$(NCrunch)'=='' ">
-    <ProjectReference Include="..\wixlib\difxapp.wixproj" ReferenceOutputAssembly="false" SkipGetTargetFrameworkProperties="true" Properties="Platform=x86" />
-    <ProjectReference Include="..\wixlib\difxapp.wixproj" ReferenceOutputAssembly="false" SkipGetTargetFrameworkProperties="true" Properties="Platform=x64" />
-  </ItemGroup>
-  <ItemGroup>
-    <Content Include="$(OutDir)..\difxapp_x86.wixlib" PackagePath="wixext4\" />
-    <Content Include="$(OutDir)..\difxapp_x64.wixlib" PackagePath="wixext4\" />
-  </ItemGroup>
-</Project>
diff --git a/src/ext/DifxApp/wixext/WixToolset.DifxApp.wixext.targets b/src/ext/DifxApp/wixext/WixToolset.DifxApp.wixext.targets
deleted file mode 100644
index 87fce8f5..00000000
--- a/src/ext/DifxApp/wixext/WixToolset.DifxApp.wixext.targets
+++ /dev/null
@@ -1,12 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
-<Project>
-  <ItemGroup>
-    <WixExtension Include="$(MSBuildThisFileDirectory)..\$(WixToolsetExtensionPackageFolder)\$(MSBuildThisFileName).dll"
-       Condition=" Exists('$(MSBuildThisFileDirectory)..\$(WixToolsetExtensionPackageFolder)\$(MSBuildThisFileName).dll') " />
-    <UnsupportedWixExtension Include="$(MSBuildThisFileName)"
-      Condition=" !Exists('$(MSBuildThisFileDirectory)..\$(WixToolsetExtensionPackageFolder)\$(MSBuildThisFileName).dll') " />
-    <WixLibrary Include="$(MSBuildThisFileDirectory)..\$(WixToolsetExtensionPackageFolder)\difxapp_$(InstallerPlatform).wixlib" />
-  </ItemGroup>
-</Project>
diff --git a/src/ext/DifxApp/wixlib/DifxAppExtension.wxs b/src/ext/DifxApp/wixlib/DifxAppExtension.wxs
deleted file mode 100644
index 430c604b..00000000
--- a/src/ext/DifxApp/wixlib/DifxAppExtension.wxs
+++ /dev/null
@@ -1,20 +0,0 @@
-<!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
-<Wix xmlns="http://wixtoolset.org/schemas/v4/wxs">
-   <Fragment>
-      <InstallExecuteSequence>
-          <Custom Action="MsiProcessDrivers" After="InstallFiles" Condition="VersionNT &gt; 400" />
-          <Custom Action="MsiCleanupOnSuccess" After="InstallFinalize" Condition="VersionNT &gt; 400" />
-      </InstallExecuteSequence>
-      
-      <Binary Id="DIFxApp$(var.Platform)" SourceFile="$(var.Platform)\DIFxApp.dll" />
-      <Binary Id="DIFxAppA$(var.Platform)" SourceFile="$(var.Platform)\DIFxAppA.dll" />
-      <CustomAction Id="MsiProcessDrivers" DllEntry="ProcessDriverPackages" SuppressModularization="yes" Execute="immediate" BinaryRef="DIFxApp$(var.Platform)" />
-      <CustomAction Id="MsiInstallDrivers" DllEntry="InstallDriverPackages" SuppressModularization="yes" Execute="deferred" Impersonate="no" BinaryRef="DIFxAppA$(var.Platform)" />
-      <CustomAction Id="MsiUninstallDrivers" DllEntry="UninstallDriverPackages" SuppressModularization="yes" Execute="deferred" Impersonate="no" BinaryRef="DIFxAppA$(var.Platform)" />
-      <CustomAction Id="MsiRollbackInstall" DllEntry="RollbackInstall" SuppressModularization="yes" Execute="rollback" Impersonate="no" BinaryRef="DIFxAppA$(var.Platform)" />
-      <CustomAction Id="MsiCleanupOnSuccess" DllEntry="CleanupOnSuccess" SuppressModularization="yes" Execute="immediate" BinaryRef="DIFxApp$(var.Platform)" />
-   </Fragment>
-</Wix>
diff --git a/src/ext/DifxApp/wixlib/difxapp.wixproj b/src/ext/DifxApp/wixlib/difxapp.wixproj
deleted file mode 100644
index b32ceac5..00000000
--- a/src/ext/DifxApp/wixlib/difxapp.wixproj
+++ /dev/null
@@ -1,13 +0,0 @@
-<!-- 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. -->
-<Project Sdk="WixToolset.Sdk">
-  <PropertyGroup>
-    <OutputName>difxapp_$(Platform)</OutputName>
-    <OutputType>Library</OutputType>
-    <BindFiles>true</BindFiles>
-    <Cultures>en-us</Cultures>
-  </PropertyGroup>
-  <ItemGroup>
-    <PackageReference Include="Microsoft.SourceLink.GitHub" PrivateAssets="All" />
-  </ItemGroup>
-</Project>
diff --git a/src/ext/DifxApp/wixlib/x64/DIFxApp.dll b/src/ext/DifxApp/wixlib/x64/DIFxApp.dll
deleted file mode 100644
index 69a44cc8..00000000
--- a/src/ext/DifxApp/wixlib/x64/DIFxApp.dll
+++ /dev/null
Binary files differ
diff --git a/src/ext/DifxApp/wixlib/x64/DIFxAppA.dll b/src/ext/DifxApp/wixlib/x64/DIFxAppA.dll
deleted file mode 100644
index 99458040..00000000
--- a/src/ext/DifxApp/wixlib/x64/DIFxAppA.dll
+++ /dev/null
Binary files differ
diff --git a/src/ext/DifxApp/wixlib/x86/DIFxApp.dll b/src/ext/DifxApp/wixlib/x86/DIFxApp.dll
deleted file mode 100644
index 678a9d95..00000000
--- a/src/ext/DifxApp/wixlib/x86/DIFxApp.dll
+++ /dev/null
Binary files differ
diff --git a/src/ext/DifxApp/wixlib/x86/DIFxAppA.dll b/src/ext/DifxApp/wixlib/x86/DIFxAppA.dll
deleted file mode 100644
index 3ac0838d..00000000
--- a/src/ext/DifxApp/wixlib/x86/DIFxAppA.dll
+++ /dev/null
Binary files differ
diff --git a/src/ext/ext.cmd b/src/ext/ext.cmd
index 0429f542..8575b81e 100644
--- a/src/ext/ext.cmd
+++ b/src/ext/ext.cmd
@@ -28,9 +28,6 @@ call ComPlus\complus.cmd %_C% || exit /b
 :: Dependency
 call Dependency\dependency.cmd %_C% || exit /b
-:: DifxApp
-call DifxApp\difxapp.cmd %_C% || exit /b
 :: DirectX
 call DirectX\directx.cmd %_C% || exit /b