Add support for net9.0

Directory.Build.props

@@ -11,5 +11,10 @@
     <UseArtifactsOutput>false</UseArtifactsOutput>
     <IsTestProject Condition="$(MSBuildProjectName.EndsWith('UnitTests'))">true</IsTestProject>
     <IsPackable Condition="'$(IsTestProject)' != 'true'">true</IsPackable>
+    <CentralPackageTransitivePinningEnabled>true</CentralPackageTransitivePinningEnabled>
+    <UseArtifactsOutput>false</UseArtifactsOutput>
+
+    <!-- Suppress spam about using a preview version of .NET -->
+    <SuppressNETCoreSdkPreviewMessage>true</SuppressNETCoreSdkPreviewMessage>
   </PropertyGroup>
 </Project>

Directory.Packages.props

@@ -1,10 +1,11 @@
 <Project>
   <PropertyGroup>
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
-    <MicrosoftBuildPackageVersion Condition="'$(TargetFramework)' == 'netstandard2.0'">16.9.0</MicrosoftBuildPackageVersion>
-    <MicrosoftBuildPackageVersion Condition="'$(TargetFramework)' == 'net46'">15.9.20</MicrosoftBuildPackageVersion>
-    <MicrosoftBuildPackageVersion Condition="'$(TargetFramework)' == 'net8.0'">17.7.2</MicrosoftBuildPackageVersion>
-    <MicrosoftBuildPackageVersion>17.8.3</MicrosoftBuildPackageVersion>
+
+    <!-- Please use caution adding a dependency to MSBuild packages. Use latest for testing and
+         use the minimum version for compilation for back compat. -->
+    <MicrosoftBuildPackageVersion>17.11.4</MicrosoftBuildPackageVersion>
+    <MicrosoftBuildMinimumPackageVersion>16.11.0</MicrosoftBuildMinimumPackageVersion>
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="CopyOnWrite" Version="0.3.11" Condition=" '$(TargetFramework)' != 'net46' " />
@@ -13,21 +14,25 @@
     <PackageVersion Include="Microsoft.Win32.Registry" Version="5.0.0" />
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageVersion Include="System.CodeDom" Version="8.0.0" />
-    <PackageVersion Include="System.Collections.Immutable" Version="7.0.0" />
+    <PackageVersion Include="System.Collections.Immutable" Version="8.0.0" />
     <PackageVersion Include="System.Text.Json" Version="8.0.4" />
-    <PackageVersion Include="System.Threading.Tasks.Dataflow" Version="7.0.0" Condition=" '$(TargetFramework)' != 'net46' " />
-    <PackageVersion Include="System.Threading.Tasks.Dataflow" Version="4.11.1" Condition=" '$(TargetFramework)' == 'net46' " />
+    <PackageVersion Include="System.Threading.Tasks.Dataflow" Version="8.0.1" /> 
+
+    <!-- Pinning vulnerable packages -->
+    <PackageVersion Include="System.Security.Cryptography.Xml" Version="8.0.1" />
+    <PackageVersion Include="Microsoft.IO.Redist" Version="6.0.1" />
+    <PackageVersion Include="System.Formats.Asn1" Version="8.0.1" />
   </ItemGroup>
   <ItemGroup Condition="'$(IsTestProject)' == 'true'">
     <PackageVersion Include="AssemblyShader" Version="1.0.3-preview" />
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
-    <PackageVersion Include="MSBuild.ProjectCreation" Version="10.0.0" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
+    <PackageVersion Include="MSBuild.ProjectCreation" Version="13.0.0" />
     <PackageVersion Include="Shouldly" Version="4.2.1" />
-    <PackageVersion Include="xunit" Version="2.7.0" />
-    <PackageVersion Include="xunit.runner.visualstudio" Version="2.5.6" />
+    <PackageVersion Include="xunit" Version="2.9.1" />
+    <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.2" />
   </ItemGroup>
   <ItemGroup>
-    <GlobalPackageReference Include="Microsoft.Build.Artifacts" Version="6.1.10" Condition="'$(EnableArtifacts)' != 'false'" />
+    <GlobalPackageReference Include="Microsoft.Build.Artifacts" Version="6.1.30" Condition="'$(EnableArtifacts)' != 'false'" />
     <GlobalPackageReference Include="Microsoft.VisualStudioEng.MicroBuild.Core" Version="1.0.0" Condition="'$(EnableMicroBuild)' != 'false'" />
     <GlobalPackageReference Include="Nerdbank.GitVersioning" Version="3.6.133" Condition="'$(EnableGitVersioning)' != 'false'" />
   </ItemGroup>

azure-pipelines.yml

@@ -6,6 +6,7 @@ variables:
   BuildConfiguration: 'Debug'
   BuildPlatform: 'Any CPU'
   DotNet8Version: '8.x'
+  DotNet9Version: '9.x'
   MSBuildArgs: '"/p:Platform=$(BuildPlatform)" "/p:Configuration=$(BuildConfiguration)" "/BinaryLogger:$(Build.SourcesDirectory)\$(ArtifactsDirectoryName)\msbuild.binlog"'
   SignType: 'Test'
 
@@ -39,6 +40,12 @@ jobs:
     inputs:
       version: '$(DotNet8Version)'
 
+  - task: UseDotNet@2
+    displayName: 'Install .NET $(DotNet9Version)'
+    inputs:
+      version: '$(DotNet9Version)'
+      includePreviewVersions: true
+
   - task: DotNetCoreCLI@2
     displayName: 'Build Solution'
     inputs:
@@ -61,6 +68,14 @@ jobs:
       testRunTitle: 'Windows .NET 8.0'
     condition: succeededOrFailed()
 
+  - task: DotNetCoreCLI@2
+    displayName: 'Run Unit Tests (.NET 9.0)'
+    inputs:
+      command: 'test'
+      arguments: '--no-restore --no-build --framework net9.0 /noautorsp'
+      testRunTitle: 'Windows .NET 9.0'
+    condition: succeededOrFailed()
+
   - task: PublishBuildArtifacts@1
     displayName: 'Publish Artifacts'
     inputs:
@@ -79,6 +94,12 @@ jobs:
     inputs:
       version: '$(DotNet8Version)'
 
+  - task: UseDotNet@2
+    displayName: 'Install .NET $(DotNet9Version)'
+    inputs:
+      version: '$(DotNet9Version)'
+      includePreviewVersions: true
+
   - task: DotNetCoreCLI@2
     displayName: 'dotnet build'
     inputs:
@@ -93,6 +114,14 @@ jobs:
       testRunTitle: 'Linux .NET 8.0'
     condition: succeededOrFailed()
 
+  - task: DotNetCoreCLI@2
+    displayName: 'Run Unit Tests (.NET 9.0)'
+    inputs:
+      command: 'test'
+      arguments: '--no-restore --no-build --framework net9.0 /noautorsp'
+      testRunTitle: 'Linux .NET 9.0'
+    condition: succeededOrFailed()
+
   - task: PublishBuildArtifacts@1
     displayName: 'Publish Artifacts'
     inputs:
@@ -111,6 +140,12 @@ jobs:
     inputs:
       version: '$(DotNet8Version)'
 
+  - task: UseDotNet@2
+    displayName: 'Install .NET $(DotNet9Version)'
+    inputs:
+      version: '$(DotNet9Version)'
+      includePreviewVersions: true
+
   - task: DotNetCoreCLI@2
     displayName: 'dotnet build'
     inputs:
@@ -125,6 +160,14 @@ jobs:
       testRunTitle: 'MacOS .NET 8.0'
     condition: succeededOrFailed()
 
+  - task: DotNetCoreCLI@2
+    displayName: 'Run Unit Tests (.NET 9.0)'
+    inputs:
+      command: 'test'
+      arguments: '--no-restore --no-build --framework net9.0 /noautorsp'
+      testRunTitle: 'MacOS .NET 9.0'
+    condition: succeededOrFailed()
+
   - task: PublishBuildArtifacts@1
     displayName: 'Publish Artifacts'
     inputs:

global.json

@@ -1,7 +1,8 @@
 {
   "sdk": {
-    "version": "8.0.400",
-    "rollForward": "latestMinor"
+    "version": "9.0.100-rc.1.24452.12",
+    "rollForward": "latestMinor",
+    "allowPrerelease": true
   },
   "msbuild-sdks": {
     "Microsoft.Build.NoTargets": "3.7.56"

samples/NoTargets/SampleNoTargets/SampleNoTargets.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.Build.NoTargets/3.7.0">
+<Project Sdk="Microsoft.Build.NoTargets/3.7.56">
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
   </PropertyGroup>

src/Artifacts.UnitTests/Microsoft.Build.Artifacts.UnitTests.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net472;net8.0</TargetFrameworks>
+    <TargetFrameworks>net472;net8.0;net9.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="AssemblyShader" />

src/Artifacts/Microsoft.Build.Artifacts.csproj

@@ -15,14 +15,11 @@
     <Compile Include="..\Shared\CopyExceptionHandling.cs" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="CopyOnWrite"
-                      GeneratePathProperty="True"
-                      PrivateAssets="All" />
-    <PackageReference Include="Microsoft.Build.Tasks.Core"
-                      ExcludeAssets="Runtime"
-                      PrivateAssets="All" />
-    <PackageReference Include="System.Threading.Tasks.Dataflow"
-                      PrivateAssets="All" />
+    <PackageReference Include="CopyOnWrite" GeneratePathProperty="True" PrivateAssets="All" />
+
+    <!-- Note these are API dependencies to support a minimum version of MSBuild. -->
+    <PackageReference Include="Microsoft.Build.Tasks.Core" VersionOverride="$(MicrosoftBuildMinimumPackageVersion)" ExcludeAssets="Runtime" PrivateAssets="All" />
+    <PackageReference Include="System.Threading.Tasks.Dataflow" VersionOverride="4.9.0" PrivateAssets="All" />
   </ItemGroup>
   <ItemGroup>
     <None Include="build\*"

src/CentralPackageVersions.UnitTests/Microsoft.Build.CentralPackageVersions.UnitTests.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net472;net8.0</TargetFrameworks>
+    <TargetFrameworks>net472;net8.0;net9.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" />

src/CentralPackageVersions/Microsoft.Build.CentralPackageVersions.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.Build.NoTargets">
   <PropertyGroup>
-    <TargetFrameworks>net40;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0</TargetFrameworks>
     <Description>Provides the ability to centrally manage your NuGet package versions when using PackageReference.</Description>
     <PackageTags>MSBuild MSBuildSdk</PackageTags>
     <ArtifactsPath>$(BaseArtifactsPath)\$(MSBuildProjectName)\</ArtifactsPath>

src/CopyOnWrite.UnitTests/Microsoft.Build.CopyOnWrite.UnitTests.csproj

@@ -1,11 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net472;net8.0</TargetFrameworks>
+    <TargetFrameworks>net472;net8.0;net9.0</TargetFrameworks>
     <Nullable>Enable</Nullable>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="CopyOnWrite" />
-    <PackageReference Include="Microsoft.Build" Condition="'$(TargetFramework)' != 'net8.0' " />
+    <PackageReference Include="Microsoft.Build" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" />
     <PackageReference Include="Microsoft.Win32.Registry" />
     <PackageReference Include="MSBuild.ProjectCreation" />

src/CopyOnWrite/Microsoft.Build.CopyOnWrite.csproj

@@ -31,7 +31,9 @@
     <PackageReference Include="CopyOnWrite"
                       GeneratePathProperty="True"
                       PrivateAssets="All" />
+    <!-- Note this is an API dependencies to support a minimum version of MSBuild. -->
     <PackageReference Include="Microsoft.Build.Tasks.Core"
+                      VersionOverride="$(MicrosoftBuildMinimumPackageVersion)"
                       PrivateAssets="all"
                       ExcludeAssets="Runtime"
                       IncludeAssets="compile; build; native; contentfiles; analyzers; buildtransitive" />

src/NoTargets.UnitTests/Microsoft.Build.NoTargets.UnitTests.csproj

@@ -1,11 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net472;net8.0</TargetFrameworks>
+    <TargetFrameworks>net472;net8.0;net9.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="AssemblyShader" />
     <PackageReference Include="Microsoft.NET.Test.Sdk"
-                      ShadeDependencies="NuGet.Frameworks"  />
+                      ShadeDependencies="NuGet.Frameworks" />
     <PackageReference Include="MSBuild.ProjectCreation" />
     <PackageReference Include="Newtonsoft.Json" />
     <PackageReference Include="Shouldly" />

src/NoTargets.UnitTests/NoTargetsTests.cs

@@ -91,6 +91,8 @@ public void DoNotReferenceOutputAssemblies()
                     path: Path.Combine(TestRootPath, "ProjectA", "ProjectA.csproj"),
 #if NETFRAMEWORK || NET8_0
                     targetFramework: "net8.0")
+#elif NET9_0
+                    targetFramework: "net9.0")
 #endif
                 .Save();
 
@@ -264,35 +266,76 @@ public void SimpleBuild(string projectExtension)
             buildOutput.Messages.High.ShouldContain("86F00AF59170450E9D687652D74A6394");
         }
 
-        [Theory]
-#if !NETFRAMEWORK
-        [InlineData(".csproj")]
-#endif
-        [InlineData(".proj", Skip = "Currently broken because of a regression in Static Graph when the extension is .proj")]
-        public void StaticGraphBuildsSucceed(string projectExtension)
+        [Fact]
+        public void StaticGraphBuildsSucceed()
         {
             ProjectCreator sdkReference = ProjectCreator.Templates.SdkCsproj(
                 Path.Combine(TestRootPath, "sdkstyle", "sdkstyle.csproj"))
                 .Save();
+
+            ProjectCreator noTargets = ProjectCreator.Templates.NoTargetsProject(
+                path: Path.Combine(TestRootPath, "notargets", "notargets.csproj"),
+                customAction: creator =>
+                {
+                    creator.ItemProjectReference(sdkReference, referenceOutputAssembly: false);
+                }).Save();
+
+            ProjectCreator project = ProjectCreator.Templates.SdkCsproj(
+                    Path.Combine(TestRootPath, "main", $"main.csproj"),
+                    projectCreator: creator =>
+                    {
+                        creator.ItemProjectReference(noTargets, referenceOutputAssembly: false);
+                    })
+                .Save()
+                .TryBuild("Restore", out bool result, out BuildOutput restoreOutput);
+
+            result.ShouldBeTrue(restoreOutput.GetConsoleLog());
+
+            using (BuildManager buildManager = new BuildManager())
+            using (ProjectCollection projectCollection = new ProjectCollection())
+            {
+                try
+                {
+                    BuildOutput buildOutput = BuildOutput.Create();
+
+                    buildManager.BeginBuild(
+                        new BuildParameters(projectCollection)
+                        {
+                            Loggers = new[] { buildOutput },
+                            IsolateProjects = true,
+                        });
+                    GraphBuildResult graphResult = buildManager.BuildRequest(
+                        new GraphBuildRequestData(
+                            [new ProjectGraphEntryPoint(project.FullPath, new Dictionary<string, string>())],
+                            new List<string> { "Build" }));
+                    var console = buildOutput.GetConsoleLog();
+                    graphResult.OverallResult.ShouldBe(BuildResultCode.Success, graphResult.Exception?.ToString());
+                }
+                finally
+                {
+                    buildManager.EndBuild();
+                }
+            }
+        }
+
 #if NETFRAMEWORK
+        [Fact]
+        public void StaticGraphBuildsSucceedLegacyCsproj()
+        {
             ProjectCreator legacyReference = ProjectCreator.Templates.LegacyCsproj(
                     Path.Combine(TestRootPath, "legacy", "legacy.csproj"),
                     targetFrameworkVersion: "v4.7.2")
                 .Save();
-#endif
 
             ProjectCreator noTargets = ProjectCreator.Templates.NoTargetsProject(
                 path: Path.Combine(TestRootPath, "notargets", "notargets.csproj"),
                 customAction: creator =>
                 {
-                    creator.ItemProjectReference(sdkReference, referenceOutputAssembly: false);
-#if NETFRAMEWORK
                     creator.ItemProjectReference(legacyReference, referenceOutputAssembly: false);
-#endif
                 }).Save();
 
             ProjectCreator project = ProjectCreator.Templates.SdkCsproj(
-                    Path.Combine(TestRootPath, "main", $"main{projectExtension}"),
+                    Path.Combine(TestRootPath, "main", $"main.csproj"),
                     projectCreator: creator =>
                     {
                         creator.ItemProjectReference(noTargets, referenceOutputAssembly: false);
@@ -318,17 +361,18 @@ public void StaticGraphBuildsSucceed(string projectExtension)
 
                     GraphBuildResult graphResult = buildManager.BuildRequest(
                         new GraphBuildRequestData(
-                            new[] { new ProjectGraphEntryPoint(project.FullPath) },
-                            new[] { "Build" }));
+                            new[] { new ProjectGraphEntryPoint(project.FullPath, new Dictionary<string, string>()) },
+                            new List<string> { "Build" }));
 
-                    graphResult.OverallResult.ShouldBe(BuildResultCode.Success, buildOutput.GetConsoleLog());
+                    graphResult.OverallResult.ShouldBe(BuildResultCode.Success, graphResult.Exception?.ToString());
                 }
                 finally
                 {
                     buildManager.EndBuild();
                 }
             }
         }
+#endif
 
         [Theory]
         [InlineData(".csproj", "Build")]

src/NoTargets/Microsoft.Build.NoTargets.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.Build.NoTargets">
   <PropertyGroup>
-    <TargetFrameworks>net40;netstandard2.0</TargetFrameworks>
+    <TargetFrameworks>netstandard2.0</TargetFrameworks>
     <Description>Provides targets for projects that do not compile an assembly.</Description>
     <PackageTags>MSBuild MSBuildSdk notargets notarget</PackageTags>
     <ArtifactsPath>$(BaseArtifactsPath)$(MSBuildProjectName)\</ArtifactsPath>

src/Traversal.UnitTests/Microsoft.Build.Traversal.UnitTests.csproj

@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <TargetFrameworks>net472;net8.0</TargetFrameworks>
+    <TargetFrameworks>net472;net8.0;net9.0</TargetFrameworks>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="AssemblyShader" />

src/Traversal.UnitTests/TraversalTests.cs

@@ -584,7 +584,7 @@ public void StaticGraphBuildAndRestoreSucceed()
                         targetsToBuild: new[] { "Restore" });
 
                     var graphBuildRequestData = new GraphBuildRequestData(
-                        projectGraphEntryPoints: new[] { new ProjectGraphEntryPoint(traversalProject.FullPath) },
+                        projectGraphEntryPoints: new[] { new ProjectGraphEntryPoint(traversalProject.FullPath, new Dictionary<string, string>()) },
                         targetsToBuild: new[] { "Build" });
 
                     var graphRestoreResult = buildManager.BuildRequest(graphRestoreRequestData);