Enable restore for ref and src projects in libs (#33553)

- Use RestoreUseStaticGraphEvaluation which improves no-op restore by 10-15x down to 10-20 seconds.
- .builds msbuild files renamed to .proj as RestoreUseStaticGraphEvaluation throws for non .proj files without an env var set.
- Introducing subsets for libraries and mono and replacing -buildtests switch which was only working for libraries in favor of the subset switch -subset tests which works consistently.
- Fixing the Microsoft.DotNet.CodeAnalysis analyzer which wasn't running and adding missing exclusions.
- Separating restore and build phases in different parts in the repo (ie for installer.tasks) as generated props and targets need to be imported which requires a reevaluation in the build phase.
- Fix eng/docker/build-docker-sdk.ps1 by using the official build entrypoints (cc @alnikola)
- Remove a few depprojs in favor of project restore (faster restore :))
- Fix root code coverage measurement not working correctly
- Traversal support instead of dir.traversal.targets or manual build target defines.
- Introduce a root Build.proj entrypoint which is responsible for building and restoring the repository. This is necessary to enable the new NuGet fast restore which works best and fastest with a single entrypoint.
- Avoid binclashes in libraries and between libraries and installer (netstandard.depproj vs netstandard.csproj)
- Upgrading the SDK to 5.0 latest
- Code cleanup

1 files changed, 80 insertions, 0 deletions

diff --git a/Build.proj b/Build.proj
new file mode 100644
index 00000000000..0ecff09e855
--- /dev/null
+++ b/Build.proj
@@ -0,0 +1,80 @@
+<Project Sdk="Microsoft.Build.Traversal">
+
+  <!--
+    Subsets are already imported by Directory.Build.props.
+    Reference the projects for traversal build. Ordering matters here.
+  -->
+  <ItemGroup>
+    <ProjectReference Include="@(CoreClrProject)" />
+    <ProjectReference Include="@(MonoProject)" />
+    <ProjectReference Include="@(LibrariesProject)" />
+    <ProjectReference Include="@(InstallerProject)" />
+  </ItemGroup>
+
+  <!--
+    Exclude installer depproj and pkgproj from static graph restore. We restore them below.
+    Remove when https://github.com/NuGet/Home/issues/9398 is fixed.
+  -->
+  <ItemGroup Condition="'$(MSBuildRestoreSessionId)' != ''">
+    <ProjectReference Remove="@(DepprojProjectToBuild)"  />
+    <ProjectReference Remove="@(PkgprojProjectToBuild)" />
+    <ProjectReference Remove="@(BundleProjectToBuild)" />
+  </ItemGroup>
+
+  <!-- Custom arcade target which isn't available in Microsoft.Build.Traversal. -->
+  <Target Name="Rebuild" DependsOnTargets="Clean;Build" />
+
+  <Import Project="$(RepositoryEngineeringDir)SubsetValidation.targets" />
+
+  <!-- Upfront restore hooks -->
+  <Import Project="$(RepositoryEngineeringDir)restore\docs.targets" Condition="'$(DotNetBuildFromSource)' != 'true'" />
+  <Import Project="$(RepositoryEngineeringDir)restore\optimizationData.targets" Condition="'$(DotNetBuildFromSource)' != 'true' and '$(EnableNgenOptimization)' == 'true'" />
+  <Import Project="$(RepositoryEngineeringDir)restore\runtimeprops.targets" />
+
+  <!--
+    Use synthetic inputs/outputs to avoid building it all the time. This should let devs build with
+    MSBuild node reuse enabled (the Arcade default). If it were built every time, it would hit file
+    locking issues vs. the persistent nodes that loaded the task DLL for the previous build. It
+    isn't particularly accurate, but better than nothing.
+  -->
+  <Target Name="BuildRepoTasks"
+          DependsOnTargets="GetRepoTasksSrc"
+          BeforeTargets="Restore"
+          Inputs="@(RepoTasksSrc)"
+          Outputs="$(RepoTasksOutputFile)">
+    <ItemGroup>
+      <RepoTaskProjects Include="$(RepoTasksDir)**\*.csproj" />
+    </ItemGroup>
+
+    <MSBuild Projects="@(RepoTaskProjects)"
+             Properties="MSBuildRestoreSessionId=$([System.Guid]::NewGuid());Configuration=Debug;Platform=AnyCPU"
+             Targets="Restore"/>
+
+    <MSBuild Projects="@(RepoTaskProjects)"
+             Properties="Configuration=Debug;Platform=AnyCPU"
+             Targets="Build"/>
+
+    <WriteLinesToFile File="$(RepoTasksOutputFile)"
+                      Lines="$(RepoTasksOutputFile)"
+                      Overwrite="true" />
+  </Target>
+
+  <Target Name="GetRepoTasksSrc">
+    <PropertyGroup>
+      <RepoTasksDir>$(RepoTasksDir)</RepoTasksDir>
+      <RepoTasksOutputFile>$(ArtifactsObjDir)runtime.tasks\Debug\build-semaphore.txt</RepoTasksOutputFile>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <RepoTasksSrc Include="$(RepoTasksDir)**\*.cs*" />
+    </ItemGroup>
+  </Target>
+
+  <Target Name="RestoreWithoutStaticGraph"
+          BeforeTargets="Restore">
+    <MSBuild Projects="@(LibrariesRestoreProject);@(DepprojProjectToBuild);@(PkgprojProjectToBuild);@(BundleProjectToBuild)"
+             Properties="MSBuildRestoreSessionId=$([System.Guid]::NewGuid());RestoreUseStaticGraphEvaluation=false"
+             Targets="Restore" />
+  </Target>
+
+</Project>
\ No newline at end of file