diff --git a/src/SourceBuild/content/Directory.Build.props b/src/SourceBuild/content/Directory.Build.props
index 21c49e867..a4649f591 100644
--- a/src/SourceBuild/content/Directory.Build.props
+++ b/src/SourceBuild/content/Directory.Build.props
@@ -125,6 +125,9 @@
     <PackageReportDir>$(BaseOutputPath)prebuilt-report/</PackageReportDir>
     <RepoProjectsDir>$(ProjectDir)/repo-projects/</RepoProjectsDir>
     <ResultingPrebuiltPackagesDir>$(PackageReportDir)prebuilt-packages/</ResultingPrebuiltPackagesDir>
+    <PackageListsDir>$(PackageReportDir)packagelists/</PackageListsDir>
+    <!-- The prefix needs to match what's defined in Arcade's source-build infra. Consider using a single property, in the future. -->
+    <NonShippingPackagesListPrefix>NonShipping.Packages.</NonShippingPackagesListPrefix>
     <PackageReportDataFile>$(PackageReportDir)prebuilt-usage.xml</PackageReportDataFile>
     <PoisonUsageReportFile>$(PackageReportDir)poison-usage.xml</PoisonUsageReportFile>
     <PoisonReportDataFile>$(PackageReportDir)poison-catalog.xml</PoisonReportDataFile>
diff --git a/src/SourceBuild/content/build.proj b/src/SourceBuild/content/build.proj
index f4fd4ae62..efcb226fe 100644
--- a/src/SourceBuild/content/build.proj
+++ b/src/SourceBuild/content/build.proj
@@ -70,10 +70,15 @@
 
     <Message Importance="High" Text="[$([System.DateTime]::Now.ToString('HH:mm:ss.ff'))] Checking @(FinalCliTarball) for poisoned files." />
 
+    <ItemGroup>
+      <NonShippingPackagesList Include="$(PackageListsDir)**/$(NonShippingPackagesListPrefix)*" />
+    </ItemGroup>
+
     <CheckForPoison FilesToCheck="@(FinalCliTarball)"
                     HashCatalogFilePath="$(PoisonReportDataFile)"
                     MarkerFileName="$(PoisonMarkerFile)"
-                    PoisonReportOutputFilePath="$(PoisonUsageReportFile)" />
+                    PoisonReportOutputFilePath="$(PoisonUsageReportFile)"
+                    NonShippingPackagesListFiles="@(NonShippingPackagesList)" />
 
     <WriteLinesToFile File="$(CompletedSemaphorePath)ReportPoisonUsage.complete" Overwrite="true" />
     <Message Importance="High" Text="[$([System.DateTime]::Now.ToString('HH:mm:ss.ff'))] Done checking for poison." />
diff --git a/src/SourceBuild/content/eng/arcade-overrides/SourceBuildArcade.targets b/src/SourceBuild/content/eng/arcade-overrides/SourceBuildArcade.targets
new file mode 100644
index 000000000..2d1c499f8
--- /dev/null
+++ b/src/SourceBuild/content/eng/arcade-overrides/SourceBuildArcade.targets
@@ -0,0 +1,100 @@
+<!-- Licensed to the .NET Foundation under one or more agreements. The .NET Foundation licenses this file to you under the MIT license. -->
+<Project>
+
+  <!-- Repo extensibility point. -->
+  <Import Project="$(RepositoryEngineeringDir)SourceBuild.props" Condition="Exists('$(RepositoryEngineeringDir)SourceBuild.props')" />
+
+  <PropertyGroup>
+    <SourceBuildOutputDir Condition="'$(SourceBuildOutputDir)' == ''">$([MSBuild]::NormalizeDirectory('$(ArtifactsDir)', 'source-build'))</SourceBuildOutputDir>
+    <SourceBuildSelfDir>$([MSBuild]::NormalizeDirectory('$(SourceBuildOutputDir)', 'self'))</SourceBuildSelfDir>
+    <CurrentRepoSourceBuildSourceDir>$([MSBuild]::NormalizeDirectory('$(SourceBuildSelfDir)', 'src'))</CurrentRepoSourceBuildSourceDir>
+    <CurrentRepoSourceBuildPackageCache>$([MSBuild]::NormalizeDirectory('$(SourceBuildSelfDir)', 'package-cache'))</CurrentRepoSourceBuildPackageCache>
+    <SourceBuildSelfPrebuiltReportDir>$([MSBuild]::NormalizeDirectory('$(SourceBuildSelfDir)', 'prebuilt-report'))</SourceBuildSelfPrebuiltReportDir>
+
+    <!--
+      Keep artifacts/ inside source dir so that ancestor-based file lookups find the inner repo, not
+      the outer repo. The inner repo global.json and NuGet.config files may have been modified by
+      source-build, and we want projects inside the artifacts/ dir to respect that.
+    -->
+    <CurrentRepoSourceBuildArtifactsDir>$([MSBuild]::NormalizeDirectory('$(CurrentRepoSourceBuildSourceDir)', 'artifacts'))</CurrentRepoSourceBuildArtifactsDir>
+    <CurrentRepoSourceBuildArtifactsPackagesDir>$([MSBuild]::NormalizeDirectory('$(CurrentRepoSourceBuildArtifactsDir)', 'packages', '$(Configuration)'))</CurrentRepoSourceBuildArtifactsPackagesDir>
+
+    <CurrentRepoSourceBuiltNupkgCacheDir>$([MSBuild]::NormalizeDirectory('$(CurrentRepoSourceBuildArtifactsDir)', 'obj', 'source-built-upstream-cache'))</CurrentRepoSourceBuiltNupkgCacheDir>
+
+    <PrebuiltBaselineDataFileDefault>$(RepositoryEngineeringDir)SourceBuildPrebuiltBaseline.xml</PrebuiltBaselineDataFileDefault>
+    <PrebuiltBaselineDataFile Condition="Exists('$(PrebuiltBaselineDataFileDefault)')">$(PrebuiltBaselineDataFileDefault)</PrebuiltBaselineDataFile>
+
+    <!-- By default, use the license file from the root of the repo for the intermediate nupkg. -->
+    <DetectSourceBuildIntermediateNupkgLicense Condition="'$(DetectSourceBuildIntermediateNupkgLicense)' == ''">true</DetectSourceBuildIntermediateNupkgLicense>
+
+    <EnableDefaultSourceBuildIntermediateItems Condition="'$(EnableDefaultSourceBuildIntermediateItems)' == ''">true</EnableDefaultSourceBuildIntermediateItems>
+  </PropertyGroup>
+
+  <Target Name="GetSourceBuildIntermediateNupkgNameConvention">
+    <PropertyGroup Condition="'$(SourceBuildNonPortable)' == 'true' and '$(TargetRid)' == ''">
+      <TargetRid>$([System.Runtime.InteropServices.RuntimeInformation]::RuntimeIdentifier)</TargetRid>
+    </PropertyGroup>
+
+    <PropertyGroup Condition="'$(TargetRid)' == ''">
+      <HostArchitecture>$([System.Runtime.InteropServices.RuntimeInformation]::ProcessArchitecture.ToString().ToLowerInvariant())</HostArchitecture>
+      <SourceBuildTargetArchitecture Condition="'$(SourceBuildTargetArchitecture)' == ''">$(HostArchitecture)</SourceBuildTargetArchitecture>
+
+      <SourceBuildTargetPortableOSPlatform Condition="$([MSBuild]::IsOSPlatform('windows'))">win</SourceBuildTargetPortableOSPlatform>
+      <SourceBuildTargetPortableOSPlatform Condition="$([MSBuild]::IsOSPlatform('osx'))">osx</SourceBuildTargetPortableOSPlatform>
+      <SourceBuildTargetPortableOSPlatform Condition="$([MSBuild]::IsOSPlatform('linux'))">linux</SourceBuildTargetPortableOSPlatform>
+      <SourceBuildTargetPortableOSPlatform Condition="'$(SourceBuildTargetPortableOSPlatform)'==''">linux</SourceBuildTargetPortableOSPlatform>
+
+      <!-- By default, build for the portable OS platform with host machine architecture. -->
+      <TargetRid>$(SourceBuildTargetPortableOSPlatform)-$(SourceBuildTargetArchitecture)</TargetRid>
+    </PropertyGroup>
+
+    <!-- If this repo builds only managed outputs, no RID is used for the intermediate nupkg. -->
+    <PropertyGroup Condition="'$(SourceBuildManagedOnly)' != 'true'">
+      <SourceBuildIntermediateNupkgRid Condition="'$(SourceBuildIntermediateNupkgRid)' == ''">$(TargetRid)</SourceBuildIntermediateNupkgRid>
+    </PropertyGroup>
+
+    <PropertyGroup>
+      <SourceBuildIntermediateNupkgPrefix>Microsoft.SourceBuild.Intermediate.</SourceBuildIntermediateNupkgPrefix>
+      <SourceBuildIntermediateNupkgSuffix Condition="'$(SourceBuildIntermediateNupkgRid)' != ''">.$(SourceBuildIntermediateNupkgRid)</SourceBuildIntermediateNupkgSuffix>
+    </PropertyGroup>
+  </Target>
+
+  <!--
+    Get the list of nupkg contents, categorized into supplemental categories if necessary. By
+    default, all non-symbol-package nupkg files and tar.gz files in
+    'artifacts/packages/{configuration}' are packed in the intermediate nupkg.
+
+    To configure this, add a target to eng/SourceBuild.props with
+    'BeforeTargets="GetCategorizedIntermediateNupkgContents"' that sets up
+    'IntermediateNupkgArtifactFile' items with optional 'Category' metadata.
+
+    When 'Category' is set, this tooling produces one supplemental intermediate nupkg per named
+    category. All files not in a category are put into the "main" intermediate nupkg.
+  -->
+  <Target Name="GetCategorizedIntermediateNupkgContents">
+    <ItemGroup Condition="'$(EnableDefaultSourceBuildIntermediateItems)' == 'true'">
+      <!-- Catch-all: anything not in a category gets packed in the 'main' intermediate nupkg. -->
+      <IntermediateNupkgArtifactFile Include="$(CurrentRepoSourceBuildArtifactsPackagesDir)**\*.nupkg" />
+      <IntermediateNupkgArtifactFile Include="$(CurrentRepoSourceBuildArtifactsPackagesDir)**\*.tar.gz" />
+      <!-- Don't pack any symbol packages: not needed for downstream source-build CI. -->
+      <IntermediateNupkgArtifactFile Remove="$(CurrentRepoSourceBuildArtifactsPackagesDir)**\*.symbols.nupkg" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <IntermediateNupkgFile Include="@(IntermediateNupkgArtifactFile)" PackagePath="artifacts" />
+
+      <!-- Report goes into the 'main' intermediate nupkg. -->
+      <IntermediateNupkgFile Include="$(SourceBuildSelfPrebuiltReportDir)**\*" PackagePath="prebuilt-report" />
+    </ItemGroup>
+
+    <RemoveDuplicates Inputs="@(IntermediateNupkgFile)">
+      <Output TaskParameter="Filtered" ItemName="IntermediatePackageFile" />
+    </RemoveDuplicates>
+
+    <ItemGroup>
+      <IntermediateNonShippingNupkgFile Include="@(IntermediatePackageFile)" Condition="$([System.Text.RegularExpressions.Regex]::Match(%(Identity),'[\\\\/]NonShipping[\\\\/]').Success)"/>
+      <SupplementalIntermediateNupkgCategory Include="%(IntermediatePackageFile.Category)" />
+    </ItemGroup>
+  </Target>
+
+</Project>
diff --git a/src/SourceBuild/content/eng/arcade-overrides/SourceBuildIntermediate.proj b/src/SourceBuild/content/eng/arcade-overrides/SourceBuildIntermediate.proj
new file mode 100644
index 000000000..a017397be
--- /dev/null
+++ b/src/SourceBuild/content/eng/arcade-overrides/SourceBuildIntermediate.proj
@@ -0,0 +1,108 @@
+<!-- Licensed to the .NET Foundation under one or more agreements. The .NET Foundation licenses this file to you under the MIT license. -->
+<Project>
+
+  <!-- Shield this project from nonstandard Directory.Build.props/targets. -->
+  <PropertyGroup>
+    <ImportDirectoryPackagesProps>false</ImportDirectoryPackagesProps>
+    <ImportDirectoryBuildProps>false</ImportDirectoryBuildProps>
+    <ImportDirectoryBuildTargets>false</ImportDirectoryBuildTargets>
+  </PropertyGroup>
+
+  <Import Project="Sdk.props" Sdk="Microsoft.DotNet.Arcade.Sdk" />
+  <Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk" />
+
+  <!-- Import common functionality, including repo extension point. -->
+  <Import Project="$(SourceBuildArcadeTargetsFile)" />
+
+  <PropertyGroup>
+    <Copyright Condition="'$(Copyright)' == ''">$(CopyrightNetFoundation)</Copyright>
+
+    <IsPackable>true</IsPackable>
+    <IsShipping>false</IsShipping>
+    <SuppressDependenciesWhenPacking>true</SuppressDependenciesWhenPacking>
+    <IncludeBuildOutput>false</IncludeBuildOutput>
+
+    <!-- NuGet excludes nupkgs by default: disable this behavior. -->
+    <NoDefaultExcludes>true</NoDefaultExcludes>
+
+    <!-- Arbitrary TargetFramework to appease SDK. -->
+    <TargetFramework>netstandard2.0</TargetFramework>
+  </PropertyGroup>
+
+  <PropertyGroup Condition="'$(SourceBuildIntermediateNupkgLicenseFile)' != ''">
+    <PackageLicenseFile>$([System.IO.Path]::GetFileName('$(SourceBuildIntermediateNupkgLicenseFile)'))</PackageLicenseFile>
+  </PropertyGroup>
+
+  <ItemGroup Condition="'$(SourceBuildIntermediateNupkgLicenseFile)' != ''">
+    <None Include="$(SourceBuildIntermediateNupkgLicenseFile)" Pack="true" PackagePath="$(PackageLicenseFile)" />
+  </ItemGroup>
+
+  <Target Name="InitializeSourceBuildIntermediatePackageId"
+          DependsOnTargets="GetSourceBuildIntermediateNupkgNameConvention"
+          BeforeTargets="GenerateNuspec;InitializeStandardNuspecProperties">
+    <Error Condition="'$(GitHubRepositoryName)' == ''" Text="GitHubRepositoryName property is not defined." />
+
+    <PropertyGroup>
+      <PackageId>$(GitHubRepositoryName)</PackageId>
+      <PackageId Condition="'$(SupplementalIntermediateNupkgCategory)' != ''">$(PackageId).$(SupplementalIntermediateNupkgCategory)</PackageId>
+
+      <PackageId>$(SourceBuildIntermediateNupkgPrefix)$(PackageId)$(SourceBuildIntermediateNupkgSuffix)</PackageId>
+    </PropertyGroup>
+  </Target>
+
+  <Target Name="GetIntermediateNupkgArtifactFiles"
+          DependsOnTargets="
+            GetCategorizedIntermediateNupkgContents;
+            GetSupplementalIntermediateNupkgManifest;
+            CreateNonShippingNupkgList"
+          BeforeTargets="_GetPackageFiles">
+    <ItemGroup>
+      <Content Include="@(IntermediatePackageFile->WithMetadataValue('Category', '$(SupplementalIntermediateNupkgCategory)'))" />
+    </ItemGroup>
+  </Target>
+
+  <Target Name="GetSupplementalIntermediateNupkgManifest"
+          Condition="'$(SupplementalIntermediateNupkgCategory)' == ''"
+          DependsOnTargets="InitializeSourceBuildIntermediatePackageId">
+    <PropertyGroup>
+      <SupplementalIntermediateNupkgManifestFile>$(BaseOutputPath)SupplementalIntermediatePackages.txt</SupplementalIntermediateNupkgManifestFile>
+    </PropertyGroup>
+
+    <WriteLinesToFile
+      File="$(SupplementalIntermediateNupkgManifestFile)"
+      Lines="@(SupplementalIntermediateNupkgCategory->'$(SourceBuildIntermediateNupkgPrefix)$(GitHubRepositoryName).%(Identity)$(SourceBuildIntermediateNupkgSuffix)', '%0A')"
+      Overwrite="true" />
+
+    <ItemGroup>
+      <!-- The list of supplemental package ids goes into the "main" intermediate nupkg. -->
+      <Content Include="$(SupplementalIntermediateNupkgManifestFile)" PackagePath="." />
+    </ItemGroup>
+  </Target>
+
+  <!-- Create a list of non-shipping packages and include it in the intermediate package. -->
+  <Target Name="CreateNonShippingNupkgList"
+          Condition="'@(IntermediateNonShippingNupkgFile)' != ''">
+    <PropertyGroup>
+      <!-- The prefix needs to match what's defined in tarball source-build infra. Consider using a single property, in the future. -->
+      <NonShippingPackagesListPrefix>NonShipping.Packages.</NonShippingPackagesListPrefix>
+      <NonShippingPackagesList>$(CurrentRepoSourceBuildArtifactsPackagesDir)$(NonShippingPackagesListPrefix)$(GitHubRepositoryName).lst</NonShippingPackagesList>
+    </PropertyGroup>
+
+    <WriteLinesToFile
+      File="$(NonShippingPackagesList)"
+      Lines="@(IntermediateNonShippingNupkgFile->'%(Filename)%(Extension)')"
+      Overwrite="true" />
+
+    <ItemGroup>
+      <!-- The list of non-shipping packages goes into the "main" intermediate nupkg. -->
+      <Content Include="$(NonShippingPackagesList)" PackagePath="." />
+    </ItemGroup>
+  </Target>
+
+
+  <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />
+  <Import Project="Sdk.targets" Sdk="Microsoft.DotNet.Arcade.Sdk" />
+
+  <Target Name="Build" />
+
+</Project>
diff --git a/src/SourceBuild/content/eng/tools/tasks/Microsoft.DotNet.SourceBuild.Tasks.LeakDetection/CheckForPoison.cs b/src/SourceBuild/content/eng/tools/tasks/Microsoft.DotNet.SourceBuild.Tasks.LeakDetection/CheckForPoison.cs
index 1ac545724..27ff93efb 100644
--- a/src/SourceBuild/content/eng/tools/tasks/Microsoft.DotNet.SourceBuild.Tasks.LeakDetection/CheckForPoison.cs
+++ b/src/SourceBuild/content/eng/tools/tasks/Microsoft.DotNet.SourceBuild.Tasks.LeakDetection/CheckForPoison.cs
@@ -57,6 +57,11 @@ namespace Microsoft.DotNet.SourceBuild.Tasks.LeakDetection
         /// </summary>
         public string OverrideTempPath { get; set; }
 
+        /// <summary>
+        /// Array of files containing lists of non-shipping packages
+        /// </summary>
+        public ITaskItem[] NonShippingPackagesListFiles { get; set; }
+
         private static readonly string[] ZipFileExtensions =
         {
             ".zip",
@@ -173,6 +178,7 @@ namespace Microsoft.DotNet.SourceBuild.Tasks.LeakDetection
         /// <returns>List of poisoned packages and files found and reasons for each</returns>
         internal IEnumerable<PoisonedFileEntry> GetPoisonedFiles(IEnumerable<string> initialCandidates, string catalogedPackagesFilePath, string markerFileName)
         {
+            IEnumerable<string> nonShippingPackages = GetAllNonShippingPackages();
             IEnumerable<CatalogPackageEntry> catalogedPackages = ReadCatalog(catalogedPackagesFilePath);
             var poisons = new List<PoisonedFileEntry>();
             var candidateQueue = new Queue<string>(initialCandidates);
@@ -191,6 +197,14 @@ namespace Microsoft.DotNet.SourceBuild.Tasks.LeakDetection
                 // add its contents to the list to be checked.
                 if (ZipFileExtensions.Concat(TarFileExtensions).Concat(TarGzFileExtensions).Any(e => checking.ToLowerInvariant().EndsWith(e)))
                 {
+                    Log.LogMessage($"Zip or NuPkg file to check: {checking}");
+
+                    // Skip non-shipping packages
+                    if (nonShippingPackages.Contains(Path.GetFileName(checking), StringComparer.OrdinalIgnoreCase))
+                    {
+                        continue;
+                    }
+
                     var tempCheckingDir = Path.Combine(tempDir.FullName, Path.GetFileNameWithoutExtension(checking));
                     PoisonedFileEntry result = ExtractAndCheckZipFileOnly(catalogedPackages, checking, markerFileName, tempCheckingDir, candidateQueue);
                     if (result != null)
@@ -213,6 +227,21 @@ namespace Microsoft.DotNet.SourceBuild.Tasks.LeakDetection
             return poisons;
         }
 
+        private IEnumerable<string> GetAllNonShippingPackages()
+        {
+            if (NonShippingPackagesListFiles != null)
+            {
+                return NonShippingPackagesListFiles
+                    .SelectMany(item => File.ReadAllLines(item.ItemSpec))
+                    .Distinct()
+                    .ToList();
+            }
+            else
+            {
+                return Enumerable.Empty<string>();
+            }
+        }
+
         private static PoisonedFileEntry CheckSingleFile(IEnumerable<CatalogPackageEntry> catalogedPackages, string rootPath, string fileToCheck)
         {
             // skip some common files that get copied verbatim from nupkgs - LICENSE, _._, etc as well as
diff --git a/src/SourceBuild/content/repo-projects/Directory.Build.targets b/src/SourceBuild/content/repo-projects/Directory.Build.targets
index 3b9a171c2..3a68fd5f1 100644
--- a/src/SourceBuild/content/repo-projects/Directory.Build.targets
+++ b/src/SourceBuild/content/repo-projects/Directory.Build.targets
@@ -355,6 +355,13 @@
       <SourceBuiltNupkgFiles Include="$(SourceBuiltPackagesPath)extractArtifacts/**/artifacts/*.nupkg" />
     </ItemGroup>
 
+    <ItemGroup Condition="'@(_BuiltIntermediatePackages)' != ''">
+      <NonShippingPackageLists Include="$(SourceBuiltPackagesPath)extractArtifacts/**/$(NonShippingPackagesListPrefix)*" />
+    </ItemGroup>
+
+    <!-- Copy lists of NonShipping packages to prebuilt-report dir -->
+    <Copy SourceFiles="@(NonShippingPackageLists)" DestinationFolder="$(PackageReportDir)packagelists/" />
+
     <Move
       Condition="'@(SourceBuiltNupkgFiles)' != ''"
       SourceFiles="@(SourceBuiltNupkgFiles)"
diff --git a/src/SourceBuild/content/repo-projects/known-good.proj b/src/SourceBuild/content/repo-projects/known-good.proj
index 2d2226637..bfac7141f 100644
--- a/src/SourceBuild/content/repo-projects/known-good.proj
+++ b/src/SourceBuild/content/repo-projects/known-good.proj
@@ -36,6 +36,7 @@
         <RepositoryReference Include="diagnostics" />
         <RepositoryReference Include="razor" />
         <RepositoryReference Include="xliff-tasks" />
+        <RepositoryReference Include="runtime" />
         <RepositoryReference Include="roslyn" />
         <RepositoryReference Include="source-build-externals" />
         <RepositoryReference Include="symreader" />
@@ -43,7 +44,6 @@
 
         <!-- Tier 2 -->
         <RepositoryReference Include="linker" />
-        <RepositoryReference Include="runtime" />
         <RepositoryReference Include="msbuild" />
 
         <!-- Tier 3 -->
diff --git a/src/SourceBuild/content/repo-projects/linker.proj b/src/SourceBuild/content/repo-projects/linker.proj
index db14ef098..a5c79e1c1 100644
--- a/src/SourceBuild/content/repo-projects/linker.proj
+++ b/src/SourceBuild/content/repo-projects/linker.proj
@@ -18,6 +18,10 @@
     <NuGetConfigFiles Include="$(ProjectDirectory)/external/cecil/NuGet.config" />
   </ItemGroup>
 
+  <ItemGroup>
+    <RepositoryReference Include="runtime" />
+  </ItemGroup>
+
   <ItemGroup>
     <UseSourceBuiltSdkOverride Include="@(ArcadeSdkOverride)" />
   </ItemGroup>
diff --git a/src/SourceBuild/content/repo-projects/roslyn.proj b/src/SourceBuild/content/repo-projects/roslyn.proj
index bdc856b21..f4e3b8095 100644
--- a/src/SourceBuild/content/repo-projects/roslyn.proj
+++ b/src/SourceBuild/content/repo-projects/roslyn.proj
@@ -26,6 +26,7 @@
     <RepositoryReference Include="command-line-api" />
     <RepositoryReference Include="source-build-externals" />
     <RepositoryReference Include="xliff-tasks" />
+    <RepositoryReference Include="runtime" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/SourceBuild/content/repo-projects/runtime.proj b/src/SourceBuild/content/repo-projects/runtime.proj
index c477000a6..ddf743231 100644
--- a/src/SourceBuild/content/repo-projects/runtime.proj
+++ b/src/SourceBuild/content/repo-projects/runtime.proj
@@ -23,6 +23,7 @@
     <BuildCommandArgs>$(BuildCommandArgs) /p:RuntimeOS=$(RuntimeOS)</BuildCommandArgs>
     <BuildCommandArgs>$(BuildCommandArgs) /p:BaseOS=$(BaseOS)</BuildCommandArgs>
     <BuildCommandArgs>$(BuildCommandArgs) /p:SourceBuildNonPortable=true</BuildCommandArgs>
+    <BuildCommandArgs>$(BuildCommandArgs) /p:UsingToolMicrosoftNetCompilers=false</BuildCommandArgs>
     <BuildCommand>$(StandardSourceBuildCommand) $(BuildCommandArgs)</BuildCommand>
   </PropertyGroup>
 
@@ -58,9 +59,7 @@
   <ItemGroup>
       <RepositoryReference Include="arcade" />
       <RepositoryReference Include="symreader" />
-      <RepositoryReference Include="linker" />
       <RepositoryReference Include="source-build-externals" />
-      <RepositoryReference Include="roslyn" />
   </ItemGroup>
 
   <UsingTask AssemblyFile="$(XPlatSourceBuildTasksAssembly)" TaskName="AddRidToRuntimeJson" />
diff --git a/src/SourceBuild/patches/runtime/0001-Allow-source-build-to-set-UsingToolMicrosoftNetCompi.patch b/src/SourceBuild/patches/runtime/0001-Allow-source-build-to-set-UsingToolMicrosoftNetCompi.patch
new file mode 100644
index 000000000..7e48a742d
--- /dev/null
+++ b/src/SourceBuild/patches/runtime/0001-Allow-source-build-to-set-UsingToolMicrosoftNetCompi.patch
@@ -0,0 +1,24 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Nikola Milosavljevic <nikolam@microsoft.com>
+Date: Wed, 25 Jan 2023 20:21:17 +0000
+Subject: [PATCH] Allow source-build to set UsingToolMicrosoftNetCompilers
+ property
+
+backport: https://github.com/dotnet/runtime/pull/81180
+---
+ eng/Versions.props | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/eng/Versions.props b/eng/Versions.props
+index a57587c74a8..15f65bc269b 100644
+--- a/eng/Versions.props
++++ b/eng/Versions.props
+@@ -22,7 +22,7 @@
+     <UsingToolIbcOptimization>false</UsingToolIbcOptimization>
+     <UsingToolXliff>false</UsingToolXliff>
+     <LastReleasedStableAssemblyVersion>$(AssemblyVersion)</LastReleasedStableAssemblyVersion>
+-    <UsingToolMicrosoftNetCompilers>true</UsingToolMicrosoftNetCompilers>
++    <UsingToolMicrosoftNetCompilers Condition="'$(DotNetBuildFromSource)' != 'true'">true</UsingToolMicrosoftNetCompilers>
+   </PropertyGroup>
+   <ItemGroup>
+     <WorkloadSdkBandVersions Include="$(SdkBandVersion)" SupportsMachineArch="true" />