[vs16.9] NuGet Feed Update (#6136)

Co-authored-by: Matt Mitchell <mmitche@microsoft.com>
Co-authored-by: Ben Villalobos <4691428+BenVillalobos@users.noreply.github.com>

NuGet.config

@@ -2,9 +2,8 @@
 <configuration>
   <packageSources>
     <clear />
-    <add key="dotnet-core" value="https://dotnetfeed.blob.core.windows.net/dotnet-core/index.json" />
     <add key="arcade" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-eng/nuget/v3/index.json" />
-    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />
+    <add key="dotnet-public" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json" />
     <add key="dotnet-tools" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-tools/nuget/v3/index.json" />
   </packageSources>
   <disabledPackageSources />

eng/Packages.props

@@ -4,7 +4,7 @@
     <PackageReference Update="LargeAddressAware" Version="1.0.3" />
     <PackageReference Update="Microsoft.Build.NuGetSdkResolver" Version="$(NuGetBuildTasksVersion)" />
     <PackageReference Update="Microsoft.CodeAnalysis.Build.Tasks" Version="$(MicrosoftNetCompilersToolsetVersion)" />
-    <PackageReference Update="Microsoft.DotNet.BuildTools.GenAPI" Version="2.1.0-prerelease-02404-02" />
+    <PackageReference Update="Microsoft.DotNet.GenAPI" Version="2.1.0-prerelease-02404-02" />
     <PackageReference Update="Microsoft.Extensions.DependencyModel" Version="2.1.0" />
     <PackageReference Update="Microsoft.Net.Compilers.Toolset" Version="$(MicrosoftNetCompilersToolsetVersion)" />
     <PackageReference Update="Microsoft.VisualStudio.SDK.EmbedInteropTypes" Version="15.0.15" />

src/Directory.Build.targets

@@ -82,9 +82,9 @@
     <GenAPIShortFrameworkIdentifier Condition="$(TargetFramework.StartsWith('netcoreapp'))">netstandard</GenAPIShortFrameworkIdentifier>
     <GenAPITargetPath>$(RepoRoot)ref\$(GenAPIAssemblyName)\$(GenAPIShortFrameworkIdentifier)\$(GenAPIAssemblyName).cs</GenAPITargetPath>
   </PropertyGroup>
-  
-  <ItemGroup Condition="'$(GenerateReferenceAssemblySources)' == 'true' and '$(OsEnvironment)'=='windows'">
-    <PackageReference Include="Microsoft.DotNet.BuildTools.GenAPI" PrivateAssets="All" />
+
+  <ItemGroup Condition="'$(GenerateReferenceAssemblySources)' == 'true' and $([MSBuild]::IsOSPlatform('windows'))">
+    <PackageReference Include="Microsoft.DotNet.GenAPI" PrivateAssets="All" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(IsUnitTestProject)' == 'true' And '$(TargetFrameworkIdentifier)' != '.NETFramework' ">

src/Utilities.UnitTests/TrackedDependencies/FileTrackerTests.cs

@@ -1,6 +1,8 @@
 // Copyright (c) Microsoft. All rights reserved.
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
+#if FEATURE_FILE_TRACKER
+
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
@@ -17,7 +19,6 @@
 using BackEndNativeMethods = Microsoft.Build.BackEnd.NativeMethods;
 
 // PLEASE NOTE: This is a UNICODE file as it contains UNICODE characters!
-#if FEATURE_FILE_TRACKER
 
 namespace Microsoft.Build.UnitTests.FileTracking
 {