Move most of the tarball build into MSBuild (#1583)

Author: dagood

Directory.Build.props

@@ -110,8 +110,8 @@
     <BaseIntermediatePath>$(BaseOutputPath)obj/</BaseIntermediatePath>
     <OutputPath>$(BaseOutputPath)$(Platform)/$(Configuration)/</OutputPath>
     <IntermediatePath>$(BaseIntermediatePath)$(Platform)/$(Configuration)/</IntermediatePath>
-    <GeneratedSourcePathOnline>$(IntermediatePath)generatedSrc</GeneratedSourcePathOnline>
-    <GeneratedSourcePathOffline>$(SubmoduleDirectory)generatedSrc</GeneratedSourcePathOffline>
+    <GeneratedSourcePathOnline>$(IntermediatePath)generatedSrc/</GeneratedSourcePathOnline>
+    <GeneratedSourcePathOffline>$(SubmoduleDirectory)generatedSrc/</GeneratedSourcePathOffline>
     <LocalBlobStorageRoot>$(IntermediatePath)blobs/</LocalBlobStorageRoot>
     <LocalNuGetPackagesRoot>$(IntermediatePath)nuget-packages/</LocalNuGetPackagesRoot>
     <SourceBuiltBlobFeedDir>$(IntermediatePath)blob-feed/</SourceBuiltBlobFeedDir>

Directory.Build.targets

@@ -10,6 +10,43 @@
     </ItemGroup>
   </Target>
 
+  <Target Name="AcquireDarc"
+          Condition="
+            '$(OfflineBuild)' != 'true' and
+            '$(SkipAcquireDarc)' != 'true'">
+    <MSBuild
+      Projects="$(MSBuildThisFileDirectory)tools-local\acquire-darc\acquire-darc.proj"
+      Targets="AcquireDarcCore" />
+  </Target>
+
+  <Target Name="GetCommonDarcCloneCommand" DependsOnTargets="AcquireDarc">
+    <PropertyGroup>
+      <IgnoredRepos>$(IgnoredRepos);https://dev.azure.com/dnceng/internal/_git/dotnet-optimization</IgnoredRepos>
+      <IgnoredRepos>$(IgnoredRepos);https://dev.azure.com/devdiv/DevDiv/_git/DotNet-Trusted</IgnoredRepos>
+      <IgnoredRepos>$(IgnoredRepos);https://devdiv.visualstudio.com/DevDiv/_git/DotNet-Trusted</IgnoredRepos>
+      <IgnoredRepos>$(IgnoredRepos);https://dnceng@dev.azure.com/dnceng/internal/_git/dotnet-optimization</IgnoredRepos>
+      <IgnoredRepos>$(IgnoredRepos);https://dev.azure.com/dnceng/internal/_git/dotnet-core-setup</IgnoredRepos>
+      <IgnoredRepos>$(IgnoredRepos);https://github.com/dotnet/source-build-reference-packages</IgnoredRepos>
+
+      <DarcCloneReposFolder Condition="'$(DarcCloneReposFolder)' == ''">$(ClonedSubmoduleDirectory)</DarcCloneReposFolder>
+
+      <DarcCloneArguments>$(DarcCloneArguments) --git-dir-folder $(ClonedSubmoduleGitRootDirectory)</DarcCloneArguments>
+      <DarcCloneArguments>$(DarcCloneArguments) --include-toolset</DarcCloneArguments>
+      <DarcCloneArguments>$(DarcCloneArguments) --ignore-repos "$(IgnoredRepos)"</DarcCloneArguments>
+      <DarcCloneArguments>$(DarcCloneArguments) --debug</DarcCloneArguments>
+
+      <!-- required so Darc doesn't throw an error for missing auth -->
+      <AzDoPat Condition="'$(AzDoPat)' == ''">bogus</AzDoPat>
+      <DarcCloneArguments>$(DarcCloneArguments) --azdev-pat $(AzDoPat)</DarcCloneArguments>
+      <DarcCloneArguments>$(DarcCloneArguments) --github-pat bogus</DarcCloneArguments>
+
+      <!-- depth 0 should be sufficient for us since we explictly declare all our dependencies -->
+      <DarcCloneArguments>$(DarcCloneArguments) --depth 0</DarcCloneArguments>
+
+      <DarcCloneCommand>$(DotNetCliToolDir)dotnet $(DarcDll) clone $(DarcCloneArguments)</DarcCloneCommand>
+    </PropertyGroup>
+  </Target>
+
   <Import Condition="'$(SkipArcadeSdkImport)' != 'true'" Project="Sdk.targets" Sdk="Microsoft.DotNet.Arcade.Sdk" />
 
   <Target Name="GetProdConBlobFeedUrl">