init-source-only.proj

<Project>

  <!-- This project must not use any prebuilts -->

  <PropertyGroup>
    <SkipArcadeSdkImport>true</SkipArcadeSdkImport>
    <!-- Fake, to satisfy the SDK. -->
    <TargetFramework>netstandard2.0</TargetFramework>
    <DisableImplicitFrameworkReferences>true</DisableImplicitFrameworkReferences>
    <EnableDefaultItems>false</EnableDefaultItems>
  </PropertyGroup>

  <Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk" />
  <Import Project="Sdk.targets" Sdk="Microsoft.NET.Sdk" />

  <PropertyGroup>
    <ExternalTarballsDir>$([MSBuild]::NormalizeDirectory('$(PrereqsPackagesDir)', 'archive'))</ExternalTarballsDir>
  </PropertyGroup>

  <Target Name="Build"
          DependsOnTargets="
      UnpackTarballs;
      BuildMSBuildSdkResolver;
      ExtractToolsetPackages" />

  <!-- Unpacks the Private.SourceBuilt.Artifacts archive -->
  <Target Name="UnpackSourceBuiltArtifactsArchive"
          Condition="'$(CustomPrebuiltSourceBuiltPackagesPath)' == ''"
          Inputs="$(ExternalTarballsDir)"
          Outputs="$(PrebuiltSourceBuiltPackagesPath)">
    <MakeDir Directories="$(PrebuiltSourceBuiltPackagesPath)" />
    <Exec Command="tar -xzf $(ExternalTarballsDir)$(SourceBuiltArtifactsTarballName).*$(ArchiveExtension)"
          WorkingDirectory="$(PrebuiltSourceBuiltPackagesPath)" />
  </Target>

  <!-- Check for a prebuilt dependency tarball and extract if exists. If there isn't one, we expect
       the build to be working without prebuilts. -->
  <Target Name="UnpackSourceBuiltPrebuiltsArchive"
          Inputs="$(ExternalTarballsDir)"
          Outputs="$(PrebuiltPackagesPath)">
    <ItemGroup>
      <SourceBuiltPrebuiltsTarballFile Include="$(ExternalTarballsDir)$(SourceBuiltPrebuiltsTarballName).*$(ArchiveExtension)" />
    </ItemGroup>

    <Exec Command="tar -xzf %(SourceBuiltPrebuiltsTarballFile.FullPath)"
          WorkingDirectory="$(PrebuiltPackagesPath)"
          Condition="'@(SourceBuiltPrebuiltsTarballFile)' != ''" />
  </Target>

  <!-- Copy SBRP packages to reference packages location. -->
  <Target Name="CopySourceBuiltReferencePackages"
          DependsOnTargets="UnpackSourceBuiltArtifactsArchive"
          Inputs="$(PrebuiltSourceBuiltPackagesPath)SourceBuildReferencePackages"
          Outputs="$(ReferencePackagesDir)">
    <ItemGroup>
      <UnpackedSourceBuildReferencePackage Include="$(PrebuiltSourceBuiltPackagesPath)SourceBuildReferencePackages/*" />
    </ItemGroup>

    <!-- When building iteratively (e.g. making infra changes), the directory may already exist and needs to be cleaned up. -->
    <RemoveDir Directories="$(ReferencePackagesDir)" />

    <!-- Either move or copy the unpacked SBRP packages.
         Don't move when the packages directory is externally provided. -->
    <Move SourceFiles="@(UnpackedSourceBuildReferencePackage)"
          DestinationFolder="$(ReferencePackagesDir)"
          Condition="'$(CustomPrebuiltSourceBuiltPackagesPath)' == ''" />
    <Copy SourceFiles="@(UnpackedSourceBuildReferencePackage)"
          DestinationFolder="$(ReferencePackagesDir)"
          Condition="'$(CustomPrebuiltSourceBuiltPackagesPath)' != ''" />
  </Target>

  <Target Name="UnpackTarballs"
          DependsOnTargets="UnpackSourceBuiltArtifactsArchive;
                            UnpackSourceBuiltPrebuiltsArchive;
                            CopySourceBuiltReferencePackages" />

  <!-- Build the custom msbuild sdk resolver. -->
  <Target Name="BuildMSBuildSdkResolver"
          DependsOnTargets="UnpackTarballs"
          Inputs="$(MSBuildProjectFullPath)"
          Outputs="$(BaseIntermediateOutputPath)BuildMSBuildSdkResolver.complete">
    <MSBuild Projects="$(TasksDir)Microsoft.DotNet.UnifiedBuild.MSBuildSdkResolver\Microsoft.DotNet.UnifiedBuild.MSBuildSdkResolver.csproj"
             Targets="Restore"
             Properties="MSBuildRestoreSessionId=$([System.Guid]::NewGuid())" />

    <MSBuild Projects="$(TasksDir)Microsoft.DotNet.UnifiedBuild.MSBuildSdkResolver\Microsoft.DotNet.UnifiedBuild.MSBuildSdkResolver.csproj"
             Targets="Build" />

    <MakeDir Directories="$(BaseIntermediateOutputPath)" />
    <Touch Files="$(BaseIntermediateOutputPath)BuildMSBuildSdkResolver.complete" AlwaysCreate="true">
      <Output TaskParameter="TouchedFiles" ItemName="FileWrites" />
    </Touch>
  </Target>

  <!-- Extract toolset packages into the bootstrap folder -->
  <Target Name="ExtractToolsetPackages" DependsOnTargets="UnpackTarballs">
    <ItemGroup>
      <ToolsetPackage Include="Microsoft.DotNet.Arcade.Sdk" SourceFolder="$(PrebuiltSourceBuiltPackagesPath)" Version="$(ARCADE_BOOTSTRAP_VERSION)" />
      <ToolsetPackage Include="Microsoft.Build.NoTargets" SourceFolder="$(ReferencePackagesDir)" Version="$(NOTARGETS_BOOTSTRAP_VERSION)" />
      <ToolsetPackage Include="Microsoft.Build.Traversal" SourceFolder="$(ReferencePackagesDir)" Version="$(TRAVERSAL_BOOTSTRAP_VERSION)" />
    </ItemGroup>

    <ItemGroup>
      <ToolsetPackage Destination="$(BootstrapPackagesDir)$([System.String]::Copy('%(ToolsetPackage.Identity)').ToLowerInvariant())/%(ToolsetPackage.Version)" />
    </ItemGroup>

    <Unzip SourceFiles="%(ToolsetPackage.SourceFolder)%(ToolsetPackage.Identity).%(ToolsetPackage.Version).nupkg"
           DestinationFolder="%(ToolsetPackage.Destination)"
           SkipUnchangedFiles="true" />

    <WriteLinesToFile File="$(ArtifactsDir)/toolset/bootstrap-sdks.txt"
                      Lines="@(ToolsetPackage->Metadata('Destination'))"
                      Overwrite="true" />
  </Target>

</Project>