Directory.Build.props

<Project>
  <PropertyGroup>
    <ToolSharedSourceRoot>$(MSBuildThisFileDirectory)Shared\</ToolSharedSourceRoot>
    <Nullable>disable</Nullable>
  </PropertyGroup>

  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory)..\, Directory.Build.props))\Directory.Build.props" />

</Project>