installer.tasks.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFrameworks>netstandard2.0</TargetFrameworks>
    <TargetFrameworks Condition="'$(OS)' == 'Windows_NT'">$(TargetFrameworks);net46</TargetFrameworks>
    <EnableDefaultCompileItems>false</EnableDefaultCompileItems>
    <IsShipping>false</IsShipping>
  </PropertyGroup>

  <ItemGroup>
    <Compile Include="*.cs" />
    <Compile Include="BuildTools.Publish\**\*.cs" />
  </ItemGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.Extensions.DependencyModel" Version="$(MicrosoftExtensionsDependencyModelVersion)" />
    <PackageReference Include="Microsoft.DotNet.PlatformAbstractions" Version="2.1.0" />
    <PackageReference Include="NuGet.ProjectModel" Version="$(RefOnlyNugetProjectModelVersion)" />
    <PackageReference Include="NuGet.Packaging" Version="$(RefOnlyNugetPackagingVersion)" />
    <PackageReference Include="System.Reflection.Metadata" Version="1.7.0" />
  </ItemGroup>

  <Choose>
    <When Condition="'$(TargetFrameworkIdentifier)' == '.NETFramework'">
      <ItemGroup>
        <Compile Include="net46/ProcessSharedFrameworkDeps.net46.cs" />
      </ItemGroup>
      <ItemGroup>
        <Reference Include="Microsoft.Build.Framework" />
        <Reference Include="Microsoft.Build.Tasks.v4.0" />
        <Reference Include="Microsoft.Build.Utilities.v4.0" />
        <Reference Include="Microsoft.Build" />
        <Reference Include="System.IO.Compression.FileSystem" />
        <Reference Include="System.IO.Compression" />
      </ItemGroup>
    </When>
    <Otherwise>
      <ItemGroup>
        <PackageReference Include="Microsoft.Build" Version="$(RefOnlyMicrosoftBuildVersion)" />
        <PackageReference Include="Microsoft.Build.Framework" Version="$(RefOnlyMicrosoftBuildFrameworkVersion)" />
        <PackageReference Include="Microsoft.Build.Tasks.Core" Version="$(RefOnlyMicrosoftBuildTasksCoreVersion)" />
        <PackageReference Include="Microsoft.Build.Utilities.Core" Version="$(RefOnlyMicrosoftBuildUtilitiesCoreVersion)" />
        <PackageReference Include="System.Diagnostics.FileVersionInfo" Version="4.0.0" />
      </ItemGroup>
    </Otherwise>
  </Choose>

  <UsingTask TaskName="GetTargetMachineInfo"
             AssemblyFile="$(InstallerTasksAssemblyPath)" />
  <Target Name="CreateHostMachineInfoFile"
          AfterTargets="DispatchToInnerBuilds">
    <GetTargetMachineInfo>
      <Output PropertyName="HostMachineRid" TaskParameter="RuntimeIdentifier" />
    </GetTargetMachineInfo>

    <PropertyGroup>
      <HostMachineInfoPropsContent>
&lt;Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003"&gt;
  &lt;PropertyGroup&gt;
    &lt;HostMachineRid&gt;$(HostMachineRid)&lt;/HostMachineRid&gt;
  &lt;/PropertyGroup&gt;
&lt;/Project&gt;
      </HostMachineInfoPropsContent>
    </PropertyGroup>

    <WriteLinesToFile File="$(HostMachineInfoProps)"
                      Lines="$(HostMachineInfoPropsContent)"
                      Overwrite="True" />
  </Target>

</Project>