XmlPoke task not available in .NET Core

Repro:

<Project>
   <Target Name="Build">
      <XmlPoke />
   </Target>
</Project>

dotnet msbuild /t:Build

Error

poke.proj(3,7): error MSB4062: The “Microsoft.Build.Tasks.XmlPoke” task could not be loaded from the assembly Microsoft.Build.Tasks.Core, Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a. Confirm that the <UsingTask> declaration is correct, that the assembly and all its dependencies are available, and that the task contains a public class that implements Microsoft.Build.Framework.ITask.

Expected Same behavior as MSBuild.exe (full framework)

Details dotnet.exe version: 1.0.0-rc4-004842 MSBuild version: 15.1.548.43366

cc @rainersigwald @jeffkl

[rainersigwald]

We should bring them back though. We can count this as a vote for pushing this one earlier in the list.

Could have been missing APIs, could have been “not used in our selfhost or the corefx repo and thus we never noticed it wasn’t there”. We should make sure anything missing in vNext is missing for a good reason.

[jeffkl]

We already reference System.Xml.XmlDocument which depends on System.Xml.XPath and System.Xml.XPath.XmlDocument. So having them compiled in just worked. I’ve submitted a PR to see how it does on non-Windows…