MSBuild - Comparing ItemGroups metadata

Question

I am attempting to write a build script for our source tree. This tree consists of a (large) number of solutions with assembly references between them. I have created an I

Answer 1

Ah. Stumbled on an answer whilst playing around with this.

Firstly, I was investigating this post about getting the intersection of two item groups. I therefore changed my OutputNames item group to have the same Identity as the OutputProjects ItemGroup:

  ArbitraryFolder1


  ArbitraryFolder2

This let me batch on %(Identity) and get the intersection like this:

However, when also referring to the OutputFolder metadata in the same Task, that became part of the batching as well resulting in the following never printing to the output:

But, by using a transform over the property instead of direct access, it isn't treated as part of the batching:

Therefore, I can do the following to update my metadata:

  
  
    @(OutputNames->'%(OutputFolder)')