IncludeBuildOutput = false causes some issues

[wasabii]

I use a NoTargets project to generate a NuGet package that contains multiple different ProjectReference's build output. So, the generated nupkg has multiple files in lib/tfm. Seems a typical pattern.

NoTargets sets IncludeBuildOutput to false for obvious reasons: NoTargets projects don't have their own build output.

However, IncludeBuildOutput is used elsewhere in the SDK code. It is also used during pack in _WalkEachTargetFramework to determine whether or not to invoke $(TargetsForTfmSpecificBuildOutput) and $(TargetsForTfmSpecificDebugSymbolsInPackages). These two properties are generally used to do what I'm trying to do: include the build output of ProjectReferences into the Nuget package.

I haven't found anything wrong with setting IncludeBuildOutput to true. It doesn't break because of the missing primary output.