I have an old-style nuget package with clientside files only. Thought I'd be clever and just add a buildTransient/mypackage.targets to it to make it compatible with sdk/dotnet. For some reason it totally ignores the target file and won't even run a conditionless pre build message. Anyone tried the same or have any ideas? I can't see any difference with other "compatible" packages, except that it doesn't have any dlls.