It would be nice to be able to use even the non-portable parts of the Workspaces layer without a dependency on the Build Tools MSI. We should consider factoring the MSBuildWorkspace dependency out into a separate assembly/package that people can opt in to.

From http://roslyn.codeplex.com/discussions/549372.