Show package .props and .targets files in Solution Explorer

[drewnoakes]

NuGet packages can contain .props and .targets files that influence the referencing project's build in potentially surprising ways.

As part of incremental build performance investigations, we've seen package build files impacting builds in ways that break incrementality.

Such files can have a significant impact upon a project's build. Currently the fact that a package customises build is largely hidden from the user. You can find this information by drilling into the "Imports" tree, but you have to know where to look and even then you have to drill in a few levels deep.

In the following example, both the Shouldly package and the EmptyFiles package contain build customisation:

Making these files visible as children of package reference nodes will help expose this property of packages, where applicable.

Double-clicking such nodes should open the file in the editor in a read-only buffer.