Using NuGet Packages

There are three options for using NuGet packages:

1. Use nuget_package download a package from the internet.
2. Use import_nuget_package to point at a directory containing the contents of a package.
3. Use import_nuget_package to point at a .nupkg file.

(TODO: link to the API reference docs when we have them)

When you use any of these options and don't provide either build_file or build_file_content, a default BUILD file will be used that calls the setup_basic_nuget_package macro.

This macro uses import_library to import every DLL and import_multiframework_library to stitch them together into one target (see docs/MultiTargetingDesign.md for more info).

The downside to this is that it always leaves deps empty for these targets, because of limitations with how Bazel works. Your options are:

1. Create a better BUILD file from scratch (we should provide a tool to do this) and use build_file/build_file_content.
2. Always add the transitive references of your packages to your deps when you reference the package.