Better distinction for System packages

[psmulovics]

There are packages (like https://www.nuget.org/packages/System.Reactive/4.0.0-preview00001 ) which does start with "System." but are not part of the builtin/system dependencies.

[richorama]

Good point. Any idea where I can get a list of genuine 'system' packages?

[psmulovics]

hm, no better idea than asking the nuget team...