Which components of OpenStudio are necessary to run Ladybug/Honeybee?

Hello,

I’m wondering which components of OpenStudio are necessary to run Ladybug/Honeybee.
(I wish to have an installation that’s as compact as possible)

There are the choices:

Energy Plus
Radiance
C# API
DView
Open Studio Application
Parametric Analysis Tool
Application Resources
Ruby API
Sketchup Plugin
Command Line Interface

I’m sure that some aren’t necessary, but I don’t know exactly which ones.

Thanks!
Thomas

You need only Radiance and Open Studio. Recommend also energyPlus (but if you have OS you don’t need it).
-a.