Setting up a development environment

Download and install Visual Studio SDK

For the 2010 version go here

Git Checkout

Clone the Git-Source-Control-Provider repository and checkout the master branch for vs2010.

Edit project properties

Open the solution in VS and edit the properties of the BasicSccProvider project.

Go the the "Debug" tab and modify the "Start Action" to start Visual Studio. ( C:\Program Files\Microsoft Visual Studio 10.0\Common7\IDE\devenv.exe ) in my case.

Also change the "Command line arguments" to: "/rootsuffix Exp"

Done, start experimenting

When you press F5 a "Experimental instance" of Visual Studio will start up with the freshly compiled plugin enabled. You'll still need to select it in the "Source Control - Plug-In Selection" options screen. Just like you would when you'd install the plugin in the real Visual Studio.