quartzcore - placing a CALayer inside an NSView?

[Mark Aufflick]

I'm looking at GNUstep NSView and the quartzcore demo app and it looks 
to me like rendering into an NSOpenGLView is the only way to show a 
CALayer at the moment - is that right?

Changing NSView will be a big task, but I'm thinking as an interim of 
making a generic NSLayerHostingView class based on the DemoOpenGLView - 
is that a reasonable approach?

Cheers,

Mark.