[Distutils] pythonv, take two

[P.J. Eby]

At 01:35 PM 3/30/2011 -0400, Carl Meyer wrote:
>So... it seems to me that we're likely to break _some_ third-party code
>using sys.prefix regardless of what we do here. My instinct says adding
>sys.virtual_prefix and leaving sys.prefix alone is the better approach,
>but I'm not very firmly entrenched in that position.

Looking at it from a software distribution POV, I would say that the 
virtual prefix is what it should point to, since that means things 
won't get installed to the wrong place.

(Of course, a configuration option could be used to override it, if 
really necessary.)