pypa/virtualenv — pull request #222 by CBWhiz (2012-02-06 06:06:33+00:00)
Title: Copy python_d.exe to virtualenv if exists. (For creation from python build environment)

It would be beneficial to copy python_d.exe (the debug executable) into the new virtualenv. This would be very convenient for switching between virtualenvs when doing extension module development.

In addition to python_d.exe, pythonXX.dll also needs to be copied.