Originally reported by Roland Schulz at https://bugs.launchpad.net/virtualenv/+bug/442780

It would be nice to have an option -copy or -nosymlink to force coping instead of symlinking. It can be very easily be done by just:
delattr(os,"symlink")

I wanted to create a virtual env in a network mounted directory. Thus
symlinks don't work because they point to the file on the computer where one
creates the virtual env which are not necessary available on other
machines/nodes.