Venvs should be regarded as throwaway; there is really no reason to add other files (e.g. project files) to venvs.

Two common patterns are:

1. Use a single place for all venvs (virtualenvwrapper does this)
2. Use a venv in a subdirectory of a project directory

The current implementation follows PEP 405, and the functionality was discussed on python-dev before being finalised.