[Distutils] virtualenv not respecting --no-site-packages for ZODB3?

[Noah Gift]

I am getting the following behavior when using virtualenv to  
easy_install ZODB3.

[ngift at Macintosh-7][H:10256][J:0]# virtualenv --no-site-packages zodbENV
New python executable in zodbENV/bin/python
Installing setuptools..........................done.
[ngift at Macintosh-7][H:10257][J:0]# zodbENV/bin/easy_install ZODB3
Searching for ZODB3
Best match: ZODB3 3.8.0
Processing ZODB3-3.8.0-py2.5-macosx-10.5-i386.egg
Adding ZODB3 3.8.0 to easy-install.pth file
Installing mkzeoinst script to /Users/ngift/Documents/writing/IBM/ZODB/ 
zodbENV/bin
Installing fstail script to /Users/ngift/Documents/writing/IBM/ZODB/ 
zodbENV/bin
Installing zeopack script to /Users/ngift/Documents/writing/IBM/ZODB/ 
zodbENV/bin
Installing runzeo script to /Users/ngift/Documents/writing/IBM/ZODB/ 
zodbENV/bin
Installing zeopasswd script to /Users/ngift/Documents/writing/IBM/ZODB/ 
zodbENV/bin
Installing zeoctl script to /Users/ngift/Documents/writing/IBM/ZODB/ 
zodbENV/bin
Installing fsdump script to /Users/ngift/Documents/writing/IBM/ZODB/ 
zodbENV/bin
Installing fsrefs script to /Users/ngift/Documents/writing/IBM/ZODB/ 
zodbENV/bin
Installing repozo script to /Users/ngift/Documents/writing/IBM/ZODB/ 
zodbENV/bin
Installing fsoids script to /Users/ngift/Documents/writing/IBM/ZODB/ 
zodbENV/bin

Using /Library/Python/2.5/site-packages/ZODB3-3.8.0-py2.5-macosx-10.5- 
i386.egg
Processing dependencies for ZODB3
Searching for zope.interface
Reading http://pypi.python.org/simple/zope.interface/
Reading http://zope.org/Wikis/Interfaces/FrontPage
Best match: zope.interface 3.4.1
Downloading http://pypi.python.org/packages/source/z/zope.interface/zope.interface-3.4.1.tar.gz#md5 
=b085f4a774adab688e037ad32fbbf08e
Processing zope.interface-3.4.1.tar.gz
Running zope.interface-3.4.1/setup.py -q bdist_egg --dist-dir /var/ 
folders/LZ/LZFo5h8JEW4Jzr+ydkXfI++++TI/-Tmp-/easy_install-2eJgo2/ 
zope.interface-3.4.1/egg-dist-tmp-qzXWo6
Adding zope.interface 3.4.1 to easy-install.pth file

Installed /Users/ngift/Documents/writing/IBM/ZODB/zodbENV/lib/ 
python2.5/site-packages/zope.interface-3.4.1-py2.5-macosx-10.5-i386.egg
Finished processing dependencies for ZODB3