scripts/mkvirtenv.py busted on OSX

gistfile1.txt

derks-macbook [holland] $ ./scripts/mkvirtenv.py 
New python executable in /Users/wdierkes/holland-test/bin/python
Installing setuptools............................done.
[INFO] Installed holland-core.
[INFO] Installing holland plugins
[INFO] Installed plugin holland.lib.common
[INFO] Installed plugin holland.lib.mysql
[INFO] Installed plugin holland.lib.lvm
[INFO] Installed plugin holland.backup.mysqldump
[INFO] Installed plugin holland.backup.mysql_lvm
[INFO] Installed plugin holland.backup.xtrabackup
Traceback (most recent call last):
 File "./scripts/mkvirtenv.py", line 215, in <module>
   sys.exit(main())
 File "./scripts/mkvirtenv.py", line 208, in main
   install_configs(home_dir)
 File "./scripts/mkvirtenv.py", line 160, in install_configs
   from holland.core import Config
ImportError: No module named holland.core