mitchellh/vagrant — pull request #1914 by b2jrock (2013-07-11 01:30:14+00:00)
Title: Highly limited osx (darwin) guest plugin.

Not perfect, but some might find it useful.

- Tested on mountainlion/virtualbox
- virtualbox shared folders will not work (no vboxvsf support)
- Must use at least 2GB of RAM or the os will refuse to boot(mountainlion requirement)

To begin, create a mountainlion vm in virtualbox. You will need to install from scratch most likely, and assign at least 2GB of ram for it to install.

Create 2 network interfaces, the first one a NAT interface, second a hostonly interface.

'vagrant package' the VM.

In your vagrant file, be sure that the synced folder is disabled:
config.vm.synced_folder "vagrant", "/vagrant", disabled: true