Installation
Install Vagrant from https://docs.vagrantup.com/v2/installation/
Install the Vagrant Berkfile plugin:
$ vagrant plugin install vagrant-berkshelf
This claims to require ChefDK, downloadable from: http://getchef.com/downloads/chef-dk
Install the Vagrant Chef omnibus plugin
$ vagrant plugin install vagrant-omnibus
Start the VM
$ vagrant up
This can take a few minutes as it needs to download Java from Oracle, and the Datomic jars.