Currently, providers must match a box format exactly the same
as that provider's name. i.e. the virtuabox provider needs a
"virtualbox" box and the "vmware_fusion" provider needs a
"vmware_fusion" box. Now, the provider can specify what the box format
is they want and support multiple if wanted.
Other box formats are specified in the provider definition within
a plugin:
class Plugin < Vagrant.plugin("2", "provider")
# ... other stuff
provider("foo", box_format: ["virtualbox", "other_format"]) do
# .. same
end
end
Now when using the example "foo" provider above, boxes for both
"virtualbox" or "other_format" are searched for. If both are found,
the order in which the formats exist determines precedence.
See the code and comments for details on how this is done. As usual, we
are very careful about this so as not to inadvertently destruct real
user data.
The local data path is set to the `ROOT_DIR/.vagrant` by default and is
a directory where Vagrant can store environment-local state. This can be
overriden on a per-Environment basis using the `local_data_path`
option.
Boxes are provider-specific, and we don't know the provider until
Environment#machine is called, so we need to build up the machine
configuration during this time.
This will eventually replace the Environment#vms method. Because of the
introduction of providers, the environment doesn't know what the backing
of the machines will be (and they're _machines_ now, not _vms_).
Instead, users of Environment will now call `#machine` on the
environment to retrieve a machine with the given backing provider as it
needs it.
This involved defaulting all box searching at the moment to VirtualBox.
Additionally, box upgrading is not yet handled. This needs to be done at
some point.
Tests before were picking up a Vagrantfile in the Vagrant source
directory, which can cause some funny failures. This ensures that each
test run will actually establish a new temporary CWD so that a
Vagrantfile is hopefully never found.
