Multiple vhosts with Clamp

[aldorr]

Does anyone have an idea of how to set up the config file to be able to use virtual hosts in clamp?
I.e.:
mysite.local = the regular frontend... and
backend.mysite.local = the backend/cms on same server, just based in a different folder.

The Live server that I have copied the site from uses the alias module in Apache to make two different aliases: One for the frontend and one for the backend.

Thought it might work if I do something like:

    "host": {
        "options": {
            "127.0.0.1": "{{$.address}}", // address is "mysite.local" in this example
            "127.0.0.1/backend": "backend.mysite.local"
        }
    },

But obviously that is foolhardy. How might I go about this?
Thanks!