NixOS/nixops — pull request #170 by rickynils (2014-03-30 10:30:23+00:00)
Title: Add deployment.copyClosures option

With deployment.copyClosures set to false, no closures
are copied to the deployed machine. This is useful if
the Nix store is shared from the machine running nixops
to the deployed machine in some way.

There is still no good way to bootstrap such deployments,
but you can use it for existing deployments.