Can't pull from go.uber.org

[benley]

This seems closely related to #3 and #4; I'm not sure why it's failing for me.

A project I'm trying to build has an indirect dependency on go.uber.org/atomic in Gopkg.lock, and dep2nix is unable to fetch it:

* Processing: "go.uber.org/atomic"
error fetching project: Unable to get repository

In Gopkg.lock:

[[projects]]
  digest = "1:3c1a69cdae3501bf75e76d0d86dc6f2b0a7421bc205c0cb7b96b19eed464a34d"
  name = "go.uber.org/atomic"
  packages = ["."]
  pruneopts = "UT"
  revision = "1ea20fb1cbb1cc08cbd0d913a96dead89aa18289"
  version = "v1.3.2"

I'm running dep2nix @ 3c3dfda, which looks like it ought to be able to handle this, so I'm not sure what the problem is.

[roastiek]

The problem is that go.uber.org/atomic can be imported as github.com/uber-go/atomic, too. When Gopkg.lock contains both, then the second checkout of atomic fails because the checkout directory already exists.