https://github.com/RTradeLtd/Temporal/blob/d3749a5996a8a450c40413f54e5c856965a96dd8/Makefile#L109-L126

you'll want to run your `dep` installations first, and then after the fact pull in your `gx` dependencies. So for `go-ipfs` we ignore it within `Gopkg.toml`, then after building our normal dependencies we clone the version we need from github, and run `gx install`

see:
```
	( cd vendor/github.com/ipfs/go-ipfs ; git checkout $(IPFSVERSION) ; gx install --local --nofancy )
```