Maybe the following will help clarify the issue: The package being built needs the sources of the dependenc(y/ies) to be available in its GOPATH.
The build system needs to set the GOPATH such that the Go build system will find the the dependencies and build against them. I have a repository[1] where I'm currently working on definitions for IPFS before translating them for mainline guix. If you checkout commit f7f97edc635381384c3532eb8a2bd92cf10a5ac9 and look at the code there, you can see that I manually set up GOPATH in the build of go-log so that it can find go-logging (the modified version[2]). Now, when building, you need to lay out the code such that go is able to find everything, and in my code, I do that manually in the "setup-go-workspace" phase. I hope this will help clarify issues a bit. [1] (https://github.com/fredmanglis/guix-ipfs) [1] (https://github.com/whyrusleeping/go-logging) -- Frederick M. Muriithi
