Please answer these questions before submitting your issue. Thanks!

1. What version of Go are you using (go version)?
   go version go1.6.2 windows/amd64
2. What operating system and processor architecture are you using (go env)?
   windows64, i7
3. What did you do?
   First of all, my go path like following(on my computer)

Golang source code
----|---------C:\Go
----|--------------\bin
----|--------------\pkg
----|--------------\src

open source code
----|---------D:\opensource
----|----------------------\bin
----|----------------------\pkg
----|----------------------\src

master code branch (master)
----|---------D:\master
----|------------------\bin
----|------------------\pkg
----|------------------\src\customer.com\project_a

released code branch
----|---------D:\released
----|--------------------\v1
----|-----------------------\bin
----|-----------------------\pkg
----|-----------------------\src\customer.com\project_a
----|--------------------\v2
----|-----------------------\bin
----|-----------------------\pkg
----|-----------------------\src\customer.com\project_a

I'm working on master branch, and it's ok now, i can build, install, debug it.

I'll create a tag as the relase code after code complete, like v1 or v1-x.
Sometimes we need to add or merge functions to released branch(v1 or v2) then build and publish.

When i build code(in released folder), got error: .\main.go:12: dp.NewProp undefined (type dpack.DpackObject has no field or method NewProp).
I know this cause of the type in package does not contain such property, so i'm trying to install the package(in released folder).
Then got error: go install: no install location for D:\released\v1\src\wangxingge.com\Console\dpack: hidden by D:\master\src\wangxingge.com\Console\dpack.
That's mean released source code using master pkg, cause of import code was the same in all gopath.

1. What did you expect to see?
   Build pass and use the right package.
   My question is how to use the current path package when build or install correct.
2. What did you see instead?