使用`go get`在本地构建时，去依赖依赖类型错误

Here's a simplified version of my file structure

├── honeyelb
|   └── main.go
├── state
|   └── state.go
└── vendor
    └── ...

Both honeyelb/main.go and state/main.go are importing the same aws-sdk-go dependency as follows:

import (
    ...
    "github.com/aws/aws-sdk-go/aws/session"
)

Additionally, honeyelb/main.go imports state/state.go as a dependency as follows:

import (
  ...
  "github.com/honeycombio/honeyaws/state"
)

When I use go get github.com/honeycombio/honeyaws/cmd/honeyelb the tool installs fine, and there's no complaints about dependencies.

The problem is when I try to go build honeyelb/main.go locally; I can see that honeyelb/main.go and state/state.go are pulling the aws/session dependency from different locations:

cmd/honeyelb2/main.go:99:41: cannot use sess (type *"github.com/aws/aws-sdk-go/aws/session".Session) as type *"github.com/honeycombio/honeyaws/vendor/github.com/aws/aws-sdk-go/aws/session".Session in argument to state.NewDynamoDBStater

How do I get them to both build from the dependencies in vendor/?