Why is Importing with Vendoring in Go 1.6 Difficult for Some?

Importing with Vendoring in Go 1.6

Despite extensive documentation and community assistance, importing using the vendor feature in Go 1.6 has proven elusive for some.

Question:

A developer struggled to import using the vendor feature with a sample project structured as follows:

Directory Structure:

.
└── src
    ├── main.go
    └── vendor
        └── github.com
            └── zenazn
                └── goji
                    ├── LICENSE
                    ├── README.md
                    ├── bind
                    ├── default.go
                    ├── example
                    ├── goji.go
                    ├── graceful
                    ├── serve.go
                    ├── serve_appengine.go
                    └── web

Main.go:

package main

import (
    "fmt"
    "net/http"

    "github.com/zenazn/goji"
    "github.com/zenazn/goji/web"
)

func hello(c web.C, w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "Hello, %s!", c.URLParams["name"])
}

func main() {
    goji.Get("/hello/:name", hello)
    goji.Serve()
}

Environment Variables:

export GOPATH=~/.go
export GOBIN=$GOPATH/bin
export PATH=$PATH:/usr/local/opt/go/libexec/bin:$GOBIN

Answer:

A fundamental understanding of how Go tools handle source code and GOPATH is crucial. Here's how to import with vendoring:

• Create a directory under $GOPATH/src, e.g.: mkdir $GOPATH/src/myprogram
• Place the source code and vendor directory within the created directory: $GOPATH/src/myprogram/main.go and $GOPATH/src/myprogram/vendor
• Execute go install myprogram to build the application and place the binary in $GOPATH/bin/myprogram

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