Discrepancy between GAE Go SDK in dev and prod with regards to os.Getenv and env_variables

README.md

Deploy it for prod:

$ goapp deploy . 

Go to http://gae-test-1133.appspot.com/ (or replace with ) and notice that only one the runtime HELLO is the correct value: prefetched: "", runtime: "hello world"

Now run it in dev:

$ goapp serve . 

Go to http://localhost:8080 and both values are right: prefetched: "hello world", runtime: "hello world"

$ goapp version
go version go1.4.2 (appengine-1.9.28) darwin/amd64

app.go

package main

import (
	"fmt"
	"log"
	"net/http"
	"os"
)

var hello string

func init() {
	hello = os.Getenv("HELLO")
	log.Println(hello)

	http.Handle("/", http.HandlerFunc(handle))
}

func handle(w http.ResponseWriter, r *http.Request) {
	w.Write([]byte(fmt.Sprintf("prefetched: %q, runtime: %q", hello, os.Getenv("HELLO"))))
}

app.yaml

application: gae-test-1133 # or <your app id>
module: default
version: 1
runtime: go
api_version: go1

includes:
- env.yaml

handlers:
- url: /.*
  script: _go_app

env.yaml

env_variables:
  HELLO: 'hello world'