code: func loadEnv() {
  	gil.Lock()
  	defer gil.Unlock()
  
  	if os.Getenv("GO_ENV") == "" {
  		// if the flag "test.v" is *defined*, we're running as a unit test. Note that we don't care
  		// about v.Value (verbose test mode); we just want to know if the test environment has defined
  		// it. It's also possible that the flags are not yet fully parsed (i.e. flag.Parsed() == false),
  		// so we could not depend on v.Value anyway.
  		//
  		if v := flag.Lookup("test.v"); v != nil {
  			env["GO_ENV"] = "test"
  		}
  	}
  
  	// set the GOPATH if using >= 1.8 and the GOPATH isn't set
  	if os.Getenv("GOPATH") == "" {
  		out, err := exec.Command("go", "env", "GOPATH").Output()
  		if err == nil {
  			gp := strings.TrimSpace(string(out))
  			os.Setenv("GOPATH", gp)
  		}
  	}
  
  	for _, e := range os.Environ() {
  		pair := strings.Split(e, "=")
  		env[pair[0]] = os.Getenv(pair[0])
  	}
  }
docs: // Load the ENV variables to the env map