Interfaces or pointers in struct definitions

[ivancorrales]

Just wondering if gocofig will consider dealing with interfaces and pointers in struct definitions

Currently I have the below code :

package core

import (
	"github.com/fulldump/goconfig"
	"laika/pkg/provider"
)

var Config *LaikaConfig

type LaikaConfig struct {
	Provider Provider
}

func init(){
	Config = defaultConfiguration()
	goconfig.Read(Config)
}

func defaultConfiguration() *LaikaConfig {
	return &LaikaConfig{
		Provider: Slack{
			Token: "********,
		},
	}
}

type Provider interface {
	GetSecurityInfo() map[string]string
}


type Slack struct {
	//Token field
	Token string
	//Channel field
	Channel string
}


func (slack Slack) GetSecurityInfo() map[string]string{
	return map[string]string{
		provider.SlackToken: slack.Token,
	}
}

and the attached error occurs.