Adapters in go

fooer_bad.go

package main

type Goaled interface {
	Goaled() bool
}

type Sane interface {
	Sane() bool
}	

func (goaled Goaled) Sane() bool {
	return !goaled.Goaled()
}

func main() {
}

fooer_dumb.go

package main

type Goaled interface {
	Goaled() bool
}

type Sane interface {
	Sane() bool
}	

type saneGoaled struct{goaled Goaled}

func (sg *saneGoaled) Sane() bool {
	return !sg.goaled.Goaled()
}

func main() {
}

Adapters in Go

fooer_bad.go fails to compile:

/tmp/sandbox152930166/main.go:11: invalid receiver type Goaled (Goaled is an interface type)

fooer_dumb.go compiles but has a dumb pointless adapter type.

Is there a more graceful solution to adapters in Go?