Compilation error when using REQ_LEFT

[kallerosenbaum]

I'm running into problems using REQ_LEFT.

The following code doesn't compile:

package main

import (
	gc "github.com/rthornton128/goncurses"
)

func main() {
	menuWin, _ := gc.Init()

	gc.Raw(true)
	gc.Echo(false)
	menuWin.Keypad(true)
	gc.Cursor(0)

	menuWin.Keypad(true)
	itemPos, _ := gc.NewItem("YES", "")
	itemNeg, _ := gc.NewItem("NO","")

	choices := []*gc.MenuItem {itemNeg, itemPos}
	menu, _ := gc.NewMenu(choices)
	menu.SetWindow(menuWin)
	height, width := dimensions(menuWin)
	menu.SubWindow(menuWin.Derived(height, width, 0, 0))

	menu.Format(1, 2)
	menu.Post()

	menuWin.Refresh()

	var key gc.Key
	for ; ; key = menuWin.GetChar(){
		switch key {
		case gc.KEY_RIGHT:
			menu.Driver(gc.REQ_RIGHT) // Works
		case gc.KEY_LEFT:
			menu.Driver(gc.REQ_LEFT) // Compilation error
		}
	}

	gc.End()
}

func dimensions(w *gc.Window) (height int, width int) {
	y, x := w.YX()
	maxy, maxx := w.MaxYX()
	height = maxy - y
	width = maxx - x
	return
}

Compilation error:

$ go build req_left.go 
# command-line-arguments
./req_left.go:36:15: cannot use goncurses.REQ_LEFT (type goncurses.MenuDriverReq) as type int in argument to menu.Driver

However if I change REQ_LEFT to REQ_RIGHT it does compile.

$ go version
go version go1.13.8 linux/amd64

goncurses version seems to be v0.0.0-20200419155752-a72cfe131f63 according to my go.mod file.