ref: bfb7664b7f66e0d9e406672fa92bdee35bced70b
dir: /test/genericmake.myr/
use std
type t(@ty) = union
	`Some @ty
	`None
;;
const make = {v
	-> `Some v
}
const main = {
	var x
	x = make(123)
	match x
	| `std.Some v:	std.put("val = {}\n", v)
	| `std.None:	std.die("Unreachable\n")
	;;
}