ref: ed37a0edd2a9c2f992d1f50c38203de7457e2a62
dir: /test/genericchain.myr/
use std
generic fail = {val : @a
	-> `std.Some val
}
generic try = {opt : std.option(@b)
	match opt
	| `std.Some v:	-> v
	| `std.None:	std.die("Badness\n")
	;;
}
const main = {
	std.put("val = {}\n", try(fail(123)))
}