// One of two flat-imported authors of a same-name type-returning function
// `Make :: ($T) -> Type`. Its body returns a two-field struct; b.sx's returns a
// one-field struct, so a bare `Make(s64)` head is a genuine collision the
// importing source cannot disambiguate.
Make :: ($T: Type) -> Type {
    return struct { x: T; y: T; };
}