1export fn entry() void {
 2    const f: union { foo: void } = @import("zon/void.zon");
 3    _ = f;
 4}
 5
 6// error
 7// imports=zon/void.zon
 8//
 9// void.zon:1:11: error: void literals are not available in ZON
10// void.zon:1:11: note: void union payloads can be represented by enum literals