#exe {
-Mroot=main.zig
#}

#write main.zig {
const std = @import("std");
const io = std.Io.Threaded.global_single_threaded.io();
pub fn main() !void {
    try std.Io.File.stdout().writeStreamingAll(io, @import("foo.zon").message);
}
#}
#write foo.zon {
.{
    .message = "Hello, World!\n",
    .a_number = 0,
}
#}
#update
#check stdout {
Hello, World!
#}

#write foo.zon {
.{
    .message = "Hello again, World!\n",
    .b_number = 0,
}
#}
#update {
change ZON file#}
#check stdout {
Hello again, World!
#}
