std.log.debug("got dlopen. init vulkan", .{});

    std.log.debug("allocAdvancedWithRetAddr: Call", .{});
    _ = try Alloc.allocAdvancedWithRetAddr(gpa, [*]const u8, 8, 64, .at_least, @returnAddress());
    std.log.debug("allocAdvancedWithRetAddr: Return", .{});

    // This loads shared libraries, so that when we dlopen libxcb.so.1, it will have
    // already been loaded by the vulkan driver. This requires a patch to Vulkan-Loader
    // to use RTLD_GLOBAL instead of RTLD_LOCAL.
    try createInstance(gpa);