linkTtf needs updating.

[nmichaels]

linkTtf calls std.zig.system.NativeTargetInfo.detect, which is gone thanks to this breaking change.

Here's how far I got:

const target = (std.zig.system.resolveTargetQuery(exe.root_module.resolved_target.?.query) catch @panic("failed to detect native target info!"));

That's clearly wrong, but might have useful pointers for anyone who wants to pick this up. Alternatively, someone who actually knows how build.zig is supposed to work could maybe fix this easily.