fixed more changes due to new I/O API

4 files changed, 14 insertions, 8 deletions

diff --git a/README.md b/README.md
index 5c930d2..bcf60db 100644
--- a/README.md
+++ b/README.md
@@ -72,7 +72,7 @@ the appropriate tag.
 The Zig language is under very active development. In order to be
 current, Ziglings tracks **development** builds of the Zig
 compiler rather than versioned **release** builds. The last
-stable release was `0.15.1`, but Ziglings needs a dev build with
+stable release was `0.15.2`, but Ziglings needs a dev build with
 pre-release version "0.16.0" and a build number at least as high
 as that shown in the example version check above.
 
@@ -86,6 +86,7 @@ that if you update one, you may need to also update the other.
 
 ### Version Changes
 
+* *2025-11-01* zig 0.16.0-dev.1204 - more changes due to new I/O API, see [#25592](https://github.com/ziglang/zig/pull/25592)
 * *2025-09-24* zig 0.16.0-dev.377 - Enable passing file content as args, see [#25228](https://github.com/ziglang/zig/pull/25228)
 * *2025-09-03* zig 0.16.0-dev.164 - changes in reader, see [#25077](https://github.com/ziglang/zig/pull/25077)
 * *2025-08-15* zig 0.15.0-dev.1519 - changes in array list, see [#24801](https://github.com/ziglang/zig/pull/24801)
diff --git a/build.zig b/build.zig
index 2a16899..bc0b23e 100644
--- a/build.zig
+++ b/build.zig
@@ -15,7 +15,7 @@ const print = std.debug.print;
 //     1) Getting Started
 //     2) Version Changes
 comptime {
-    const required_zig = "0.16.0-dev.377";
+    const required_zig = "0.16.0-dev.1204";
     const current_zig = builtin.zig_version;
     const min_zig = std.SemanticVersion.parse(required_zig) catch unreachable;
     if (current_zig.order(min_zig) == .lt) {
diff --git a/exercises/104_threading.zig b/exercises/104_threading.zig
index 638769f..d0a640b 100644
--- a/exercises/104_threading.zig
+++ b/exercises/104_threading.zig
@@ -106,7 +106,7 @@ pub fn main() !void {
 
         // After the threads have been started,
         // they run in parallel and we can still do some work in between.
-        std.Thread.sleep(1500 * std.time.ns_per_ms);
+        std.posix.nanosleep(1, 0);
         std.debug.print("Some weird stuff, after starting the threads.\n", .{});
     }
     // After we have left the closed area, we wait until
@@ -117,12 +117,12 @@ pub fn main() !void {
 // This function is started with every thread that we set up.
 // In our example, we pass the number of the thread as a parameter.
 fn thread_function(num: usize) !void {
-    std.Thread.sleep(200 * num * std.time.ns_per_ms);
+    std.posix.nanosleep(1 * num, 0);
     std.debug.print("thread {d}: {s}\n", .{ num, "started." });
 
     // This timer simulates the work of the thread.
     const work_time = 3 * ((5 - num % 3) - 2);
-    std.Thread.sleep(work_time * std.time.ns_per_s);
+    std.posix.nanosleep(work_time, 0);
 
     std.debug.print("thread {d}: {s}\n", .{ num, "finished." });
 }
diff --git a/patches/patches/104_threading.patch b/patches/patches/104_threading.patch
index 1ca46c1..bd02cc0 100644
--- a/patches/patches/104_threading.patch
+++ b/patches/patches/104_threading.patch
@@ -1,6 +1,6 @@
---- exercises/104_threading.zig	2024-04-10 19:12:29.878856370 +0200
-+++ answers/104_threading.zig	2024-04-10 19:11:22.304265713 +0200
-@@ -97,12 +97,12 @@
+--- exercises/104_threading.zig	2025-11-01 15:37:31.299815135 +0100
++++ answers/104_threading.zig	2025-11-01 15:39:28.774262735 +0100
+@@ -97,16 +97,16 @@
          defer handle.join();
  
          // Second thread
@@ -15,3 +15,8 @@
  
          // After the threads have been started,
          // they run in parallel and we can still do some work in between.
+-        std.posix.nanosleep(1, 0);
++        std.posix.nanosleep(4, 0);
+         std.debug.print("Some weird stuff, after starting the threads.\n", .{});
+     }
+     // After we have left the closed area, we wait until