10 files changed, 8 insertions, 127 deletions
diff --git a/patches/patches/026_hello2.patch b/patches/patches/026_hello2.patch
index f0224a1..f99cc67 100644
--- a/patches/patches/026_hello2.patch
+++ b/patches/patches/026_hello2.patch
@@ -1,9 +1,9 @@
---- exercises/026_hello2.zig	2023-10-03 22:15:22.122241138 +0200
-+++ answers/026_hello2.zig	2023-10-05 20:04:06.959431737 +0200
+--- exercises/026_hello2.zig	2025-07-22 09:55:51.337832401 +0200
++++ answers/026_hello2.zig	2025-07-22 10:00:11.233348058 +0200
 @@ -23,5 +23,5 @@
      // to be able to pass it up as a return value of main().
      //
      // We just learned of a single statement which can accomplish this.
--    stdout.print("Hello world!\n", .{});
-+    try stdout.print("Hello world!\n", .{});
+-    stdout.interface.print("Hello world!\n", .{});
++    try stdout.interface.print("Hello world!\n", .{});
  }
diff --git a/patches/patches/034_quiz4.patch b/patches/patches/034_quiz4.patch
index 8c0bc0e..15c95fc 100644
--- a/patches/patches/034_quiz4.patch
+++ b/patches/patches/034_quiz4.patch
@@ -1,15 +1,15 @@
---- exercises/034_quiz4.zig	2023-10-03 22:15:22.122241138 +0200
-+++ answers/034_quiz4.zig	2023-10-05 20:04:06.996099091 +0200
+--- exercises/034_quiz4.zig	2025-07-22 09:55:51.337832401 +0200
++++ answers/034_quiz4.zig	2025-07-22 10:05:08.320323184 +0200
 @@ -9,10 +9,10 @@
  
  const NumError = error{IllegalNumber};
  
 -pub fn main() void {
 +pub fn main() !void {
-     const stdout = std.io.getStdOut().writer();
+     var stdout = std.fs.File.stdout().writer(&.{});
  
 -    const my_num: u32 = getNumber();
 +    const my_num: u32 = try getNumber();
  
-     try stdout.print("my_num={}\n", .{my_num});
+     try stdout.interface.print("my_num={}\n", .{my_num});
  }
diff --git a/patches/patches/084_async.patch b/patches/patches/084_async.patch
deleted file mode 100644
index 11a9da0..0000000
--- a/patches/patches/084_async.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- exercises/084_async.zig	2023-10-03 22:15:22.125574535 +0200
-+++ answers/084_async.zig	2023-10-05 20:04:07.219436606 +0200
-@@ -48,7 +48,7 @@
- pub fn main() void {
-     // Additional Hint: you can assign things to '_' when you
-     // don't intend to do anything with them.
--    foo();
-+    _ = async foo();
- }
- 
- fn foo() void {
diff --git a/patches/patches/085_async2.patch b/patches/patches/085_async2.patch
deleted file mode 100644
index ba10b05..0000000
--- a/patches/patches/085_async2.patch
+++ /dev/null
@@ -1,10 +0,0 @@
---- exercises/085_async2.zig	2023-10-03 22:15:22.125574535 +0200
-+++ answers/085_async2.zig	2023-10-05 20:04:07.226103397 +0200
-@@ -19,6 +19,7 @@
- 
- pub fn main() void {
-     var foo_frame = async foo();
-+    resume foo_frame;
- }
- 
- fn foo() void {
diff --git a/patches/patches/086_async3.patch b/patches/patches/086_async3.patch
deleted file mode 100644
index d80d4a1..0000000
--- a/patches/patches/086_async3.patch
+++ /dev/null
@@ -1,16 +0,0 @@
---- exercises/086_async3.zig	2023-10-03 22:15:22.125574535 +0200
-+++ answers/086_async3.zig	2023-10-05 20:04:07.229436793 +0200
-@@ -13,7 +13,12 @@
-     const n = 5;
-     var foo_frame = async foo(n);
- 
--    ???
-+    // Silly solution. You can also use a loop.
-+    resume foo_frame;
-+    resume foo_frame;
-+    resume foo_frame;
-+    resume foo_frame;
-+    resume foo_frame;
- 
-     print("\n", .{});
- }
diff --git a/patches/patches/087_async4.patch b/patches/patches/087_async4.patch
deleted file mode 100644
index b1c1736..0000000
--- a/patches/patches/087_async4.patch
+++ /dev/null
@@ -1,21 +0,0 @@
---- exercises/087_async4.zig	2023-10-03 22:15:22.125574535 +0200
-+++ answers/087_async4.zig	2023-10-05 20:04:07.236103584 +0200
-@@ -16,7 +16,7 @@
- 
-     while (global_counter <= 5) {
-         print("{} ", .{global_counter});
--        ???
-+        resume foo_frame;
-     }
- 
-     print("\n", .{});
-@@ -24,7 +24,7 @@
- 
- fn foo() void {
-     while (true) {
--        ???
--        ???
-+        global_counter += 1;
-+        suspend {}
-     }
- }
diff --git a/patches/patches/088_async5.patch b/patches/patches/088_async5.patch
deleted file mode 100644
index b9d5a21..0000000
--- a/patches/patches/088_async5.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- exercises/088_async5.zig	2023-10-03 22:15:22.125574535 +0200
-+++ answers/088_async5.zig	2023-10-05 20:04:07.239436980 +0200
-@@ -36,7 +36,7 @@
- pub fn main() void {
-     var myframe = async getPageTitle("http://example.com");
- 
--    var value = ???
-+    var value = await myframe;
- 
-     print("{s}\n", .{value});
- }
diff --git a/patches/patches/089_async6.patch b/patches/patches/089_async6.patch
deleted file mode 100644
index 4a0687e..0000000
--- a/patches/patches/089_async6.patch
+++ /dev/null
@@ -1,13 +0,0 @@
---- exercises/089_async6.zig	2023-10-03 22:15:22.125574535 +0200
-+++ answers/089_async6.zig	2023-10-05 20:04:07.242770376 +0200
-@@ -41,8 +41,8 @@
-     var com_frame = async getPageTitle("http://example.com");
-     var org_frame = async getPageTitle("http://example.org");
- 
--    var com_title = com_frame;
--    var org_title = org_frame;
-+    var com_title = await com_frame;
-+    var org_title = await org_frame;
- 
-     print(".com: {s}, .org: {s}.\n", .{ com_title, org_title });
- }
diff --git a/patches/patches/090_async7.patch b/patches/patches/090_async7.patch
deleted file mode 100644
index 62ec057..0000000
--- a/patches/patches/090_async7.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- exercises/090_async7.zig	2023-10-03 22:15:22.125574535 +0200
-+++ answers/090_async7.zig	2023-10-05 20:04:07.249437167 +0200
-@@ -29,7 +29,7 @@
-     // The main() function can not be async. But we know
-     // getBeef() will not suspend with this particular
-     // invocation. Please make this okay:
--    var my_beef = getBeef(0);
-+    var my_beef = nosuspend getBeef(0);
- 
-     print("beef? {X}!\n", .{my_beef});
- }
diff --git a/patches/patches/091_async8.patch b/patches/patches/091_async8.patch
deleted file mode 100644
index ddd3fce..0000000
--- a/patches/patches/091_async8.patch
+++ /dev/null
@@ -1,26 +0,0 @@
---- exercises/091_async8.zig	2023-10-03 22:15:22.125574535 +0200
-+++ answers/091_async8.zig	2023-10-05 20:04:07.252770563 +0200
-@@ -17,7 +17,7 @@
- 
-     var frame = async suspendable();
- 
--    print("X", .{});
-+    print("D", .{});
- 
-     resume frame;
- 
-@@ -25,11 +25,11 @@
- }
- 
- fn suspendable() void {
--    print("X", .{});
-+    print("B", .{});
- 
-     suspend {
--        print("X", .{});
-+        print("C", .{});
-     }
- 
--    print("X", .{});
-+    print("E", .{});
- }