Merge upstream with solutions

Reviewed-on: https://codeberg.org/ziglings/exercises/pulls/50

build.zig

@@ -15,7 +15,7 @@ const print = std.debug.print;
 //     1) Getting Started
 //     2) Version Changes
 comptime {
-    const required_zig = "0.12.0-dev.2043";
+    const required_zig = "0.12.0-dev.2618";
     const current_zig = builtin.zig_version;
     const min_zig = std.SemanticVersion.parse(required_zig) catch unreachable;
     if (current_zig.order(min_zig) == .lt) {
@@ -386,7 +386,7 @@ const ZiglingStep = struct {
         var zig_args = std.ArrayList([]const u8).init(b.allocator);
         defer zig_args.deinit();
 
-        zig_args.append(b.zig_exe) catch @panic("OOM");
+        zig_args.append(b.graph.zig_exe) catch @panic("OOM");
 
         const cmd = switch (self.exercise.kind) {
             .exe => "build-exe",

exercises/103_tokenization.zig

@@ -1,9 +1,9 @@
 //
 // The functionality of the standard library is becoming increasingly
-// important in Zig. On the one hand, it is helpful to look at how
+// important in Zig. First of all, it is helpful to take a look at how
 // the individual functions are implemented. Because this is wonderfully
-// suitable as a template for your own functions. On the other hand,
-// these standard functions are part of the basic equipment of Zig.
+// suitable as a template for your own functions. In addition these
+// standard functions are part of the basic configuration of Zig.
 //
 // This means that they are always available on every system.
 // Therefore it is worthwhile to deal with them also in Ziglings.

test/tests.zig

@@ -33,7 +33,7 @@ pub fn addCliTests(b: *std.Build, exercises: []const Exercise) *Step {
             const n = ex.number();
 
             const cmd = b.addSystemCommand(&.{
-                b.zig_exe,
+                b.graph.zig_exe,
                 "build",
                 "-Dhealed",
                 b.fmt("-Dhealed-path={s}", .{tmp_path}),
@@ -69,7 +69,7 @@ pub fn addCliTests(b: *std.Build, exercises: []const Exercise) *Step {
 
         // TODO: when an exercise is modified, the cache is not invalidated.
         const cmd = b.addSystemCommand(&.{
-            b.zig_exe,
+            b.graph.zig_exe,
             "build",
             "-Dhealed",
             b.fmt("-Dhealed-path={s}", .{tmp_path}),
@@ -99,7 +99,7 @@ pub fn addCliTests(b: *std.Build, exercises: []const Exercise) *Step {
                 const n = ex.number();
 
                 const cmd = b.addSystemCommand(&.{
-                    b.zig_exe,
+                    b.graph.zig_exe,
                     "build",
                     b.fmt("-Dn={}", .{n}),
                 });