From e61c5f775d5f03c03fb14478c162e0df528280da Mon Sep 17 00:00:00 2001
From: adrien <adrien@bouvais.lu>
Date: Thu, 21 May 2026 23:33:54 +0200
Subject: [PATCH] Prevent building example when use as module

---
 build.zig | 46 ++++++++++++++++++++++++----------------------
 1 file changed, 24 insertions(+), 22 deletions(-)

diff --git a/build.zig b/build.zig
index 4c0cf8d..b610f0d 100644
--- a/build.zig
+++ b/build.zig
@@ -29,31 +29,33 @@ pub fn build(b: *std.Build) !void {
         mod.linkSystemLibrary("gcc_s", .{});
     }
 
-    var threaded: std.Io.Threaded = .init_single_threaded;
-    const io = threaded.io();
+    if (b.pkg_hash.len == 0) {
+        var threaded: std.Io.Threaded = .init_single_threaded;
+        const io = threaded.io();
 
-    var buf: [1024]u8 = undefined;
-    const exemples = try std.Io.Dir.cwd().openDir(io, "examples", .{ .access_sub_paths = false, .iterate = true });
-    var iter = exemples.iterate();
-    while (try iter.next(io)) |entry| {
-        if (entry.kind != .file) continue;
-        if (!std.mem.eql(u8, entry.name[entry.name.len - 4 ..], ".zig")) continue;
+        var buf: [1024]u8 = undefined;
+        const exemples = try std.Io.Dir.cwd().openDir(io, "examples", .{ .access_sub_paths = false, .iterate = true });
+        var iter = exemples.iterate();
+        while (try iter.next(io)) |entry| {
+            if (entry.kind != .file) continue;
+            if (!std.mem.eql(u8, entry.name[entry.name.len - 4 ..], ".zig")) continue;
 
-        const exe = b.addExecutable(.{
-            .name = entry.name[0 .. entry.name.len - 4],
-            .root_module = b.createModule(.{
-                .root_source_file = b.path(try std.fmt.bufPrint(&buf, "examples/{s}", .{entry.name})),
-                .target = target,
-                .optimize = optimize,
-                .imports = &.{},
-            }),
-        });
-        exe.root_module.addImport("gpu", mod);
+            const exe = b.addExecutable(.{
+                .name = entry.name[0 .. entry.name.len - 4],
+                .root_module = b.createModule(.{
+                    .root_source_file = b.path(try std.fmt.bufPrint(&buf, "examples/{s}", .{entry.name})),
+                    .target = target,
+                    .optimize = optimize,
+                    .imports = &.{},
+                }),
+            });
+            exe.root_module.addImport("gpu", mod);
 
-        b.installArtifact(exe);
+            b.installArtifact(exe);
 
-        const run_step = b.step(entry.name[0 .. entry.name.len - 4], try std.fmt.bufPrint(&buf, "Run {s} demo", .{entry.name}));
-        const run_cmd = b.addRunArtifact(exe);
-        run_step.dependOn(&run_cmd.step);
+            const run_step = b.step(entry.name[0 .. entry.name.len - 4], try std.fmt.bufPrint(&buf, "Run {s} demo", .{entry.name}));
+            const run_cmd = b.addRunArtifact(exe);
+            run_step.dependOn(&run_cmd.step);
+        }
     }
 }