1 files changed, 9 insertions, 0 deletions
diff --git a/build.zig b/build.zig
index 8a07cf16..c150c9b5 100644
--- a/build.zig
+++ b/build.zig
@@ -885,6 +885,15 @@ pub fn build(b: *std.Build) void {
             .link_libc = true,
         }) });
         unit_step.dependOn(&b.addRunArtifact(shell_bin_test).step);
+        // Nested-instance detection and its socket path: same shape again —
+        // native-shell IO, no core imports, its own libc-linked module.
+        const nested_test = b.addTest(.{ .root_module = b.createModule(.{
+            .target = target,
+            .optimize = optimize,
+            .root_source_file = b.path("src/nested.zig"),
+            .link_libc = true,
+        }) });
+        unit_step.dependOn(&b.addRunArtifact(nested_test).step);
         // crt.zig is pure std — the mouse-mapping-vs-shader-formula test
         const crt_test = b.addTest(.{ .root_module = b.createModule(.{
             .target = target,