1 files changed, 4 insertions, 0 deletions
diff --git a/build.zig b/build.zig
index 4c12865..c732d2d 100644
--- a/build.zig
+++ b/build.zig
@@ -52,6 +52,10 @@ pub fn build(b: *std.Build) void {
     versions_mod.addOption([]const u8, "lua_version", lua_version);
     versions_mod.addOption([]const u8, "lua_short_version", lua_short_version);
     versions_mod.addOption([]const u8, "luarocks_version", luarocks_version);
+    // Absolute repo root, for tests that need to locate source-tree
+    // assets (e.g. `agent/tools/*.lua`) regardless of the test
+    // runner's cwd.
+    versions_mod.addOption([]const u8, "repo_root", b.build_root.path orelse ".");
 
     // CLI executable
     const exe_mod = b.createModule(.{