# What: restore explicit build-script dependency annotations used by Codex.
# Scope: rules_rs crate-universe annotation plumbing only.

diff --git a/rs/extensions.bzl b/rs/extensions.bzl
--- a/rs/extensions.bzl
+++ b/rs/extensions.bzl
@@ -324,7 +324,7 @@ crate.annotation(
             hub_name = hub_name,
             crate_visibility = package["visibility"],
             gen_build_script = annotation.gen_build_script,
-            build_script_deps = [],
+            build_script_deps = annotation.build_script_deps,
             build_script_deps_select = feature_resolutions.build_deps,
             build_script_data = annotation.build_script_data,
             build_script_data_select = annotation.build_script_data_select,
@@ -996,9 +996,9 @@ _annotation = tag_class(
         # "build_script_data_glob": attr.string_list(
         #     doc = "A list of glob patterns to add to a crate's `cargo_build_script::data` attribute",
         # ),
-        # "build_script_deps": attr.label_list(
-        #     doc = "A list of labels to add to a crate's `cargo_build_script::deps` attribute.",
-        # ),
+        "build_script_deps": attr.string_list(
+            doc = "A list of labels to add to a crate's `cargo_build_script::deps` attribute.",
+        ),
         "build_script_env_files": attr.label_list(
             doc = "Files containing additional environment variables for a crate's `cargo_build_script`.",
             allow_files = True,
diff --git a/rs/private/annotations.bzl b/rs/private/annotations.bzl
--- a/rs/private/annotations.bzl
+++ b/rs/private/annotations.bzl
@@ -4,6 +4,7 @@ def _crate_annotation(
         additive_build_file = None,
         additive_build_file_content = "",
         gen_build_script = "auto",
+        build_script_deps = [],
         build_script_data = [],
         build_script_data_select = {},
         build_script_env = {},
@@ -40,6 +41,7 @@ def _crate_annotation(
         additive_build_file = additive_build_file,
         additive_build_file_content = additive_build_file_content,
         gen_build_script = gen_build_script,
+        build_script_deps = build_script_deps,
         build_script_data = build_script_data,
         build_script_data_select = build_script_data_select,
         build_script_env = build_script_env,
diff --git a/rs/private/repository_utils.bzl b/rs/private/repository_utils.bzl
--- a/rs/private/repository_utils.bzl
+++ b/rs/private/repository_utils.bzl
@@ -330,7 +330,7 @@ rust_crate_attrs = {
     "crate_visibility": attr.label_list(default = ["//visibility:public"]),
     "hub_name": attr.string(),
     "gen_build_script": attr.string(),
-    "build_script_deps": attr.label_list(),
+    "build_script_deps": attr.string_list(),
     "build_script_deps_select": _label_list_dict(),
     "build_script_data": attr.label_list(),
     "build_script_data_select": _label_list_dict(),