# 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
@@ -321,7 +321,7 @@ def _generate_hub_and_spokes(
         kwargs = dict(
             hub_name = hub_name,
             gen_build_script = annotation.gen_build_script,
-            build_script_deps = [],
+            build_script_deps = annotation.build_script_deps,
             build_script_deps_select = _select(feature_resolutions.build_deps),
             build_script_data = annotation.build_script_data,
             build_script_data_select = annotation.build_script_data_select,
@@ -881,9 +881,9 @@ _annotation = tag_class(
         "build_script_data_select": _label_list_dict(
             doc = "Labels to add to a crate's `cargo_build_script::data` attribute, keyed by platform triplet.",
         ),
-        # "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": attr.string_dict(
             doc = "Additional environment variables to set on a crate's `cargo_build_script::env` attribute.",
         ),
diff --git a/rs/private/annotations.bzl b/rs/private/annotations.bzl
--- a/rs/private/annotations.bzl
+++ b/rs/private/annotations.bzl
@@ -2,6 +2,7 @@ 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 = {},
@@ -30,6 +31,7 @@ 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
@@ -298,6 +298,6 @@ rust_crate_attrs = {
     "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(),