diff --git a/WORKSPACE b/WORKSPACE
index 87a57de..c7c274b 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -54,3 +54,6 @@ load("@rules_proto//proto:repositories.bzl", "rules_proto_dependencies", "rules_
 rules_proto_dependencies()
 
 rules_proto_toolchains()
+
+load("//cc:repositories.bzl", "rules_cc_toolchains")
+rules_proto_toolchains()
diff --git a/cc/private/toolchain/unix_cc_configure.bzl b/cc/private/toolchain/unix_cc_configure.bzl
index 856486e..707104e 100644
--- a/cc/private/toolchain/unix_cc_configure.bzl
+++ b/cc/private/toolchain/unix_cc_configure.bzl
@@ -252,7 +252,7 @@ def _get_no_canonical_prefixes_opt(repository_ctx, cc):
         )
     return opt
 
-def _get_env(repository_ctx):
+def get_env(repository_ctx):
     """Convert the environment in a list of export if in Homebrew. Doesn't %-escape the result!
 
     Args:
diff --git a/cc/repositories.bzl b/cc/repositories.bzl
index bb41c86..4e1dd8f 100644
--- a/cc/repositories.bzl
+++ b/cc/repositories.bzl
@@ -9,6 +9,7 @@
 # Ideally we'd delete this entire file.
 
 load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+load("//cc/private/toolchain:cc_configure.bzl", "cc_configure")
 
 def rules_cc_dependencies():
     _maybe(
@@ -22,6 +23,9 @@ def rules_cc_dependencies():
         ],
     )
 
+def rules_cc_toolchains(*args):
+  cc_configure(*args)
+
 def _maybe(repo_rule, name, **kwargs):
     if not native.existing_rule(name):
         repo_rule(name = name, **kwargs)