Fix toolchain resolution for osx x86_64
diff --git a/build_defs/BUILD.bazel b/build_defs/BUILD.bazel
index 0926b85..1f1b21b 100644
--- a/build_defs/BUILD.bazel
+++ b/build_defs/BUILD.bazel
@@ -91,7 +91,7 @@
 
 config_setting(
     name = "config_osx_x86_64",
-    values = {"cpu": "osx-aarch_64"},
+    values = {"cpu": "osx-x86_64"},
 )
 
 selects.config_setting_group(