From 141624e9c62a5edbafcfc1739dab5c4445a28c0f Mon Sep 17 00:00:00 2001
From: Brentley Jones <github@brentleyjones.com>
Date: Mon, 21 Sep 2026 09:46:57 -0500
Subject: [PATCH] Restore feature_configuration argument to
 derive_swift_module_name

---
 doc/api.md            | 3 ++-
 swift/module_name.bzl | 7 ++++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/doc/api.md b/doc/api.md
index 6aec44efa..29fd272f3 100755
--- a/doc/api.md
+++ b/doc/api.md
@@ -99,7 +99,7 @@ A provider whose type/layout is an implementation detail and should not
 ## derive_swift_module_name
 
 <pre>
-derive_swift_module_name(<a href="#derive_swift_module_name-args">*args</a>)
+derive_swift_module_name(<a href="#derive_swift_module_name-args">*args</a>, <a href="#derive_swift_module_name-feature_configuration">feature_configuration</a>)
 </pre>
 
 Returns a derived module name from the given build label.
@@ -125,6 +125,7 @@ This mapping is intended to be fairly predictable, but not reversible.
 
 | Name  | Description | Default Value |
 | :------------- | :------------- | :------------- |
+| <a id="derive_swift_module_name-feature_configuration"></a>feature_configuration |  Optional Swift feature configuration. Accepted for compatibility with existing callers; currently unused.   |  `None` |
 | <a id="derive_swift_module_name-args"></a>args |  Either a single argument of type `Label`, or two arguments of type `str` where the first argument is the package name and the second argument is the target name.   |  none |
 
 **RETURNS**
diff --git a/swift/module_name.bzl b/swift/module_name.bzl
index 4a7bdb7f7..575bb42ac 100644
--- a/swift/module_name.bzl
+++ b/swift/module_name.bzl
@@ -18,7 +18,10 @@ load("@bazel_skylib//lib:types.bzl", "types")
 
 visibility("public")
 
-def derive_swift_module_name(*args):
+def derive_swift_module_name(
+        *args,
+        # buildifier: disable=unused-variable
+        feature_configuration = None):
     """Returns a derived module name from the given build label.
 
     For targets whose module name is not explicitly specified, the module name
@@ -40,6 +43,8 @@ def derive_swift_module_name(*args):
         *args: Either a single argument of type `Label`, or two arguments of
             type `str` where the first argument is the package name and the
             second argument is the target name.
+        feature_configuration: Optional Swift feature configuration. Accepted
+            for compatibility with existing callers; currently unused.
 
     Returns:
         The module name derived from the label.