Accept depset inputs in lipo.create (#683)

lib/lipo.bzl

diff --git a/lib/lipo.bzl b/lib/lipo.bzl
index 56a4b29..1c1fee8 100644
--- a/lib/lipo.bzl
+++ b/lib/lipo.bzl
@@ -47,6 +47,8 @@
         xcode_config: The `apple_common.XcodeVersionConfig` provider used to
             configure the action environment.
     """
+    if type(inputs) == "depset":
+        inputs = inputs.to_list()
     if not inputs:
         fail("lipo.create requires at least one input file.")
 

test/BUILD

diff --git a/test/BUILD b/test/BUILD
index 1d3a558..7439a6d 100644
--- a/test/BUILD
+++ b/test/BUILD
@@ -13,6 +13,7 @@
 load(":compiling_tests.bzl", "compiling_test_suite")
 load(":coverage_tests.bzl", "coverage_test_suite")
 load(":linking_tests.bzl", "linking_test_suite")
+load(":lipo_test.bzl", "create_from_depset_test")
 load(":sanitizer_tests.bzl", "sanitizer_test_suite")
 load(":starlark_apple_binary.bzl", "starlark_apple_binary")
 load(":toolchains_test.bzl", "toolchain_config_test_suite")
@@ -45,6 +46,8 @@
 
 xcode_support_test(name = "xcode_support_test")
 
+create_from_depset_test(name = "lipo_create_from_depset_test")
+
 xcode_version_at_least_test(name = "xcode_version_at_least_test")
 
 xcode_version_test(name = "xcode_version_test")
@@ -82,6 +85,7 @@
     srcs = glob(["*.bzl"]),
     deps = [
         "//lib:apple_support",
+        "//lib:lipo",
         "//lib:xcode_support",
         "//rules:apple_genrule",
         "//xcode:available_xcodes",

test/lipo_test.bzl

diff --git a/test/lipo_test.bzl b/test/lipo_test.bzl
new file mode 100644
index 0000000..78cfef5
--- /dev/null
+++ b/test/lipo_test.bzl
@@ -0,0 +1,46 @@
+# Copyright 2026 The Bazel Authors. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Tests for the lipo command construction helpers."""
+
+load("@bazel_skylib//lib:unittest.bzl", "asserts", "unittest")
+load("//lib:apple_support.bzl", "apple_support")
+load("//lib:lipo.bzl", "lipo")
+
+def _create_from_depset_test_impl(ctx):
+    env = unittest.begin(ctx)
+    inputs = [ctx.actions.declare_file("first binary"), ctx.actions.declare_file("second binary")]
+    output = ctx.actions.declare_file("universal binary")
+    for file in inputs + [output]:
+        ctx.actions.write(file, "")
+    calls = []
+    actions = struct(run_shell = lambda **kwargs: calls.append(kwargs))
+    for files in [inputs, depset(inputs)]:
+        lipo.create(
+            actions = actions,
+            inputs = files,
+            output = output,
+            apple_platform_info = struct(platform = apple_common.platform.macos),
+            xcode_config = ctx.attr._xcode_config[apple_common.XcodeVersionConfig],
+        )
+    asserts.equals(env, 2, len(calls))
+    asserts.equals(env, calls[0]["command"], calls[1]["command"])
+    asserts.equals(env, inputs, calls[1]["inputs"])
+    for file in inputs + [output]:
+        asserts.true(env, "'" + file.path + "'" in calls[1]["command"])
+    return unittest.end(env)
+
+create_from_depset_test = unittest.make(
+    _create_from_depset_test_impl,
+    attrs = apple_support.action_required_attrs(),
+)