From 6569aeb9ca9735aed3a008a9f28703a8caa64cad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mikl=C3=B3s=20Fazekas?= <mfazekas@szemafor.com>
Date: Mon, 19 Oct 2026 06:10:55 +0200
Subject: [PATCH] fix(iOS): use the module name when rewriting module map paths
 of spm_dependency pods

---
 .../scripts/cocoapods/__tests__/spm-test.rb   | 40 +++++++++++++++++--
 .../react-native/scripts/cocoapods/spm.rb     | 18 +++++----
 2 files changed, 47 insertions(+), 11 deletions(-)

diff --git a/packages/react-native/scripts/cocoapods/__tests__/spm-test.rb b/packages/react-native/scripts/cocoapods/__tests__/spm-test.rb
index d3a546def0d7..4e43b5d6b3af 100644
--- a/packages/react-native/scripts/cocoapods/__tests__/spm-test.rb
+++ b/packages/react-native/scripts/cocoapods/__tests__/spm-test.rb
@@ -18,10 +18,14 @@ def initialize(pods_project, aggregate_targets = [])
       super
     end
   end
-  PodTargetStub = Struct.new(:name)
-  AggregateTargetStub = Struct.new(:name, :pod_targets, :embed_frameworks_script_path) do
-    def xcconfigs
-      {}
+  PodTargetStub = Struct.new(:name, :product_module_name)
+  AggregateTargetStub = Struct.new(:name, :pod_targets, :embed_frameworks_script_path, :xcconfigs) do
+    def initialize(name, pod_targets, embed_frameworks_script_path, xcconfigs = {})
+      super
+    end
+
+    def xcconfig_path(config_name)
+      Pathname(TMP_DIR) + "#{name}.#{config_name.downcase}.xcconfig"
     end
   end
 
@@ -202,4 +206,32 @@ def test_signature_cleanup_is_added_only_to_pods_not_built_into_the_shared_produ
     assert_empty(phase_names.call(POD_NAME))
     assert_loadable_project(project.path)
   end
+
+  def test_module_map_references_use_the_module_name_of_pods_built_into_the_shared_products_dir
+    project = build_project(0)
+    project.new_target(:static_library, "rnmapbox-maps", :ios)
+    project.save
+    manager = SPMManager.new
+    [POD_NAME, "rnmapbox-maps"].each do |pod_name|
+      manager.dependency(
+        PodSpecStub.new(pod_name),
+        url: "https://github.com/rive-app/rive-ios.git",
+        requirement: { kind: "exactVersion", version: "6.26.0" },
+        products: ["RiveRuntime"]
+      )
+    end
+    flags = '$(inherited) -fmodule-map-file="${PODS_CONFIGURATION_BUILD_DIR}/%s" -fmodule-map-file="${PODS_CONFIGURATION_BUILD_DIR}/%s"'
+    config = Xcodeproj::Config.new(
+      "OTHER_CFLAGS" => flags % ["#{POD_NAME}/#{POD_NAME}.modulemap", "rnmapbox-maps/rnmapbox_maps.modulemap"],
+      "OTHER_SWIFT_FLAGS" => flags % ["#{POD_NAME}/#{POD_NAME}.modulemap", "rnmapbox-maps/rnmapbox_maps.modulemap"]
+    )
+    pod_targets = [PodTargetStub.new(POD_NAME, POD_NAME), PodTargetStub.new("rnmapbox-maps", "rnmapbox_maps")]
+    aggregate_target = AggregateTargetStub.new("Pods-App", pod_targets, File.join(TMP_DIR, "none.sh"), { "Debug" => config })
+
+    manager.apply_on_post_install(InstallerStub.new(project, [aggregate_target]))
+
+    expected = flags % ["#{POD_NAME}.modulemap", "rnmapbox_maps.modulemap"]
+    assert_equal(expected, config.attributes["OTHER_CFLAGS"])
+    assert_equal(expected, config.attributes["OTHER_SWIFT_FLAGS"])
+  end
 end
diff --git a/packages/react-native/scripts/cocoapods/spm.rb b/packages/react-native/scripts/cocoapods/spm.rb
index 63b3ce92f3a9..f08db53bd0e8 100644
--- a/packages/react-native/scripts/cocoapods/spm.rb
+++ b/packages/react-native/scripts/cocoapods/spm.rb
@@ -142,21 +142,25 @@ def add_signature_cleanup(project, pod_names)
   end
 
   # Flattening a pod's build dir moves its generated modulemap from
-  # "<Pod>/<Pod>.modulemap" to "<Pod>.modulemap"; the aggregate xcconfigs
-  # reference the old path via -fmodule-map-file. Must mutate the in-memory
-  # Config attributes — later post_install steps (NewArchitectureHelper) re-save
-  # the same Config objects and would clobber a plain file edit.
+  # "<Pod>/<Module>.modulemap" to "<Module>.modulemap"; the aggregate xcconfigs
+  # reference the old path via -fmodule-map-file. The module name differs from
+  # the pod name when the pod name isn't a C identifier (e.g. "rnmapbox-maps").
+  # Must mutate the in-memory Config attributes — later post_install steps
+  # (NewArchitectureHelper) re-save the same Config objects and would clobber a
+  # plain file edit.
   def rewrite_aggregate_modulemap_references(installer, pod_names)
     installer.aggregate_targets.each do |aggregate_target|
+      pod_targets = aggregate_target.pod_targets.select { |pod_target| pod_names.include?(pod_target.name) }
       aggregate_target.xcconfigs.each do |config_name, config_file|
         %w[OTHER_CFLAGS OTHER_SWIFT_FLAGS].each do |key|
           value = config_file.attributes[key]
           next unless value
 
-          updated_value = pod_names.reduce(value) do |acc, pod_name|
+          updated_value = pod_targets.reduce(value) do |acc, pod_target|
+            module_name = pod_target.product_module_name
             acc.gsub(
-              "${PODS_CONFIGURATION_BUILD_DIR}/#{pod_name}/#{pod_name}.modulemap",
-              "${PODS_CONFIGURATION_BUILD_DIR}/#{pod_name}.modulemap"
+              "${PODS_CONFIGURATION_BUILD_DIR}/#{pod_target.name}/#{module_name}.modulemap",
+              "${PODS_CONFIGURATION_BUILD_DIR}/#{module_name}.modulemap"
             )
           end
           config_file.attributes[key] = updated_value if updated_value != value