fix: follow symlinks when searching for xcframework directories (#983)

One of the packages we depend on puts its XCFramework behind a symlink
for some reason. Without this change rspm doesn't follow the symlink to
find the contents of the actual framework.

mimic behavior of
[_list_files_under](https://github.com/cgrindel/rules_swift_package_manager/blob/85a704df7fb25d861ba8e54a584c08e07a7de748/swiftpkg/internal/repository_files.bzl#L44-L45)

Author: jflan-dd

.bazelrc

@@ -1,7 +1,7 @@
 # To update these lines, execute 
 # `bazel run @rules_bazel_integration_test//tools:update_deleted_packages`
-build --deleted_packages=bzlmod/workspace,bzlmod/workspace/Sources/MyExecutable,bzlmod/workspace/Sources/MyLibrary,bzlmod/workspace/Sources/System,bzlmod/workspace/Tests/MyLibraryTests,examples/firebase_example,examples/firebase_example/abtesting,examples/firebase_example/abtesting/SharedApp,examples/firebase_example/analytics/AnalyticsExample,examples/firebase_example/appdistribution,examples/firebase_example/appdistribution/AppDistributionExample,examples/firebase_example/appdistribution/AppDistributionTests,examples/firebase_example/crashlytics,examples/grpc_example,examples/grpc_example/aaa_test,examples/grpc_example/protos,examples/grpc_example/protos/echo_service,examples/grpc_example/protos/echo_service/requests,examples/grpc_example/protos/echo_service/responses,examples/grpc_example/sources,examples/grpc_example/sources/client,examples/grpc_example/sources/server,examples/grpc_example/sources/test,examples/grpc_package_example,examples/grpc_package_example/aaa_test,examples/grpc_package_example/protos,examples/grpc_package_example/protos/echo_service,examples/grpc_package_example/sources,examples/grpc_package_example/sources/client,examples/grpc_package_example/sources/server,examples/grpc_package_example/sources/test,examples/http_archive_ext_deps,examples/http_archive_ext_deps/Sources/MyDequeModule,examples/http_archive_ext_deps/Sources/PrintStuff,examples/http_archive_ext_deps/Tests/MyDequeModuleTests,examples/http_archive_ext_deps/third_party,examples/interesting_deps,examples/ios_sim,examples/ios_sim/Sources/Foo,examples/ios_sim/Tests/FooTests,examples/ios_sim/third-party/swift-cmark,examples/lottie_ios_example,examples/lottie_ios_example/LottieExample,examples/lottie_ios_example/LottieExampleUITest,examples/messagekit_example,examples/messagekit_example/Sources,examples/messagekit_example/UITests,examples/nimble_example,examples/nimble_example/Sources/NimbleExample,examples/objc_code,examples/phone_number_kit,examples/phone_number_kit/Tests/PhoneNumberKitTests,examples/pkg_manifest_minimal,examples/pkg_manifest_minimal/Sources/MyExecutable,examples/pkg_manifest_minimal/Sources/MyLibrary,examples/pkg_manifest_minimal/Tests/MyLibraryTests,examples/pkg_manifest_minimal/third_party,examples/resources_example,examples/resources_example/Sources/MyApp,examples/resources_example/Tests/MyAppTests,examples/resources_example/Tests/MyAppUITests,examples/resources_example/third_party,examples/shake_ios_example,examples/shake_ios_example/ShakeIOSExample,examples/shake_ios_example/ShakeIOSExampleUITests,examples/snapkit_example,examples/soto_example,examples/soto_example/Tests/SotoTests,examples/stripe_example,examples/stripe_example/PaymentSheet/PaymentSheetExample,examples/stripe_example/PaymentSheet/PaymentSheetUITest,examples/tca_example,examples/tca_example/Sources,examples/tca_example/Tests,examples/vapor_example,examples/vapor_example/Sources/App,examples/vapor_example/Sources/Run,examples/vapor_example/Tests/AppTests,examples/vapor_example/swift,examples/xcmetrics_example
-query --deleted_packages=bzlmod/workspace,bzlmod/workspace/Sources/MyExecutable,bzlmod/workspace/Sources/MyLibrary,bzlmod/workspace/Sources/System,bzlmod/workspace/Tests/MyLibraryTests,examples/firebase_example,examples/firebase_example/abtesting,examples/firebase_example/abtesting/SharedApp,examples/firebase_example/analytics/AnalyticsExample,examples/firebase_example/appdistribution,examples/firebase_example/appdistribution/AppDistributionExample,examples/firebase_example/appdistribution/AppDistributionTests,examples/firebase_example/crashlytics,examples/grpc_example,examples/grpc_example/aaa_test,examples/grpc_example/protos,examples/grpc_example/protos/echo_service,examples/grpc_example/protos/echo_service/requests,examples/grpc_example/protos/echo_service/responses,examples/grpc_example/sources,examples/grpc_example/sources/client,examples/grpc_example/sources/server,examples/grpc_example/sources/test,examples/grpc_package_example,examples/grpc_package_example/aaa_test,examples/grpc_package_example/protos,examples/grpc_package_example/protos/echo_service,examples/grpc_package_example/sources,examples/grpc_package_example/sources/client,examples/grpc_package_example/sources/server,examples/grpc_package_example/sources/test,examples/http_archive_ext_deps,examples/http_archive_ext_deps/Sources/MyDequeModule,examples/http_archive_ext_deps/Sources/PrintStuff,examples/http_archive_ext_deps/Tests/MyDequeModuleTests,examples/http_archive_ext_deps/third_party,examples/interesting_deps,examples/ios_sim,examples/ios_sim/Sources/Foo,examples/ios_sim/Tests/FooTests,examples/ios_sim/third-party/swift-cmark,examples/lottie_ios_example,examples/lottie_ios_example/LottieExample,examples/lottie_ios_example/LottieExampleUITest,examples/messagekit_example,examples/messagekit_example/Sources,examples/messagekit_example/UITests,examples/nimble_example,examples/nimble_example/Sources/NimbleExample,examples/objc_code,examples/phone_number_kit,examples/phone_number_kit/Tests/PhoneNumberKitTests,examples/pkg_manifest_minimal,examples/pkg_manifest_minimal/Sources/MyExecutable,examples/pkg_manifest_minimal/Sources/MyLibrary,examples/pkg_manifest_minimal/Tests/MyLibraryTests,examples/pkg_manifest_minimal/third_party,examples/resources_example,examples/resources_example/Sources/MyApp,examples/resources_example/Tests/MyAppTests,examples/resources_example/Tests/MyAppUITests,examples/resources_example/third_party,examples/shake_ios_example,examples/shake_ios_example/ShakeIOSExample,examples/shake_ios_example/ShakeIOSExampleUITests,examples/snapkit_example,examples/soto_example,examples/soto_example/Tests/SotoTests,examples/stripe_example,examples/stripe_example/PaymentSheet/PaymentSheetExample,examples/stripe_example/PaymentSheet/PaymentSheetUITest,examples/tca_example,examples/tca_example/Sources,examples/tca_example/Tests,examples/vapor_example,examples/vapor_example/Sources/App,examples/vapor_example/Sources/Run,examples/vapor_example/Tests/AppTests,examples/vapor_example/swift,examples/xcmetrics_example
+build --deleted_packages=bzlmod/workspace,bzlmod/workspace/Sources/MyExecutable,bzlmod/workspace/Sources/MyLibrary,bzlmod/workspace/Sources/System,bzlmod/workspace/Tests/MyLibraryTests,examples/firebase_example,examples/firebase_example/abtesting,examples/firebase_example/abtesting/SharedApp,examples/firebase_example/analytics/AnalyticsExample,examples/firebase_example/appdistribution,examples/firebase_example/appdistribution/AppDistributionExample,examples/firebase_example/appdistribution/AppDistributionTests,examples/firebase_example/crashlytics,examples/grpc_example,examples/grpc_example/aaa_test,examples/grpc_example/protos,examples/grpc_example/protos/echo_service,examples/grpc_example/protos/echo_service/requests,examples/grpc_example/protos/echo_service/responses,examples/grpc_example/sources,examples/grpc_example/sources/client,examples/grpc_example/sources/server,examples/grpc_example/sources/test,examples/grpc_package_example,examples/grpc_package_example/aaa_test,examples/grpc_package_example/protos,examples/grpc_package_example/protos/echo_service,examples/grpc_package_example/sources,examples/grpc_package_example/sources/client,examples/grpc_package_example/sources/server,examples/grpc_package_example/sources/test,examples/http_archive_ext_deps,examples/http_archive_ext_deps/Sources/MyDequeModule,examples/http_archive_ext_deps/Sources/PrintStuff,examples/http_archive_ext_deps/Tests/MyDequeModuleTests,examples/http_archive_ext_deps/third_party,examples/interesting_deps,examples/ios_sim,examples/ios_sim/Sources/Foo,examples/ios_sim/Tests/FooTests,examples/ios_sim/third-party/swift-cmark,examples/lottie_ios_example,examples/lottie_ios_example/LottieExample,examples/lottie_ios_example/LottieExampleUITest,examples/messagekit_example,examples/messagekit_example/Sources,examples/messagekit_example/UITests,examples/nimble_example,examples/nimble_example/Sources/NimbleExample,examples/objc_code,examples/phone_number_kit,examples/phone_number_kit/Tests/PhoneNumberKitTests,examples/pkg_manifest_minimal,examples/pkg_manifest_minimal/Sources/MyExecutable,examples/pkg_manifest_minimal/Sources/MyLibrary,examples/pkg_manifest_minimal/Tests/MyLibraryTests,examples/pkg_manifest_minimal/third_party,examples/resources_example,examples/resources_example/Sources/MyApp,examples/resources_example/Tests/MyAppTests,examples/resources_example/Tests/MyAppUITests,examples/resources_example/third_party,examples/shake_ios_example,examples/shake_ios_example/ShakeIOSExample,examples/shake_ios_example/ShakeIOSExampleUITests,examples/snapkit_example,examples/soto_example,examples/soto_example/Tests/SotoTests,examples/stripe_example,examples/stripe_example/PaymentSheet/PaymentSheetExample,examples/stripe_example/PaymentSheet/PaymentSheetUITest,examples/symlink_example,examples/symlink_example/Sources/ImportFramework,examples/symlink_example/Tests/ImportFrameworkTests,examples/tca_example,examples/tca_example/Sources,examples/tca_example/Tests,examples/vapor_example,examples/vapor_example/Sources/App,examples/vapor_example/Sources/Run,examples/vapor_example/Tests/AppTests,examples/vapor_example/swift,examples/xcmetrics_example
+query --deleted_packages=bzlmod/workspace,bzlmod/workspace/Sources/MyExecutable,bzlmod/workspace/Sources/MyLibrary,bzlmod/workspace/Sources/System,bzlmod/workspace/Tests/MyLibraryTests,examples/firebase_example,examples/firebase_example/abtesting,examples/firebase_example/abtesting/SharedApp,examples/firebase_example/analytics/AnalyticsExample,examples/firebase_example/appdistribution,examples/firebase_example/appdistribution/AppDistributionExample,examples/firebase_example/appdistribution/AppDistributionTests,examples/firebase_example/crashlytics,examples/grpc_example,examples/grpc_example/aaa_test,examples/grpc_example/protos,examples/grpc_example/protos/echo_service,examples/grpc_example/protos/echo_service/requests,examples/grpc_example/protos/echo_service/responses,examples/grpc_example/sources,examples/grpc_example/sources/client,examples/grpc_example/sources/server,examples/grpc_example/sources/test,examples/grpc_package_example,examples/grpc_package_example/aaa_test,examples/grpc_package_example/protos,examples/grpc_package_example/protos/echo_service,examples/grpc_package_example/sources,examples/grpc_package_example/sources/client,examples/grpc_package_example/sources/server,examples/grpc_package_example/sources/test,examples/http_archive_ext_deps,examples/http_archive_ext_deps/Sources/MyDequeModule,examples/http_archive_ext_deps/Sources/PrintStuff,examples/http_archive_ext_deps/Tests/MyDequeModuleTests,examples/http_archive_ext_deps/third_party,examples/interesting_deps,examples/ios_sim,examples/ios_sim/Sources/Foo,examples/ios_sim/Tests/FooTests,examples/ios_sim/third-party/swift-cmark,examples/lottie_ios_example,examples/lottie_ios_example/LottieExample,examples/lottie_ios_example/LottieExampleUITest,examples/messagekit_example,examples/messagekit_example/Sources,examples/messagekit_example/UITests,examples/nimble_example,examples/nimble_example/Sources/NimbleExample,examples/objc_code,examples/phone_number_kit,examples/phone_number_kit/Tests/PhoneNumberKitTests,examples/pkg_manifest_minimal,examples/pkg_manifest_minimal/Sources/MyExecutable,examples/pkg_manifest_minimal/Sources/MyLibrary,examples/pkg_manifest_minimal/Tests/MyLibraryTests,examples/pkg_manifest_minimal/third_party,examples/resources_example,examples/resources_example/Sources/MyApp,examples/resources_example/Tests/MyAppTests,examples/resources_example/Tests/MyAppUITests,examples/resources_example/third_party,examples/shake_ios_example,examples/shake_ios_example/ShakeIOSExample,examples/shake_ios_example/ShakeIOSExampleUITests,examples/snapkit_example,examples/soto_example,examples/soto_example/Tests/SotoTests,examples/stripe_example,examples/stripe_example/PaymentSheet/PaymentSheetExample,examples/stripe_example/PaymentSheet/PaymentSheetUITest,examples/symlink_example,examples/symlink_example/Sources/ImportFramework,examples/symlink_example/Tests/ImportFrameworkTests,examples/tca_example,examples/tca_example/Sources,examples/tca_example/Tests,examples/vapor_example,examples/vapor_example/Sources/App,examples/vapor_example/Sources/Run,examples/vapor_example/Tests/AppTests,examples/vapor_example/swift,examples/xcmetrics_example
 
 # Import Shared settings
 import %workspace%/shared.bazelrc

.github/workflows/ci.yml

@@ -75,6 +75,8 @@ jobs:
             runner: macos-13
           - test: '@@//examples:stripe_example_test_bazel_.bazelversion'
             runner: macos-13
+          - test: '@@//examples:symlink_example_test_bazel_.bazelversion'
+            runner: macos-13
           - test: '@@//examples:tca_example_test_bazel_.bazelversion'
             runner: macos-13
           - test: '@@//examples:vapor_example_legacy_test_bazel_.bazelversion'

examples/example_infos.bzl

@@ -154,6 +154,7 @@ _macos_single_bazel_version_test_examples = [
     "stripe_example",
     "xcmetrics_example",
     "tca_example",
+    "symlink_example",
 ]
 
 _linux_single_bazel_version_test_examples = []

examples/symlink_example/.bazelrc

@@ -0,0 +1,8 @@
+# Import Shared settings
+import %workspace%/../../shared.bazelrc
+
+# Import CI settings.
+import %workspace%/../../ci.bazelrc
+
+# Try to import a local.rc file; typically, written by CI
+try-import %workspace%/../../local.bazelrc

examples/symlink_example/BUILD.bazel

@@ -0,0 +1,37 @@
+load("@bazel_gazelle//:def.bzl", "gazelle", "gazelle_binary")
+load("@cgrindel_bazel_starlib//bzltidy:defs.bzl", "tidy")
+load("@rules_swift_package_manager//swiftpkg:defs.bzl", "swift_update_packages")
+
+tidy(
+    name = "tidy",
+    targets = [
+        ":swift_update_pkgs",
+        ":update_build_files",
+    ],
+)
+
+# MARK: - Gazelle
+
+# Ignore the Swift build folder
+# gazelle:exclude .build
+
+gazelle_binary(
+    name = "gazelle_bin",
+    languages = [
+        "@bazel_skylib_gazelle_plugin//bzl",
+        "@rules_swift_package_manager//gazelle",
+    ],
+)
+
+gazelle(
+    name = "update_build_files",
+    gazelle = ":gazelle_bin",
+)
+
+swift_update_packages(
+    name = "swift_update_pkgs",
+    gazelle = ":gazelle_bin",
+    generate_swift_deps_for_workspace = False,
+    package_manifest = "Package.swift",
+    update_bzlmod_stanzas = True,
+)

examples/symlink_example/MODULE.bazel

@@ -0,0 +1,54 @@
+bazel_dep(
+    name = "rules_swift_package_manager",
+    version = "0.0.0",
+)
+local_path_override(
+    module_name = "rules_swift_package_manager",
+    path = "../..",
+)
+
+bazel_dep(name = "cgrindel_bazel_starlib", version = "0.20.2")
+bazel_dep(name = "bazel_skylib", version = "1.5.0")
+bazel_dep(name = "apple_support", version = "1.15.1")
+bazel_dep(
+    name = "rules_swift",
+    version = "1.17.0",
+    repo_name = "build_bazel_rules_swift",
+)
+bazel_dep(
+    name = "rules_apple",
+    version = "3.4.0",
+    repo_name = "build_bazel_rules_apple",
+)
+
+bazel_dep(
+    name = "bazel_skylib_gazelle_plugin",
+    version = "1.5.0",
+    dev_dependency = True,
+)
+bazel_dep(
+    name = "gazelle",
+    version = "0.36.0",
+    dev_dependency = True,
+    repo_name = "bazel_gazelle",
+)
+
+apple_cc_configure = use_extension(
+    "@apple_support//crosstool:setup.bzl",
+    "apple_cc_configure_extension",
+)
+use_repo(apple_cc_configure, "local_config_apple_cc")
+
+# swift_deps START
+swift_deps = use_extension(
+    "@rules_swift_package_manager//:extensions.bzl",
+    "swift_deps",
+)
+swift_deps.from_file(
+    deps_index = "//:swift_deps_index.json",
+)
+use_repo(
+    swift_deps,
+    "swiftpkg_empty_framework",
+)
+# swift_deps END

examples/symlink_example/Package.swift

@@ -0,0 +1,10 @@
+// swift-tools-version: 5.7
+
+import PackageDescription
+
+let package = Package(
+    name: "symlink_example",
+    dependencies: [
+        .package(path: "third_party/empty_framework"),
+    ]
+)

examples/symlink_example/README.md

@@ -0,0 +1,4 @@
+# Symlink to XCFramework
+
+This example demonstrates using an external package that contains an XCFramework that is
+dependended on through a symlink.

examples/symlink_example/Sources/ImportFramework/BUILD.bazel

@@ -0,0 +1,9 @@
+load("@build_bazel_rules_swift//swift:swift.bzl", "swift_library")
+
+swift_library(
+    name = "ImportFramework",
+    srcs = ["Import.swift"],
+    module_name = "ImportFramework",
+    visibility = ["//visibility:public"],
+    deps = ["@swiftpkg_empty_framework//:EmptyFramework"],
+)

examples/symlink_example/Sources/ImportFramework/Import.swift

@@ -0,0 +1,3 @@
+import EmptyFramework
+
+func getFrameworkVersion() -> Double { EmptyFrameworkVersionNumber }