Swift: add resource dir updater

swift/third_party/BUILD.swift-toolchain-linux.bazel

@@ -1,4 +1,5 @@
-load("@rules_pkg//pkg:mappings.bzl", "pkg_filegroup", "pkg_files")
+load("@rules_pkg//pkg:mappings.bzl", "pkg_files")
+load("@rules_pkg//pkg:pkg.bzl", "pkg_zip")
 
 _strip_prefix = "usr/lib/swift"
 
@@ -42,8 +43,13 @@ _pm_interface_files = [
     for dir, interface, module in _pm_interface_files
 ]
 
-pkg_filegroup(
-    name = "resource-dir",
+pkg_zip(
+    name = "resource-dir-linux",
     srcs = [":resource-dir-original"] + [":pkg-%s" % module for _, _, module in _pm_interface_files],
+)
+
+alias(
+    name = "swift_toolchain_linux",
+    actual = ":resource-dir-linux",
     visibility = ["//visibility:public"],
 )

swift/third_party/BUILD.swift-toolchain-macos.bazel

@@ -1,12 +1,23 @@
 load("@rules_pkg//pkg:mappings.bzl", "pkg_files")
+load("@rules_pkg//pkg:pkg.bzl", "pkg_zip")
 
 _strip_prefix = "usr/lib/swift"
 
 pkg_files(
-    name = "resource-dir",
+    name = "resource-dir-files",
     srcs = glob(
         ["usr/lib/swift/**/*"],
     ),
     strip_prefix = _strip_prefix,
+)
+
+pkg_zip(
+    name = "resource-dir-macos",
+    srcs = [":resource-dir-files"],
+)
+
+alias(
+    name = "swift_toolchain_macos",
+    actual = ":resource-dir-macos",
     visibility = ["//visibility:public"],
 )

swift/third_party/resource-dir/BUILD.bazel

@@ -1,9 +1,30 @@
-load("//misc/bazel:pkg.bzl", "codeql_pkg_zip")
+load("//misc/bazel:pkg.bzl", "codeql_pkg_zip_import")
 
-codeql_pkg_zip(
+codeql_pkg_zip_import(
     name = "resource-dir",
     src = select({"@platforms//os:" + os: "@swift-resource-dir-" + os for os in ("linux", "macos")}),
     arch_specific = True,
-    target_compatible_with = select({"@platforms//os:windows": ["@platforms//:incompatible"]}),
+    target_compatible_with = select({
+        "@platforms//os:windows": ["@platforms//:incompatible"],
+        "//conditions:default": [],
+    }),
     visibility = ["//swift:__pkg__"],
 )
+
+[
+    sh_binary(
+        name = "update-" + os,
+        srcs = ["update.sh"],
+        args = [
+            "$(rlocationpath @swift_toolchain_%s)" % os,
+            "$(rlocationpath resource-dir-%s.zip)" % os,
+        ],
+        data = [
+            "resource-dir-%s.zip" % os,
+            "@swift_toolchain_" + os,
+        ],
+        target_compatible_with = ["@platforms//os:" + os],
+        deps = ["@bazel_tools//tools/bash/runfiles"],
+    )
+    for os in ("linux", "macos")
+]

swift/third_party/resource-dir/update.sh

@@ -0,0 +1,12 @@
+# --- begin runfiles.bash initialization v3 ---
+# Copy-pasted from the Bazel Bash runfiles library v3.
+set -uo pipefail; set +e; f=bazel_tools/tools/bash/runfiles/runfiles.bash
+source "${RUNFILES_DIR:-/dev/null}/$f" 2>/dev/null || \
+  source "$(grep -sm1 "^$f " "${RUNFILES_MANIFEST_FILE:-/dev/null}" | cut -f2- -d' ')" 2>/dev/null || \
+  source "$0.runfiles/$f" 2>/dev/null || \
+  source "$(grep -sm1 "^$f " "$0.runfiles_manifest" | cut -f2- -d' ')" 2>/dev/null || \
+  source "$(grep -sm1 "^$f " "$0.exe.runfiles_manifest" | cut -f2- -d' ')" 2>/dev/null || \
+  { echo>&2 "ERROR: cannot find $f"; exit 1; }; f=; set -e
+# --- end runfiles.bash initialization v3 ---
+
+cp "$(rlocation "$1")" "$(rlocation "$2")"