darwin_sdk_kit #

Resolve and install Darwin/iOS SDK artifact bundles (from Xcode.xip) and find a usable ld64.lld on Linux and Windows.

Used by xcross to build iOS apps without installing Xcode or macOS. The Xcode archive is SDK input only — do not redistribute extracted Apple SDK contents.

Install #

dart pub add darwin_sdk_kit

Usage #

import 'package:darwin_sdk_kit/darwin_sdk_kit.dart';

// Resolve the SDK installed under the xcross config dir, or null if missing.
final sdk = DarwinSdk.current();
if (sdk == null) {
  throw StateError('Run: xcross sdk install <Xcode.xip>');
}

final iphoneOsSdk = sdk.iPhoneOSSdk();
final linker = await DarwinSdk.resolveLd64Lld(sdk);

// Low-level: stream decoded CPIO entries from an Xcode.xip.
await for (final entry in XcodeXipExtractor.extract('/path/to/Xcode.xip')) {
  // Filter / write entries as needed…
}

Scope #

• DarwinSdk — locate a valid xcross-darwin.artifactbundle, pick an iPhoneOS SDK, resolve stock LLVM ld64.lld (skips swiftly proxy shims).
• XcodeXipExtractor — pure-Dart XAR → pbzx → CPIO decode of Xcode.xip.
• XarReader / PbzxReader / CpioReader — format primitives used by the extractor.

Default install location: ~/.config/xcross/swift-sdks/… (or %APPDATA%\xcross\swift-sdks\… on Windows).

Related #

Part of the xcross monorepo. Depends on cli_kit.