swift-syntax-bazel

This repo provides a bazel target for SwiftSyntax. Most importantly it handles vendoring lib_InternalSwiftSyntaxParser as a static library so your tool doesn't depend on a specific Xcode.app path or version.

Usage

1. Make sure you've setup rules_apple
2. Go to the releases page to grab the WORKSPACE snippet for the Xcode version you're using
3. Add this target to your deps:

    deps = [
        "@com_github_keith_swift_syntax//:SwiftSyntax",
    ]

Details

Previously if you built SwiftSyntax in your bazel build, the final binary would end up with a rpath like this:

/Applications/Xcode-12.4.0.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/macosx

This meant if you used a remote bazel cache in your builds, everyone's Xcode path would have to match for this to work correctly. This repo links a static binary for lib_InternalSwiftSyntaxParser instead.