[dajiaohuang]

Problem

With Swift 6.0.3 on Ubuntu 24.04, swift build at main (529bfcb) fails while loading Package.swift:

Package.swift:18:1: error: unexpected ',' separator

After removing that argument-list trailing comma, swift test reaches the same syntax error in testRethrows. Trailing commas in function calls require Swift 6.1+, while the package currently declares Swift tools 5.0. This prevents consumers with an older toolchain from building the package, before any library code is compiled.

Change

Remove the two argument-list trailing commas in the package manifest and existing test. Array/dictionary trailing commas are unchanged. No API, deployment target, tools-version or runtime behavior changes. The Tuist configuration and its current toolchain requirements are untouched.

Validation

Using Swift 6.0.3, with isolated HOME/config/cache/temp directories:

• Before: manifest fails; fixing only the manifest exposes the test's matching parser failure.
• After: swift build and all 7 existing swift test tests pass.
• A small external consumer passed value-copy with, reference identity/mutation then/with, do, collection conformances, NSObject/OperationQueue, JSONEncoder/JSONDecoder round-trip, and throwing closures through all three public methods.
• git diff --check passes.

Apple-platform Tuist/Xcode simulator checks were not run on this Windows/WSL host. Swift 5.x itself was not tested; the observed failure and repair are on 6.0.3. The existing README installation corrections in #95/#97 and actor-isolation work in #107 are separate and are not duplicated here.

[typeey]

Reviewed both edits line-by-line. Removing these trailing commas avoids syntax introduced in Swift 6.1 without changing behavior. No correctness or regression issues found.

Build/test results remain author-reported; not independently rerun.