fix: add missing await

[Brett-Best]

Fixes:

SwiftCompile normal arm64 /Users/brettbest/Developer/swift-build/Sources/SWBUtil/PbxCp.swift (in target 'SWBUtil' from project 'SwiftBuild')
    cd /Users/brettbest/Developer/swift-build/.swiftpm/xcode
    

/Users/brettbest/Developer/swift-build/Sources/SWBUtil/PbxCp.swift:571:19: error: expression is 'async' but is not marked with 'await'
        options = try CopyOptions.parse(argv)
                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
                      await 
/Users/brettbest/Developer/swift-build/Sources/SWBUtil/PbxCp.swift:571:23: note: call is 'async'
        options = try CopyOptions.parse(argv)

I believe this was caused by apple/swift-argument-parser@d6f4e7a and the dependency constraint for it is from: "1.0.3" meaning 1.8.0 satisfies this - hence it breaking.

If a lower version is checked out now a warning of: No 'async' operations occur within 'await' expression is generated.

I thought the below might work:

        #if canImport(ArgumentParser, _version: 1.8.0)
        options = try await CopyOptions.parse(argv)
        #else
        options = try CopyOptions.parse(argv)
        #endif

But I get: https://docs.swift.org/compiler/documentation/diagnostics/module-version-missing/

I thought I saw SwiftPM would set this but perhaps that hasn't shipped yet or I imagined it :D

[Copilot]

Pull request overview

Note

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Updates pbxcp to await asynchronous option parsing.

Changes:

• Switch CopyOptions.parse(argv) call to try await CopyOptions.parse(argv) inside pbxcp.

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[Brett-Best]

Closing in favour of #1428 which I missed when looking through the list before making this 🥲