sidpug-arcana opened a new issue, #209:
URL: https://github.com/apache/arrow-swift/issues/209
## Describe the bug
`swift build` in `CDataWGo/` fails, because `CDataWGo/Package.swift` still
declares a local dependency on `../Arrow`:
```swift
.package(path: "../Arrow") // 👈 Reference to a Local Package
```
That directory no longer exists. The package was consolidated into a single
manifest at the repository root in #109 (`d24935c`, "Move ArrowTests to
standard layout"), but the `CDataWGo` manifest was not updated at the time.
Error on `main` (`f02f9d0`), macOS 27.0, Swift 6.4.2:
```console
$ cd CDataWGo && swift build
error: the package at '.../arrow-swift/Arrow' cannot be accessed
(.../arrow-swift/Arrow doesn't exist in file system)
```
Changing only the path to `..` is not enough, because SwiftPM derives a path
dependency's identity from its directory name. The existing product reference
then fails:
```console
error: 'cdatawgo': unknown package 'Arrow' in dependencies of target
'go-swift';
valid packages are: 'arrow-swift' (at '.../arrow-swift')
```
## Expected behavior
`swift build` in `CDataWGo/` should succeed, so the Go ↔ Swift C data
interface harness can be built, or the harness should be removed if it is no
longer maintained.
I verified that this manifest change builds successfully:
```swift
.package(name: "Arrow", path: "..")
```
It works both against the current root manifest (`swift-tools-version:
5.10`) and against the `swift-tools-version: 6.1` root from #202.
## Additional context
- Nothing in CI builds `CDataWGo/`, which is why this went unnoticed:
`ci/scripts/{build,test}.sh` only build the root package. The Swift side is
also excluded from SwiftLint (`.swiftlint.yml`), and Dependabot only tracks the
Go module there.
- The harness builds the static `go-swift` library from
`CDataWGo/Sources/go-swift/CDataTest.swift`, which `CDataWGo/main.go` links
with cgo to exercise the C data interface against `arrow-go` in both directions.
- The same layout migration left stale `/Arrow/` and `/ArrowFlight/` entries
in `.github/dependabot.yml`; those are cleaned up separately in #208.
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