SPM error: duplicate key found: "SourceryExecutable"

[ailinykh]

In case of building a fat binary it fails with duplicate key found error

error: duplicate key found: 'ID(moduleName: "SourceryExecutable", packageIdentity: sourcery, buildTriple: PackageGraph.BuildTriple.destination)'

Prerequisites

Xcode 16.2, macOS Sequoia 15.4, MacBook Pro M2 Max 32 GB
Apple Swift version 6.0.3 (swiftlang-6.0.3.1.10 clang-1600.0.30.1)
Target: arm64-apple-macosx13.0

Steps to reproduce

1. Create empty directory

mkdir sourcery-duplicate-key-found && cd $_

2. Initialize a sample SPM project

swift package init

3. Add Sourcery as a dependency

swift package add-dependency https://github.com/krzysztofzablocki/Sourcery.git --exact 2.2.6

4. Build milti-arch binary

swift build --arch arm64 --arch x86_64

Expected result

Building for debugging...
[6/6] Compiling sourcery_duplicate_key_found sourcery_duplicate_key_found.swift
Build complete! (4.17s)

Actual result

error: duplicate key found: 'ID(moduleName: "SourceryExecutable", packageIdentity: sourcery, buildTriple: PackageGraph.BuildTriple.destination)'

Solution

Probably, this issue could be resolved by removing this line:

Sourcery/Package.swift

Line 279 in 3359554

.executable(name: "sourcery", targets: ["SourceryExecutable"]),

however, I believe that there are better solution