Question

我在Linux上有一个后端swift项目（Ubuntu 16.04，最新更新）。我的Package.swift看起来像：

dependencies: [
        .package(url: "https://github.com/czechboy0/Redbird.git", from: "0.10.0"),
        .package(url: "https://github.com/PerfectlySoft/Perfect-HTTPServer.git", from: "3.0.0"),
        .package(url: "https://github.com/Swinject/Swinject.git", .exact("2.2.0")),
        .package(url: "https://github.com/IBM-Swift/SwiftyRequest.git", from: "1.0.0"),
        .package(url: "https://github.com/PerfectlySoft/Perfect-Logger.git", from: "3.0.0"),
        .package(url: "https://github.com/OpenKitten/MongoKitten.git", from: "4.0.0"),
    ],

当我使用Swift 4执行swift build时，一切都可以正常运行：项目已构建并执行，但是当我使用最新的Swift 5 build执行同一命令时，我得到了25个随机依赖项，并且构建过程停止了：

$ swift build
Updating https://github.com/Swinject/Swinject.git
Updating https://github.com/IBM-Swift/SwiftyRequest.git
Updating https://github.com/PerfectlySoft/PerfectLib.git
Updating https://github.com/vapor/socks.git
Updating https://github.com/PerfectlySoft/Perfect-Logger.git
Updating https://github.com/IBM-Swift/CircuitBreaker.git
Updating https://github.com/IBM-Swift/LoggerAPI.git
Updating https://github.com/PerfectlySoft/Perfect-Thread.git
Updating https://github.com/PerfectlySoft/Perfect-Crypto.git
Updating https://github.com/OpenKitten/KittenCTLS.git
Updating https://github.com/PerfectlySoft/Perfect-COpenSSL-Linux.git
Updating https://github.com/PerfectlySoft/Perfect-libcurl.git
Updating https://github.com/PerfectlySoft/Perfect-Net.git
Updating https://github.com/czechboy0/Redbird.git
Updating https://github.com/OpenKitten/Schrodinger.git
Updating https://github.com/OpenKitten/CryptoKitten.git
Updating https://github.com/OpenKitten/MongoKitten.git
Updating https://github.com/PerfectlySoft/Perfect-CZlib-src.git
Updating https://github.com/OpenKitten/BSON.git
Updating https://github.com/PerfectlySoft/Perfect-HTTP.git
Updating https://github.com/PerfectlySoft/Perfect-HTTPServer.git
Updating https://github.com/PerfectlySoft/Perfect-LinuxBridge.git
Updating https://github.com/PerfectlySoft/Perfect-CURL.git
Updating https://github.com/apple/swift-log.git
Updating https://github.com/OpenKitten/Cheetah.git

每次执行swift build时，都会得到不同的依赖关系列表和/opt/swift/usr/bin/swift-build运行过程。我等了好几天，没结果。

Answer 1

发生此问题是因为我的依赖关系树中至少有一个软件包仍使用Swift 3清单（Swift 5不再支持的清单（不含工具版本的Package.swift文件：4.x或5.x）。） >

swift build --enable-pubgrub-resolver

将帮助您找到它。

在Linux上迁移到Swift 5后，软件包管理器出现了奇怪的问题

1 个答案: