Swift软件包管理器:如何将本地共享库作为依赖项添加到多个可执行文件？

Question

我有一个简单的gRPC应用程序，一个客户端和一个服务器。两者都依赖于生成的快速grpc绑定。为了简单起见，当我将共享文件复制一次到客户端文件夹，第二次复制到服务器文件夹时，会快速构建并运行这两种文件。出于明显的原因，我希望将共享文件分为共享库、服务器库和客户端库，目的是只将共享和客户端特定的库导入客户端。

从名为DmxLib的共享库开始，我无法理解Package.swift文件。从本质上讲，这些文档说，创建一个lib，并将其作为依赖项添加到这里。当我这样做的时候，Swift构建失败了，说导入的文件不存在。当我将DmXLib文件夹中的本地文件添加到产品依赖项时，它会告诉我找不到该文件。

编辑器是VSCode，平台是Ubuntu20.04和SWIFT5.3，没有XCode。

我如何准确地声明一个共享的本地库，该库可以导入，并在客户机和服务器中实际使用？

我的源树看起来是这样的

​

​

还有我的Package.swift文件

        // swift-tools-version:5.2
        // The swift-tools-version declares the minimum version of Swift required to build this package.

        import PackageDescription

        let package = Package(
            name: "dmx-db",
            products: [
                .executable(name: "DmxServer", targets: ["DmxServer"]),
                .executable(name: "DmxClient", targets: ["DmxClient"]),
                // This lib will be imported into both, client and server. 
                .library(name: "DmxLib", targets: ["DmxLib"]),
            ],  
            dependencies: [
                .package(url: "https://github.com/grpc/grpc-swift.git", from: "1.0.0-alpha.21"),
                .package(url: "https://github.com/codewinsdotcom/PostgresClientKit", from: "1.0.0"),
                .package(url: "https://github.com/swift-server/swift-service-lifecycle.git", from: "1.0.0-alpha.5"),
                // Why do I have to declare local files as dependencies???
                .package(path: "../Sources/DmxLib/datasource.grpc.swift")
                ],
            //
            targets: [
                .target(name: "DmxLib", dependencies: [
                    "datasource.grpc.swift" 
                ] ),

                .target(name: "DmxServer", dependencies: [
                    "DmxLib", 
                    .product(name: "GRPC", package: "grpc-swift"),
                    .product(name: "PostgresClientKit", package: "PostgresClientKit"), 
                    .product(name: "Lifecycle", package: "swift-service-lifecycle"), 
                    ]),

                .target(name: "DmxClient", dependencies: [
                    "DmxLib",
                    .product(name: "GRPC", package: "grpc-swift"),
                ]),
            ] 
        )

Answer 1

这样就行了。您不需要将“依赖项”添加到所有源都在本地计算机上的目标中。

// swift-tools-version:5.3

import PackageDescription

let package = Package(
    name: "dmx-db",
    products: [
        .executable(name: "DmxServer", targets: ["DmxServer"]),
        .executable(name: "DmxClient", targets: ["DmxClient"]),
                // This lib will be imported into both, client and server. 
        .library(name: "DmxLib", targets: ["DmxLib"]),
    ],
    dependencies: [
        .package(url: "https://github.com/grpc/grpc-swift.git", from: "1.0.0-alpha.21"),
        .package(url: "https://github.com/codewinsdotcom/PostgresClientKit", from: "1.0.0"),
        .package(url: "https://github.com/swift-server/swift-service-lifecycle.git", from: "1.0.0-alpha.5"),
    ],
    targets: [
        .target(name: "DmxServer", dependencies: [
            "DmxLib", 
            .product(name: "GRPC", package: "grpc-swift"),
            .product(name: "PostgresClientKit", package: "PostgresClientKit"), 
            .product(name: "Lifecycle", package: "swift-service-lifecycle"), 
        ]),
        .target(name: "DmxClient", dependencies: [
            "DmxLib",
            .product(name: "GRPC", package: "grpc-swift"),
        ]),
        .target(name: "DmxLib", dependencies: []),
    ]
)

这确实要求您在包的根目录中有一个Sources目录，其中有三个文件夹，分别名为DmxLib、DmxClient和DmxServer。

注意:我实际上已经将swift-tools-version更新为5.3，因为我从https://github.com/Samasaur1/Solver/blob/main/Package.swift复制和修改了它，但我认为它应该与swift-tools-version为5.2的

Answer 2

对于本地，我们的Xcode UI/UX很差。

(在我的示例中，我有一个SPM、"LocalSPMLib“和一个消费应用程序"LocalSPMConsumerApp")

你可以这样做：

1. 像往常一样添加SPM，通过SPM菜单添加，或者拖到项目中。

它会增加项目，但不会奏效.应该出现在二进制文件下，但不显示;(

1. 重新添加为二进制自由(可怕的.但有效.)

​

​

现在您可以调用：

import XCTest
import LocalSPMLib

@testable import LocalSPMConsumerApp

class LocalSPMConsumerAppTests: XCTestCase {

    override func tearDownWithError() throws {
        // Put teardown code here. This method is called after the invocation of each test method in the class.
    }

    func testExample() throws {
        XCTAssertEqual(LocalSPMLib().version, 1)

    }

}