Vapor 4 叶 - 无法解决依赖关系

Question

在使用终端创建新的蒸汽项目后， vapor new someProjectName同时还添加了 fluent 和 postgres 作为我的数据库......一切顺利，但是，在手动添加叶子后，我得到了一个无法解决依赖错误的错误，这就是我的包.swift 文件：

// swift-tools-version:5.2
import PackageDescription

let package = Package(
    name: "someProjectName",
    platforms: [
       .macOS(.v10_15)
    ],
    dependencies: [
        // 💧 A server-side Swift web framework.
        .package(url: "https://github.com/vapor/vapor.git", from: "4.0.0"),
        .package(url: "https://github.com/vapor/fluent.git", from: "4.0.0"),
        .package(url: "https://github.com/vapor/fluent-postgres-driver.git", from: "2.0.0"),
        .package(url: "https://github.com/vapor/leaf.git", from: "3.0.0"),
    ],
    targets: [
        .target(
            name: "App",
            dependencies: [
                .product(name: "Fluent", package: "fluent"),
                .product(name: "FluentPostgresDriver", package: "fluent-postgres-driver"),
                .product(name: "Vapor", package: "vapor"),
                .product(name: "Leaf", package: "leaf")
            ],
            swiftSettings: [
                // Enable better optimizations when building in Release configuration. Despite the use of
                // the `.unsafeFlags` construct required by SwiftPM, this flag is recommended for Release
                // builds. See <https://github.com/swift-server/guides#building-for-production> for details.
                .unsafeFlags(["-cross-module-optimization"], .when(configuration: .release))
            ]
        ),
        .target(name: "Run", dependencies: [.target(name: "App")]),
        .testTarget(name: "AppTests", dependencies: [
            .target(name: "App"),
            .product(name: "XCTVapor", package: "vapor"),
        ])
    ]
)

一定是我添加了叶子依赖错误，并且在查看了蒸气的文档后，他们也没有更新他们的文档……如果您知道这个问题的答案，请告诉我。 谢谢！

Answer 1

Leaf 仍在 RC 中，这就是为什么您无法找到有关它的任何信息。

将版本设置为4.0.0-rc ，它应该可以工作