Neo4j-Swift (Theo)依赖图分解问题

Question

我在安装Neo4j Theo SDK依赖项到我的Vapor3项目(Swift4.2)时遇到了问题。我已经这样配置了我的Package.swift文件：

// swift-tools-version:4.2
import PackageDescription
let package = Package(
...
    dependencies: [
        .package(url: "https://github.com/vapor/vapor.git", from: "3.3.1"),
        .package(url: "https://github.com/vapor/fluent.git", from: "3.2.1"),
        .package(url: "https://github.com/vapor/fluent-postgresql.git", from: "1.0.0"),
        .package(url: "https://github.com/vapor/auth.git", from: "2.0.4"),
        .package(url: "https://github.com/vapor/console.git", from: "3.1.1"),
        .package(url: "https://github.com/vapor-community/pagination.git", from: "1.0.9"),
        .package(url: "https://github.com/Jinxiansen/Guardian.git", from: "3.0.0"),
        .package(url: "https://github.com/SwiftyBeaver/SwiftyBeaver-Vapor.git", from: "1.1.0"),
        .package(url: "https://github.com/SwiftyBeaver/SwiftyBeaver.git", .exact("1.6.0")),
        .package(url: "https://github.com/Neo4j-Swift/Neo4j-Swift.git", .exact("4.0.2")),
    ],
...
)

但是，当我尝试获取Swift依赖项时，收到以下错误：

Updating https://github.com/Neo4j-Swift/Neo4j-Swift.git
error: dependency graph is unresolvable; found these conflicting requirements:
Dependencies: 
    https://github.com/Neo4j-Swift/Neo4j-Swift.git @ 4.0.2

我想知道我到底做错了什么？我还尝试了最新版本的Theo (Swift 5.0)，并收到了相同的错误。任何关于将Theo包集成到SPM项目中的帮助都将不胜感激。

Answer 1

这是全部错误吗？如果使用swift build --enable-pubgrub-resolver，通常会得到关于冲突依赖项的更好的错误消息