git依赖图是无法解析的；发现了这些相互矛盾的要求：依赖关系：如何避免？

Question

我借助https://help.github.com/articles/creating-a-new-repository/在github上创建了一个存储库，然后按照以下说明将项目上传到github：

git init
git add .
git commit -m "HelloKit library"
git tag v0.1.0
git remote add origin git@github.com:example/HelloKit.git
git push --set-upstream origin master
git push --tags

但是之后，当我运行命令时，使用此Package.swift文件更新swift软件包

import PackageDescription

let package = Package(
    name: "Dependencies",
    products: [
        .library(name: "Dependencies", type: .dynamic, targets: ["Dependencies"]),
    ],
    dependencies: [
        .package(url: "https://github.com/ralfebert/HelloKit.git", from: "0.1.0"),
    ],
    targets: [
        .target(name: "Dependencies", dependencies: ["HelloKit"], path: "." )
    ]
)

我遇到一个错误：

Updating https://github.com/ralfebert/HelloKit.git
error: dependency graph is unresolvable; found these conflicting requirements: Dependencies: 

谁知道我做错了什么？