我也在 Github 上发布了这个问题，结果发现文档有点误导.它说:

I posted the issue on Github as well and it turns out that the documentation is a little misleading. It says:

{
    "repositories": [
        {
            "type": "path",
            "url": "../../packages/my-package"
        }
    ],
    "require": {
        "my/package": "*"
    }
}

但是，如果您只有一个没有发布的本地 repo，您​​必须使用:

However, if you just have a local repo without releases, you have to use:

{
    "repositories": [
        {
            "type": "path",
            "url": "../../packages/my-package"
        }
    ],
    "require": {
        "my/package": "dev-master"
    }
}

版本 dev-master 是这里的关键(假设您在 master 分支上工作).这有点令人恼火，但感谢一些乐于助人的作曲家贡献者，我终于可以掌握这一点.

The version dev-master is the key here (given that you are working on the master branch). This was mildly infuriating, but thanks to some helpful composer contributors, I could finally get a grip on this.

我希望这对将来的人有所帮助.

I hope this may help somebody in the future.

祝你好运！