如何在 git repo 中链接依赖项？
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How can I have linked dependencies in a git repo?
提问by Lea Verou
In my scripts, I often use libraries (mine or others') that have their own repos. I don't want to duplicate those in my repo and get stuck with updating them every time a new version comes out. However, when somebody clones the repo, it should still work locally and not have broken links.
在我的脚本中，我经常使用拥有自己存储库的库（我的或其他人的）。我不想在我的 repo 中复制那些，并在每次出现新版本时都坚持更新它们。然而，当有人克隆 repo 时，它应该仍然可以在本地工作并且没有断开的链接。
Any ideas about what I could do?
关于我能做什么的任何想法？
回答by Emily
You can do this with submodules in git. In your repository, do:
您可以使用 git 中的子模块执行此操作。在您的存储库中，执行以下操作：
git submodule add path_to_repo path_where_you_want_it
So, if the library's repository had a URL of git://github.com/example/some_lib.gitand you wanted it at lib/some_libin your project, you'd enter:
因此，如果库的存储库有一个 URLgit://github.com/example/some_lib.git并且您希望它lib/some_lib在您的项目中，您将输入：
git submodule add git://github.com/example/some_lib.git lib/some_lib
Note that this needs to be done from the top-level directory in your repository. So don't cdinto the directory where you're putting it first.
请注意，这需要从存储库的顶级目录中完成。所以不要cd进入你首先放置它的目录。
After you add a submodule, or whenever someone does a fresh checkout of your repository, you'll need to do:
添加子模块后，或者每当有人对您的存储库进行全新检出时，您需要执行以下操作：
git submodule init
git submodule update
And then all submodules you've added will be checked out at the same revision you have.
然后您添加的所有子模块都将在您拥有的同一修订版中检出。
When you want to update to a newer version of one of the libraries, cdinto the submodule and pull:
当您想更新到其中一个库的较新版本时，请cd进入子模块并拉取：
cd lib/some_lib
git pull
Then, when you do a git statusyou should see lib/someliblisted in the modified section. Add that file, commit, and you're up to date. When a collaborator pulls that commit into their repository, they'll see lib/somelibas modified until they run git submodule updateagain.
然后，当您执行一个操作时，git status您应该会看到lib/somelib已修改部分中列出的内容。添加该文件，提交，然后您就是最新的。当协作者将该提交拉入其存储库时，他们将看到lib/somelib已修改，直到git submodule update再次运行。
