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Oliver Scherer 2020-04-02 18:33:48 +02:00
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CONTRIBUTING.md
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@ -203,7 +203,7 @@ They are just regular files and directories. This is in contrast to `submodule`
There are two synchronization directions: `subtree push` and `subtree pull`.
```
git subtree push -P src/tools/clippy git@github.com:your-github-name/rust-clippy rustup
git subtree push -P src/tools/clippy git@github.com:your-github-name/rust-clippy sync-from-rust
```
takes all the changes that
@ -211,8 +211,8 @@ happened to the copy in this repo and creates commits on the remote repo that ma
changes. Every local commit that touched the subtree causes a commit on the remote repo, but is
modified to move the files from the specified directory to the tool repo root.
Make sure to not pick the `master` branch, so you can open a normal PR to the tool to merge that
subrepo push.
Make sure to not pick the `master` branch on the tool repo, so you can open a normal PR to the tool
to merge that subrepo push.
```
git subtree pull -P src/tools/clippy https://github.com/rust-lang/rust-clippy master
@ -224,20 +224,21 @@ the specified directory in the rust repository.
It is recommended that you always do a push first and get that merged to the tool master branch.
Then, when you do a pull, the merge works without conflicts.
While definitely possible to resolve conflicts during a pull, you may have to redo the conflict
While it's definitely possible to resolve conflicts during a pull, you may have to redo the conflict
resolution if your PR doesn't get merged fast enough and there are new conflicts. Do not try to
rebase the result of a `git subtree pull`, rebasing merge commits is a bad idea in general.
You always need to specify the `-P` prefix to the subtree directory and the corresponding remote
repository. If you specify the wrong directory or repository
you'll get very fun merges that try to push the wrong directory to the wrong remote repository.
Luckily you can just abort this without any consequences and try again. It is usually fairly obvious
Luckily you can just abort this without any consequences by throwing away either the pulled commits
in rustc or the pushed branch on the remote and try again. It is usually fairly obvious
that this is happening because you suddenly get thousands of commits that want to be synchronized.
#### Creating a new subtree dependency
If you want to create a new subtree dependency from an existing repository, call (from this
repository's root directory!!)
repository's root directory!)
```
git subtree add -P src/tools/clippy https://github.com/rust-lang/rust-clippy.git master
@ -247,7 +248,7 @@ This will create a new commit, which you may not rebase under any circumstances!
and redo the operation if you need to rebase.
Now you're done, the `src/tools/clippy` directory behaves as if clippy were part of the rustc
monorepo, so no one but you (or others that synchronize subtrees) needs actually use `git subtree`.
monorepo, so no one but you (or others that synchronize subtrees) actually needs to use `git subtree`.
### External Dependencies (submodules)