8000 Add instructions on how to update crates by nickgerace · Pull Request #7227 · systeminit/si · GitHub
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Add instructions on how to update crates #7227

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Sep 5, 2025
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Add instructions on how to update crates #7227

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37 changes: 37 additions & 0 deletions DEV_DOCS.md
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Expand Up @@ -424,6 +424,43 @@ In other words, you build the same buildable target with two different modes and

If you are looking to find other `buck2` users and/or ask questions, share ideas and share experiences related to `buck2`, check out the unofficial ["Buck2 Fans" Discord server](https://discord.gg/P5Tbrt735m).

# Updating Rust Dependencies

This section contains all information related to updating crates and `buck2` Rust dependencies.

## Update All Crates

You can update all crates by executing the following commands:

```shell
# Updates all crates
cargo update

# Syncs the root `Cargo.toml` and `Cargo.lock` with the third party `BUCK` file
buck2 run //support/buck2:sync-cargo-deps
```

> [!TIP]
> If a crate didn't update beyond its patch or minor version, you will need to update its version in the root `Cargo.toml` file.
> Note that all crates in the workspace use `workspace = true` for versioning.
> As a result, changing the version there will change it for all crates using that crate.

## Update a Single Crate

You can update a single crate using the `--precise` flag.

```shell
cargo update -p <CRATE> --precise <VERSION>
buck2 run //support/buck2:sync-cargo-deps
```

Here is an example from [PR #7226](https://github.com/systeminit/si/pull/7226):

```shell
cargo update -p slab --precise 0.4.11
buck2 run //support/buck2:sync-cargo-deps
```

# Reading and Writing Rust-based Code Documentation

This section contains all information related to developer documentation for this repository's source code.
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