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69 lines
2.6 KiB
Markdown
69 lines
2.6 KiB
Markdown
# Changelog Update
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If you want to help with updating the [changelog][changelog], you're in the right place.
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## When to update
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Typos and other small fixes/additions are _always_ welcome.
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Special care needs to be taken when it comes to updating the changelog for a new
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Rust release. For that purpose, the changelog is ideally updated during the week
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before an upcoming stable release. You can find the release dates on the [Rust
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Forge][forge].
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Most of the time we only need to update the changelog for minor Rust releases. It's
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been very rare that Clippy changes were included in a patch release.
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## How to update
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### 1. Finding the relevant Clippy commits
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Each Rust release ships with its own version of Clippy. The Clippy submodule can
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be found in the [tools][tools] directory of the Rust repository.
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To find the Clippy commit hash for a specific Rust release you select the Rust
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release tag from the dropdown and then check the commit of the Clippy directory:
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When writing the release notes for the upcoming stable release you want to check
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out the commit of the current Rust `beta` tag.
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### 2. Fetching the PRs between those commits
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You'll want to run `util/fetch_prs_between.sh commit1 commit2 > changes.txt`
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and open that file in your editor of choice.
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* `commit1` is the Clippy commit hash of the previous stable release
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* `commit2` is the Clippy commit hash of the release you want to write the changelog for.
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When updating the changelog it's also a good idea to make sure that `commit1` is
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already correct in the current changelog.
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### 3. Authoring the final changelog
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The above script should have dumped all the relevant PRs to the file you
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specified. It should have filtered out most of the irrelevant PRs
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already, but it's a good idea to do a manual cleanup pass where you look for
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more irrelevant PRs. If you're not sure about some PRs, just leave them in for
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the review and ask for feedback.
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With the PRs filtered, you can start to take each PR and move the
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`changelog: ` content to `CHANGELOG.md`. Adapt the wording as you see fit but
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try to keep it somewhat coherent.
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The order should roughly be:
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1. New lints
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2. Changes that expand what code existing lints cover
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3. ICE fixes
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4. False positive fixes
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5. Suggestion fixes/improvements
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Please also be sure to update the Beta/Unreleased sections at the top with the
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relevant commit ranges.
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[changelog]: https://github.com/rust-lang/rust-clippy/blob/master/CHANGELOG.md
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[forge]: https://forge.rust-lang.org/
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[tools]: https://github.com/rust-lang/rust/tree/master/src/tools
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