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@flutteractionsbot flutteractionsbot commented Apr 24, 2025

This pull request is created by automatic cherry pick workflow
Please fill in the form below, and a flutter domain expert will evaluate this cherry pick request.

Issue Link:

What is the link to the issue this cherry-pick is addressing?

#167247
We identified a breaking change in beta, this change un-breaks it.

Changelog Description:

Explain this cherry pick in one line that is accessible to most Flutter developers. See best practices for examples

Restore RenderConstrainedLayoutBuilder with default layoutInfo implementation to undo a breaking change.

Impact Description:

What is the impact (ex. visual jank on Samsung phones, app crash, cannot ship an iOS app)? Does it impact development (ex. flutter doctor crashes when Android Studio is installed), or the shipping production app (the app crashes on launch)

A class was renamed, which left developers with a "class not found" error as their only guide.

Workaround:

Is there a workaround for this issue?

Nope.

Risk:

What is the risk level of this cherry-pick?

  • Low
  • Medium
  • High

Test Coverage:

Are you confident that your fix is well-tested by automated tests?

  • Yes
  • No

Validation Steps:

What are the steps to validate that this fix works?

Classes that mixin RenderConstrainedLayoutBuilder are no longer broken and the code can compile.

This remedies a breaking change from
flutter#164034 by restoring
RenderConstrainedLayoutBuilder as a typedef of
RenderAbstractLayoutBuilderMixin and providing a default implementation
for `layoutInfo`.

Fixes flutter#167247

## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [x] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- Links -->
[Contributor Guide]:
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[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
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[Features we expect every widget to implement]:
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[flutter/tests]: https://github.com/flutter/tests
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[Discord]:
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[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
@flutteractionsbot flutteractionsbot added the cp: review Cherry-picks in the review queue label Apr 24, 2025
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@Piinks please fill out the PR description above, afterwards the release team will review this request.

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This pull request was opened from and to a release candidate branch. This should only be done as part of the official Flutter release process. If you are attempting to make a regular contribution to the Flutter project, please close this PR and follow the instructions at Tree Hygiene for detailed instructions on contributing to Flutter.

Reviewers: Use caution before merging pull requests to release branches. Ensure the proper procedure has been followed.

@github-actions github-actions bot added framework flutter/packages/flutter repository. See also f: labels. f: scrolling Viewports, list views, slivers, etc. labels Apr 24, 2025
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@matanlurey matanlurey left a comment

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LGTM

@matanlurey matanlurey added the autosubmit Merge PR when tree becomes green via auto submit App label Apr 25, 2025
@auto-submit auto-submit bot merged commit 030e2a5 into flutter:flutter-3.32-candidate.0 Apr 25, 2025
143 checks passed
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request May 20, 2025
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request May 20, 2025
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request May 21, 2025
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