feat: add build-slice support, top-level build-slice key

Metadata

Project: craft-application
Number: #1188
Type: pull request
State: closed
Author: mr-cal
Labels: —
Created: 2026-09-22 06:59 PM UTC
Updated: 2026-09-25 02:57 PM UTC
Closed: 2026-09-25 04:15 PM UTC

Current evaluation

Merged #1188, adding AppMetadata.enable_build_slices and top-level build-slices support; empty or null values are now a no-op.

Resolution: closed resolved

Reason: PR #1188 was approved and merged with build-slice support, documentation, and tests. A reported missing-Chisel failure was addressed separately by canonical/craft-parts#1737.

Evaluated by: mr-cal-bot

No scores available.

Issue body

- [x] Have you followed the guidelines for contributing? - [x] Have you signed the [CLA](http://www.ubuntu.com/legal/contributors/)? - [x] Have you successfully run `make lint && make test`? - [x] Have you added an entry to the changelog (`docs/reference/changelog.rst`)? --- - Adds an `AppMetadata.enable_build_slices` setting. - Adds a top-level `build-slices` key. (CRAFT-5307)

Evaluation history

Date	Model	Scores	Action	Summary
2026-10-03 03:51 PM UTC	stealth/space-bunny-alpha	—	closed resolved	Merged #1188, adding AppMetadata.enable_build_slices and top-level build-slices support; empty or null values are now a no-op.
2026-09-25 07:17 PM UTC	stealth/space-bunny-alpha	—	closed resolved	Merged canonical/craft-parts#1725, adding AppMetadata.enable_build_slices and a top-level build-slices key; empty or null values were finalized as a no-op.
2026-09-25 10:21 AM UTC	stealth/space-bunny-alpha	Impact: 53 Quick Win: 15 Complexity: 53 Confidence: 87 Actionability: 62	needs review	Adds AppMetadata.enable_build_slices and top-level build-slices configuration. Approved with all CI green, but five review comments remain and witchcraft still fails locally when chisel is missing.
2026-09-22 07:07 PM UTC	qwen/qwen3.6-35b-a3b	Impact: 55 Quick Win: 18 Complexity: 45 Confidence: 70 Actionability: 60	needs review	Adds AppMetadata.enable_build_slices setting and top-level build-slices key. New PR (0 days old), CI passing, 1 unresolved review comment, awaiting maintainer review.

Update history

Date	Change
2026-09-25 04:15 PM UTC	closed
2026-09-25 02:57 PM UTC	updated
2026-09-25 02:51 PM UTC	updated
2026-09-25 12:18 PM UTC	updated
2026-09-25 12:06 PM UTC	updated
2026-09-25 11:51 AM UTC	updated
2026-09-25 11:28 AM UTC	updated
2026-09-24 08:29 PM UTC	updated
2026-09-24 06:58 PM UTC	updated
2026-09-24 06:00 PM UTC	updated
2026-09-24 05:07 PM UTC	updated
2026-09-24 04:20 PM UTC	updated
2026-09-24 03:50 PM UTC	updated
2026-09-24 03:42 PM UTC	updated
2026-09-24 02:37 PM UTC	updated
2026-09-24 02:32 PM UTC	updated
2026-09-24 02:17 PM UTC	updated
2026-09-24 02:10 PM UTC	updated
2026-09-24 01:34 PM UTC	updated
2026-09-24 01:28 PM UTC	updated
2026-09-24 01:17 PM UTC	updated
2026-09-24 12:01 PM UTC	updated
2026-09-23 05:25 PM UTC	updated
2026-09-23 05:20 PM UTC	updated
2026-09-23 04:00 PM UTC	updated
2026-09-23 03:24 PM UTC	updated
2026-09-23 03:20 PM UTC	updated
2026-09-23 03:11 PM UTC	updated
2026-09-23 02:58 PM UTC	updated
2026-09-23 02:36 PM UTC	updated
2026-09-23 12:24 PM UTC	updated
2026-09-23 11:52 AM UTC	updated
2026-09-22 08:21 PM UTC	updated
2026-09-22 08:05 PM UTC	updated
2026-09-22 07:07 PM UTC	updated
2026-09-22 07:01 PM UTC	created

Related work

Related To: canonical/craft-parts#1737 (confidence 98%)
Adds conditional Chisel installation for parts declaring build-slices and fixes the failure reported during PR testing.

Related issues

Issue	Project	State	Summary	Similarity
#1195 Conditionally add build-slices to the json schema	craft-application	open	Triaged enhancement to conditionally expose the existing top-level build-slices field in JSON schema when AppMetadata.enable_build_slices is enabled; it remains unimplemented.	75%
#1758 feat: track build-slices in part state	craft-parts	merged	Merged PR #1758 adds build-slices to BuildState properties_of_interest so the build step invalidates when build-slices changes; updates tests.	73%