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cmake: use the cmake snap by default

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Metadata

Project
craft-parts
Number
#938
Type
pull request
State
open
Author
soumyaDghosh
Labels
—
Created
Updated
Closed
—

Current evaluation

Adds an option to source cmake from the snap and makes the cmake snap the default in the cmake plugin. Maintainers rejected the default change as breaking; author unresponsive for ~6 months. No CI, no approvals.

Suggested action: close not mergeable

Reason: Maintainer tigarmo explicitly stated 'Changing the default to use the snap is a no-go, this will for sure break existing projects', and sergiusens agreed, so the backward-incompatible default change is expressly unacceptable. The discussion pivoted to different approaches (cmake-deps detection, core26 fallback) that would be a separate change, and the author has not responded to the feedback in ~6 months (last activity 2024-12-20). The current cmake_plugin.py still hardcodes the cmake deb, confirming nothing was landed.

Impact: 55 Quick Win: 24.75 Staleness: 65 Complexity: 55 Confidence: 80

Issue body

- allow using the cmake snap or deb - add an option to specify the source for cmake The snap is set by default because 1. It's more up-to-date and can run on any base reliably 2. Debs have a path precedence over the snaps, so, if the cmake snap is shipped with the cmake, the cmake deb is used by default until the `PATH` is overriden, which is problematic. see [here](https://invent.kde.org/network/neochat/-/merge_requests/2055) --- - [x] Have you signed the [CLA](http://www.ubuntu.com/legal/contributors/)?

Evaluation history

Date Model Scores Action Summary
qwen/qwen3.8-27b
Impact: 55
Quick Win: 24.75
Staleness: 65
Complexity: 55
Confidence: 80
close not mergeable Adds an option to source cmake from the snap and makes the cmake snap the default in the cmake plugin. Maintainers rejected the default change as breaking; author unresponsive for ~6 months. No CI, no approvals.
qwen/qwen3.6-35b-a3b
Staleness: 75
Complexity: 20
Confidence: 90
close not mergeable Suggests defaulting CMake to the snap package and adds a source configuration option. Maintainers rejected the default change due to backward compatibility risks, recommending PATH overrides or core26+ adjustments instead.
qwen3.6-35b-a3b-mtp-q6
Staleness: 90
Complexity: 20
Confidence: 90
close not mergeable Proposes switching default CMake source from deb to snap. Maintainers rejected the default change due to backward compatibility concerns. Discussion shifted to alternative workarounds and long-term plugin improvements. PR remains unupdated.
qwen3.6-35b-a3b-mtp-q6
Staleness: 85
Complexity: 20
Confidence: 90
close stale Proposes defaulting the cmake plugin to the snap package. Maintainers reject this for backward compatibility, suggesting alternatives like conditional build-packages or explicit cmake-deps parts instead. Awaiting consensus on a non-breaking solution.

Update history

No update history recorded yet.

Related work

  • Related To: canonical/craft-parts#948 (confidence 70%)

    Referenced in lengau's comment about needing to document PATH manipulation, which is central to the discussion of how to prefer the cmake snap over the deb.

Related issues

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