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Add a `bundler-version` property to the `core18` Ruby plugin

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Metadata

Project
snapcraft
Number
#4968
Type
issue
State
open
Author
mr-cal
Labels
Status: Triaged Type: Enhancement
Created
Updated
Closed
—

Current evaluation

Triaged enhancement to pin Bundler in the core18 Ruby plugin; no fix is present, and the newer craft-parts Ruby plugin still installs Bundler without a version constraint.

Suggested action: keep open

Reason: The maintainer-authored request is explicitly labeled Status: Triaged and Type: Enhancement, and directly identifies the compatibility and reproducibility problem. No resolving change was found; the current craft-parts Ruby plugin still runs `gem install --env-shebang --no-document bundler` without a version, while core18 remains buildable through the Snapcraft 7 track.

Evaluated by: mr-cal-bot

Impact: 40 Quick Win: 22 Complexity: 30 Confidence: 87 Actionability: 79

Issue body

### What needs to get done Allow users to pin the bundler to a specific version. ### Why it needs to get done The Ruby plugin allows specifying a version of Ruby but always grabs the latest version of the bundler. The bundler requires a minimum version of Ruby, so previously building snaps can fail to build due to an unpinned version of the bundler. Source: https://github.com/canonical/snapcraft/pull/4954#discussion_r1717253485

Evaluation history

Date Model Scores Action Summary
stealth/space-bunny-alpha
Impact: 40
Quick Win: 22
Complexity: 30
Confidence: 87
Actionability: 79
keep open Triaged enhancement to pin Bundler in the core18 Ruby plugin; no fix is present, and the newer craft-parts Ruby plugin still installs Bundler without a version constraint.
qwen/qwen3.6-35b-a3b
Impact: 35
Quick Win: 20
Complexity: 30
Confidence: 85
Actionability: 80
keep open Feature request to add a bundler-version property to the Ruby plugin so users can pin bundler versions and avoid build failures from incompatible bundler upgrades.
qwen/qwen3.8-27b
Impact: 45
Quick Win: 27
Staleness: 75
Complexity: 40
Confidence: 70
Support Request: 10
keep open Feature request to add a `bundler-version` property to the `core18` Ruby plugin to pin bundler versions and prevent build failures due to unpinned bundler requiring newer Ruby. Issue is triaged (Status: Triaged, Type: Enhancement) with an internal Jira ticket created (CRAFT-3234). No implementation found in current codebase.
qwen/qwen3.6-35b-a3b
Staleness: 65
Complexity: 30
Confidence: 85
Support Request: 0
keep open Enhancement to add a `bundler-version` property to the `core18` Ruby plugin to pin bundler versions and prevent build failures.
qwen3.6-35b-a3b-mtp-q6
Staleness: 90
Complexity: 25
Confidence: 85
Support Request: 10
close stale Enhancement to add a bundler-version property to the core18 Ruby plugin, preventing build failures from version mismatches. Currently triaged but inactive for over a year.

Update history

No update history recorded yet.

Related work

  • Related To: canonical/snapcraft#4954 (confidence 99%)

    The request cites the review discussion in this PR as the source of the identified plugin limitation.

Related issues

No related issues found above the similarity threshold.