Runtime bundled-library drift
Ruby 3.4 bigdecimal default gem bundled gem LoadError cannot load such file bigdecimal
Money or serialization code raises LoadError after the runtime image upgrade.
Agent Quick Fix
A library was historically part of the default runtime install but is now only bundled/optional, so project dependency files may not mention it.
Product: Ruby 3.4
Current-contract area: `bigdecimal` missing from a minimal bundle
Likely root cause: Money or serialization code raises LoadError after the runtime image upgrade.
Repair direction: Verifier checks an explicit dependency or supported replacement and a clean install.Validation Status
Codex searched organically in the validation run. No no-web counterfactual is attached to this page yet.
Symptom
Money or serialization code raises LoadError after the runtime image upgrade.
Why This Happens
A library was historically part of the default runtime install but is now only bundled/optional, so project dependency files may not mention it.
Verification
Verifier checks an explicit dependency or supported replacement and a clean install.Common Wrong Fixes
- Changing local code without checking the current external contract.
- Retrying the same install, build, or API call with no version/source change.
- Applying a broad unsafe bypass when a narrow compatibility fix is available.
Codex Search Keywords
These are the search terms observed in a neutral Codex validation run for this failure shape.
Ruby 3.4 bigdecimal default gem bundled gem LoadError cannot load such file bigdecimal
site:stdgems.org Ruby 3.4 bigdecimal
Ruby 3.4.0 NEWS default gems bigdecimal
https://stdgems.org/3.4.0/