Runtime bundled-library drift
Ruby 3.4 nkf bundled gem default gem removed nkf
Japanese text normalization fails after the runtime upgrade while core tests pass.
Agent Quick Fix
Repair against the current Ruby 3.4 contract, then keep the change narrow and source-backed.
Product: Ruby 3.4
Current-contract area: `nkf` unavailable in a locale conversion path
Likely root cause: Japanese text normalization fails after the runtime upgrade while core tests pass.
Repair direction: Verifier checks an explicit dependency or supported replacement and a clean install.Symptom
Japanese text normalization fails after the runtime upgrade while core tests pass.
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.
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 nkf bundled gem default gem removed nkf
site:stdgems.org nkf Ruby 3.4 default bundled
ruby 3.4.0 NEWS bundled gems nkf
Ruby 3.4 NEWS default gems bundled gems
https://docs.ruby-lang.org/en/master/NEWS/NEWS-3_4_0_md.html
'nkf' in https://docs.ruby-lang.org/en/master/NEWS/NEWS-3_4_0_md.html