Fast JSON parsing and encoding (haskell/aeson). This workload narrows cabal.project to the text-iso8601 sub-package — that's where the QuarterOfYear bug lives. Bug fixes mined from upstream history; modern HEAD is the base, each patch reverse-applies a fix to install the original bug.
Per-property results
| Property | passed | failed | other | verdict |
|---|---|---|---|---|
QuarterOfYearCaseInsensitive | 0 | 40 | 0 | bug found |