haskell-src-exts v1.12.0 Release Notes
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➕ Add extensions DoAndIfThenElse and NPlusKPatterns to Language.Haskell.Exts.Extensions.
👍 DoAndIfThenElse is now supported, at long last, making HSE compatible with Haskell2010
Introduce haskell98 and haskell2010 extension groups, exported from Language.Haskell.Exts.Extensions.
0️⃣ Backwards-incompatible change: default parse mode is now to use haskell2010, which means the following features are recognized by default: DoAndIfThenElse, PatternGuards, ForeignFunctionInterface, EmptyDataDecls. NPlusKPatterns is no longer recognized by default.
** 1.12.x