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deriving-compat v0.5 Release Notes

Release Date: 2018-07-01 // almost 6 years ago
    • Backport the changes to GeneralizedNewtypeDeriving and DerivingVia code generation from Trac #15290.

    As a result, code generated by deriveGND or deriveVia now requires the InstanceSigs and ScopedTypeVariables language extensions. On the other hand, the generated code no longer requires the ImpredicativeTypes extension (unless any class methods use higher-rank types).

    • 👍 Allow building with containers-0.6 and template-haskell-2.14.