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1. DerivErrBadConIsGADT :: DataCon -> DeriveInstanceBadConstructor

   ghc	GHC.Tc.Errors.Types

   The given DataCon is a GADT so we cannot directly derive an istance for it.

2. DerivErrBadConWrongArg :: DataCon -> DeriveInstanceBadConstructor

   ghc	GHC.Tc.Errors.Types

   The given DataCon must use the type variable only as the last argument of a data type

3. DerivErrBadConstructor :: !Maybe HasWildcard -> [DeriveInstanceBadConstructor] -> DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

   We couldn't derive an instance for a particular data constructor for a variety of reasons.

4. DerivErrBootFileFound :: DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

   No documentation available.

5. DerivErrCannotEtaReduceEnough :: Bool -> DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

   No documentation available.

6. DerivErrDataConsNotAllInScope :: TyCon -> DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

   No documentation available.

7. DerivErrDerivingViaWrongKind :: Kind -> Type -> Kind -> DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

   No documentation available.

8. DerivErrDunnoHowToDeriveForType :: Type -> DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

   GHC simply doesn't how to how derive the input Class for the given Type.

9. DerivErrEnumOrProduct :: DeriveInstanceErrReason -> DeriveInstanceErrReason -> DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

   We couldn't derive an instance either because the type was not an enum type or because it did have more than one constructor.

10. DerivErrGNDUsedOnData :: DeriveInstanceErrReason

    ghc	GHC.Tc.Errors.Types

    We cannot use GND on non-newtype types

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