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1. 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.

2. DerivErrBootFileFound :: DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

   No documentation available.

3. DerivErrCannotEtaReduceEnough :: Bool -> DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

   No documentation available.

4. DerivErrDataConsNotAllInScope :: TyCon -> DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

   No documentation available.

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

   ghc	GHC.Tc.Errors.Types

   No documentation available.

6. DerivErrDunnoHowToDeriveForType :: Type -> DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

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

7. 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.

8. DerivErrGNDUsedOnData :: DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

   We cannot use GND on non-newtype types

9. DerivErrGenerics :: [DeriveGenericsErrReason] -> DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

   We couldn't derive a Generic instance for the given type for a variety of reasons

10. DerivErrGenericsMustBeVanillaDataCon :: DataCon -> DeriveGenericsErrReason

    ghc	GHC.Tc.Errors.Types

    The data constructor must be a vanilla constructor.

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