Hoogle Search

Within LTS Haskell 24.52 (ghc-9.10.3)

Note that Stackage only displays results for the latest LTS and Nightly snapshot. Learn more.

Exact lookup

1. DerivErrGenerics :: [DeriveGenericsErrReason] -> DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

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

2. DerivErrGenericsMustBeVanillaDataCon :: DataCon -> DeriveGenericsErrReason

   ghc	GHC.Tc.Errors.Types

   The data constructor must be a vanilla constructor.

3. DerivErrGenericsMustHaveSomeTypeParams :: TyCon -> DeriveGenericsErrReason

   ghc	GHC.Tc.Errors.Types

   The type must have some type parameters. check (d) from Note [Requirements for deriving Generic and Rep] in GHC.Tc.Deriv.Generics.

4. DerivErrGenericsMustNotHaveDatatypeContext :: TyCon -> DeriveGenericsErrReason

   ghc	GHC.Tc.Errors.Types

   The type must not have some datatype context.

5. DerivErrGenericsMustNotHaveExistentials :: DataCon -> DeriveGenericsErrReason

   ghc	GHC.Tc.Errors.Types

   The data constructor must not have existential arguments.

6. DerivErrGenericsMustNotHaveExoticArgs :: DataCon -> DeriveGenericsErrReason

   ghc	GHC.Tc.Errors.Types

   The data constructor must not have exotic unlifted or polymorphic arguments.

7. DerivErrGenericsWrongArgKind :: DataCon -> DeriveGenericsErrReason

   ghc	GHC.Tc.Errors.Types

   The derivation applies a type to an argument involving the last parameter but the applied type is not of kind * -> *.

8. DerivErrHasAssociatedDatatypes :: HasAssociatedDataFamInsts -> AssociatedTyLastVarInKind -> AssociatedTyNotParamOverLastTyVar -> DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

   No documentation available.

9. DerivErrLangExtRequired :: Extension -> DeriveInstanceErrReason

   ghc	GHC.Tc.Errors.Types

   No documentation available.

10. DerivErrLastArgMustBeApp :: DeriveInstanceErrReason

    ghc	GHC.Tc.Errors.Types

    Last arg must be newtype or data application

Page 67 of many | Previous | Next