GhcT package:ghc-lib-parser

A monad transformer to add GHC specific features to another monad. Note that the wrapped monad must support IO and handling of exceptions.

A message from typecheck/renaming phase.

Extension constructor for Pat, added after typechecking.

See Note [NoGhcTc] in GHC.Hs.Extension. It has to be in this module because it is used like an extension point (in the data definitions of types that should be parameter-agnostic.