slackbuilds/haskell/haskell-fail

This package contains the Control.Monad.Fail module providing the MonadFail
class that became available in base-4.9.0.0 for older base package versions.

This package turns into an empty package when used with GHC versions which
already provide the Control.Monad.Fail module to make way for GHC's own
Control.Monad.Fail module.

After uninstalling, run this command to unregister the package from
the ghc package database:   ghc-pkg recache