#13795: :kind! is not expanding type synonyms anymore -------------------------------------+------------------------------------- Reporter: Hjulle | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: GHCi | Version: 8.0.2 Resolution: | Keywords: newcomer Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): Did `:kind!` ever expand synonyms? The user manual claims that it does, but I can see no evidence that it ever did. Do we want it to expand synonyms? I think probably yes. If so, the right spot is here in `TcRnDriver`: {{{ ; ty' <- if normalise then do { fam_envs <- tcGetFamInstEnvs ; let (_, ty') = normaliseType fam_envs Nominal ty ; return ty' } else return ty ; }}} After calling `normaliseType`, call `Type.expandTypeSynonyms`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13795#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler