#8776: Displaying pattern synonym for a GADT -------------------------------------+------------------------------------ Reporter: monoidal | Owner: cactus Type: bug | Status: merge Priority: normal | Milestone: Component: Compiler | Version: 7.7 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Comment (by simonpj): Gergo, it's all fine, but just needs a bit more refactoring: * `PprTyThing.pprTypeForUser` consults a flag `-fprint-explicit-foralls` to see whether to print the foralls. * So we should call `pprTypeForUser` when printing types in `IfaceDecls` (since we are now converting `TyThings` to `IfaceDecls` before printing. * That means moving `pprTypeForUser` to `IfaceSyn`; or perhaps even all the way into `TypeRep` with the other type-printing machinery. * Currently `pprTypeForUser` also tidies the type. That is not necessary (and therefore confusing) when printing `IfaceDecls` since they are already tidy. It is only necessary for the calls in `ghc/InteractiveUI` where we print un-tidy types and kinds. So we could do with a variant (even locally in `InteractiveUI` that tides the type and then calls `pprTypeForUser`, where the latter no longer does tidying). Does that make sense? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8776#comment:12 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler