#7730: :info and polykinds --------------------------------------------+------------------------------ Reporter: monoidal | Owner: archblob Type: bug | Status: patch Priority: normal | Milestone: 7.10.1 Component: Compiler (Type checker) | Version: 7.6.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: #8776 --------------------------------------------+------------------------------ Comment (by Simon Peyton Jones <simonpj@…>): In [changeset:"b4856f9f4f0fb3db473901b247d3fa94a11c25a0/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="b4856f9f4f0fb3db473901b247d3fa94a11c25a0" Do pretty-printing of TyThings via IfaceDecl (Trac #7730) All the initial work on this was done fy 'archblob' (fcsernik@gmail.com); thank you! I reviewed the patch, started some tidying, up and then ended up in a huge swamp of changes, not all of which I can remember now. But: * To suppress kind arguments when we have -fno-print-explicit-kinds, - IfaceTyConApp argument types are in a tagged list IfaceTcArgs * To allow overloaded types to be printed with =>, add IfaceDFunTy to IfaceType. * When printing data/type family instances for the user, I've made them print out an informative RHS, which is a new feature. Thus ghci> info T data family T a data instance T Int = T1 Int Int data instance T Bool = T2 * In implementation terms, pprIfaceDecl has just one "context" argument, of type IfaceSyn.ShowSub, which says - How to print the binders of the decl see note [Printing IfaceDecl binders] in IfaceSyn - Which sub-comoponents (eg constructors) to print * Moved FastStringEnv from RnEnv to OccName It all took a ridiculously long time to do. But it's done! }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7730#comment:51> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler