#10650: Can't define GHCi :def macro with NoImplicitPrelude on -------------------------------------+------------------------------------- Reporter: RyanGlScott | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: GHCi | Version: 7.10.1 Resolution: | Keywords: newcomer Operating System: Unknown/Multiple | Architecture: Type of failure: GHC rejects | Unknown/Multiple valid program | Test Case: Blocked By: | Blocking: Related Tickets: #8640 | Differential Revisions: -------------------------------------+------------------------------------- Changes (by rwbarton): * keywords: => newcomer Comment: These references to `String` and `IO` are from the expression that is built in `InteractiveUI.defineMacro`, see the comment: {{{ -- > ghciStepIO . definition :: String -> IO String }}} `RdrName` is a name that is not necessarily bound to a particular module. In this setting in ghci it only makes sense to use the `String` from the real `Prelude`. I'm not terribly familiar with this part of the compiler, but I imagine it is an easy local fix in `defineMacro`. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10650#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler