I decided to try on Max OS X (10.5). It seemed to get a bit further, but still no joy. Anyone have a suggestion? bash-3.2$ ghci GHCi, version 6.10.3: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer ... linking ... done. Loading package base ... linking ... done. Prelude> :m + Graphics.UI.Grapefruit.Circuit Prelude Graphics.UI.Grapefruit.Circuit> :m + Graphics.UI.Grapefruit.GTK Prelude Graphics.UI.Grapefruit.Circuit Graphics.UI.Grapefruit.GTK> :m + Examples.Grapefruit.Simple Prelude Graphics.UI.Grapefruit.Circuit Graphics.UI.Grapefruit.GTK Examples.Grapefruit.Simple> run GTK mainCircuit Loading package syb ... linking ... done. Loading package base-3.0.3.1 ... linking ... done. Loading package mtl-1.1.0.2 ... linking ... done. Loading package old-locale-1.0.0.1 ... linking ... done. Loading package old-time-1.0.0.2 ... linking ... done. Loading package random-1.0.0.1 ... linking ... done. Loading package QuickCheck-2.1.0.1 ... linking ... done. Loading package array-0.2.0.0 ... linking ... done. Loading package containers-0.2.0.1 ... linking ... done. Loading package bytestring-0.9.1.4 ... linking ... done. Loading package filepath-1.1.0.2 ... linking ... done. Loading package unix-2.3.2.0 ... linking ... done. Loading package directory-1.0.0.3 ... linking ... done. Loading package process-1.0.1.1 ... linking ... done. Loading package haskell98 ... linking ... done. Loading package glib-0.10.0 ... linking ... done. Loading package cairo-0.10.0 ... linking ... done. Loading package gtk-0.10.0 ... linking ... done. Loading package TypeCompose-0.6.4 ... linking ... done. Loading package lazysmallcheck-0.3 ... linking ... done. Loading package Stream-0.3.1 ... linking ... done. Loading package arrows-0.4.1.1 ... linking ... done. Loading package grapefruit-frp-0.0.0.0 ... linking ... done. Loading package packedstring-0.1.0.1 ... linking ... done. Loading package pretty-1.0.1.0 ... linking ... done. Loading package template-haskell ... linking ... done. Loading package type-level-0.2.2 ... linking ... done. Loading package type-equality-check-0.0.0.0 ... linking ... done. Loading package grapefruit-records-0.0.0.0 ... linking ... done. Loading package grapefruit-ui-0.0.0.0 ... linking ... done. Loading package grapefruit-examples-0.0.0.0 ... linking ... done. Loading package grapefruit-ui-gtk-0.0.0.0 ... linking ... done. *** Exception: Cannot initialize GUI. At 3:58 PM -0400 5/23/09, Dean Herington wrote:

I'm trying to give Grapefruit a try. I installed it as described in section 4.1 of http://www.haskell.org/haskellwiki/Grapefruit. When I tried to run the Simple.hs example, I got the problem shown below. Any ideas?

My machine is running Windows XP Pro 2002 SP3.

TIA Dean

GHCi, version 6.10.1: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim ... linking ... done. Loading package integer ... linking ... done. Loading package base ... linking ... done. Prelude> :m + Graphics.UI.Grapefruit.Circuit Prelude Graphics.UI.Grapefruit.Circuit> :m + Graphics.UI.Grapefruit.GTK Prelude Graphics.UI.Grapefruit.Circuit Graphics.UI.Grapefruit.GTK> :m + Examples.Grapefruit.Simple Prelude Graphics.UI.Grapefruit.Circuit Graphics.UI.Grapefruit.GTK Examples.Grapefruit.Simple> run GTK mainCircuit Loading package syb ... linking ... done. Loading package base-3.0.3.0 ... linking ... done. Loading package array-0.2.0.0 ... linking ... done. Loading package containers-0.2.0.0 ... linking ... done. Loading package bytestring-0.9.1.4 ... linking ... done. Loading package old-locale-1.0.0.1 ... linking ... done. Loading package old-time-1.0.0.1 ... linking ... done. Loading package random-1.0.0.1 ... linking ... done. Loading package Win32-2.2.0.0 ... linking ... done. Loading package filepath-1.1.0.1 ... linking ... done. Loading package directory-1.0.0.2 ... linking ... done. Loading package process-1.0.1.0 ... linking ... done. Loading package haskell98 ... linking ... done. Loading package mtl-1.1.0.2 ... linking ... done. Loading package glib-0.10.0 ... can't load .so/.DLL for: intl (addDLL: could not load DLL)

GHCi, version 6.10.1: http://www.haskell.org/ghc/ :? for help ... cut ... Loading package mtl-1.1.0.2 ... linking ... done. Loading package glib-0.10.0 ... can't load .so/.DLL for: intl (addDLL: could not load DLL) Ok, I do not use windows more than a year now exactly because of

Dean Herington wrote: problems like these, but this bug was often because of incorrect or missing value in extra-ghci-libraries attribute. Run this: ghc-pkg describe glib and then check whether attribute extra-ghci-libraries contains something sensible. Now, I do not know what it needs to be exactly now (do not use windows any more so I cannot look it up) but I recall that I was adding value libcairo-2 to extra-ghci-libraries for the cairo package. The point is that the dll name containing the C implementation of the given package must correspond to the string in extra-ghci-libraries. IIRC, sometimes, I was also adding the path to the library (something like -L<path>) in ld-option attribute. But that was probably for compiling and not for ghci. Hope it helps, Peter.