[Haskell-beginners] problems with wxHaskell installation

[Miguel Negrao]

Hi  Heinrich,

Thanks for helping out. Seems I’m really unlucky with cabal and wxHaskell...
A 28/05/2012, às 12:57, Heinrich Apfelmus escreveu:

> Miguel Negrao wrote:
>> I had wxHaskell working but since I installed the gtk2hs, which updated some packages I’m having some trouble. I’ve installed wxWidgets  and wxHaskell again following the instructions in it’s webpage.  When I compile a simple wxHaskell program* I get this error:
>> dyld: Symbol not found: _wxTheAssertHandler
>> Referenced from: /Users/miguelnegrao/Library/Haskell/ghc-7.0.4/lib/wxc-0.90.0.3/lib/libwxc.dylib
>> Expected in: /usr/local/lib/libwx_baseu-2.9.3.0.0.dylib
>> in /Users/miguelnegrao/Library/Haskell/ghc-7.0.4/lib/wxc-0.90.0.3/lib/libwxc.dylib
>> Trace/BPT trap: 5
>> How can I fix this ?
>> thank you,
>> Miguel Negrão
>> I’m on OSX 10.7.3 haskell platform with ghc 7.0.4
>> brew info wxmac
>> wxmac 2.8.12
>> http://www.wxwidgets.org
>> /usr/local/Cellar/wxmac/2.9.3.1 (764 files, 26M) *
>> Installed with: --devel
>> https://github.com/mxcl/homebrew/commits/master/Library/Formula/wxmac.rb
>> cabal info wx
>> * wx               (library)
>>   Synopsis:      wxHaskell
>>   Versions available: 0.11.1.0, 0.11.1.2, 0.12.1.4, 0.12.1.5, 0.12.1.6,
>>                       0.13.2, 0.13.2.1, 0.90, 0.90.0.1 (and 10 others)
>>   Versions installed: 0.13.1, 0.90
> 
> I don't really know what's going on, but there seem to be two potential issues:
> 
> * Your wx package has version 0.90 while your wxc package has version 0.90.0.3. I recommend to use the latest patch level releases of all three: wx, wxcore and wxc.

When I try to install wx after updating cabal it is failing on version 0.90.0.1:

miguelnegrao at Mac-Miguel:~$ cabal install wx
Resolving dependencies...
Configuring wx-0.90.0.1...
Preprocessing library wx-0.90.0.1...
Building wx-0.90.0.1...
[ 1 of 16] Compiling Graphics.UI.WX.Types ( src/Graphics/UI/WX/Types.hs, dist/build/Graphics/UI/WX/Types.o )
[ 2 of 16] Compiling Graphics.UI.WX.Attributes ( src/Graphics/UI/WX/Attributes.hs, dist/build/Graphics/UI/WX/Attributes.o )
[ 3 of 16] Compiling Graphics.UI.WX.Layout ( src/Graphics/UI/WX/Layout.hs, dist/build/Graphics/UI/WX/Layout.o )
[ 4 of 16] Compiling Graphics.UI.WX.Classes ( src/Graphics/UI/WX/Classes.hs, dist/build/Graphics/UI/WX/Classes.o )
[ 5 of 16] Compiling Graphics.UI.WX.Media ( src/Graphics/UI/WX/Media.hs, dist/build/Graphics/UI/WX/Media.o )
[ 6 of 16] Compiling Graphics.UI.WX.Events ( src/Graphics/UI/WX/Events.hs, dist/build/Graphics/UI/WX/Events.o )
[ 7 of 16] Compiling Graphics.UI.WX.Window ( src/Graphics/UI/WX/Window.hs, dist/build/Graphics/UI/WX/Window.o )

src/Graphics/UI/WX/Window.hs:134:52:
   Not in scope: `textCtrlChangeValue'
cabal: Error: some packages failed to install:
wx-0.90.0.1 failed during the building phase. The exception was:
ExitFailure 1

Does this mean that the package that was pushed to cabal has an actual error ? How do I "use the latest patch level releases” of the packages ? 

> 
> * Your wxWidgets (wxmax) version is reported both as 2.8.12 and 2.9.3.1

right. But that is because the current stable version is 2.8.12 and to use the latest version in homebrew I have to use the switch  --devel which will install 2.9.3.1. I followed the instructions here :http://www.haskell.org/haskellwiki/WxHaskell/MacOS_X

best,
Miguel