[Haskell-cafe] haskell platform questions

Warren Harris warrensomebody at gmail.com
Mon Mar 22 00:02:24 EDT 2010

I downloaded the new haskell-platform-2010.1.0.0-i386.dmg today... ran  
the uninstaller, ghc installer and the platform installer. When I run  
ghci, it seems to work fine, but when I try cabal, I get this crash:

$ cabal --version
dyld: unknown required load command 0x80000022
Trace/BPT trap

Any suggestions? (I'm on 10.5.8). Maybe I'll try the macport install  
process instead.

Thanks for your help,


On Mar 18, 2010, at 9:26 AM, John Velman wrote:

> I'm also on Mac Leopard.  I tried installing ghc 6.12 with Haskell
> Platform 2009.2.9.2-i386.dmg (ghc 6.10.4) for some reason, and ran  
> into
> a bunch of problems (problems to me, anyway).  I ended up  
> uninstalling 6.12
> and reinstalling haskell platform.  Uninstall is easy, there is an
> uninstaller script in /Library/Frameworks/GHC.framework/Tools.
> (strangely, not in ..Frameworks/HaskellPaltform.framework).
> I'm still using Leopard, but would like to move to Snow Leopard once  
> I get
> a few things out of the way.  But I see that there are (or were)  
> some tricks in
> getting ghc to work on OS X 10.6, apparently.  These seem to be well
> documented, but, I'd rather spend the time on my own projects.
> Best,
> John V.
> On Wed, Mar 17, 2010 at 09:07:03PM -0700, Warren Harris wrote:
>> I installed haskell platform some time ago, and now I'm wondering  
>> what
>> version I have. How do I find out?
>> Also, when the new one comes along on the 21st, is there a way to  
>> upgrade?
>> Or if I must first uninstall the one I have now, how do I uninstall  
>> it?
>> Is it recommended to periodically upgrade packages that came with the
>> platform (cabal upgrade), or is it recommended that they be left  
>> alone to
>> avoid dependency incompatibilities. Similar question for ghc itself  
>> --
>> can/should it be upgraded in the context of haskell platform?  (I was
>> hoping to try Leksah, but it dies without ghc 6.12.1. I seem to have
>> 6.10.4.)
>> Apologies in advance if this is all documented somewhere, but I  
>> couldn't
>> find it on the haskell platform site/trac. BTW, I'm on Mac/Leopard  
>> -- love
>> the fact that it didn't take hours to build everything!
>> Warren
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