My god! Another ghci! Thanks for helping me find that. Re-running the Haskell Platform installer ends with an "Installation Failed," and I know enough to not start swapping out binaries in /opt/local/bin, so is there a best-practices way to fix this? Thank you Tom On 5/15/11, Mark Bestley wrote:

Tom Murphy wrote:

...

Hi all, Despite my best efforts, there are multiple versions of the Haskell Platform on my system.

I'm running Mac OSX, 10.6. I've installed the newest Haskell Platform, from its installer package.

In /Library/Frameworks/GHC.framework/Versions, there is only one folder: the latest. Previously, though, I had to delete by hand an older version of GHC in the Versions folder.

There are no Haskell or GHC folders in ~/Library.

When I run the ghci that's in the /Library/Frameworks/GHC.framework/Versions folder, it's the right version. Yet when I type "ghci" in the prompt, it gives me "GHCi, version 6.10.4"

Any help would be very appreciated! Tom

What does which ghci at the prompt show?

this is the actual binary - Haskell platform puts this in /usr/bin (which is not good as this is reserved for Apple's code and so could be deleted by a OS upgrade)

-- Mark

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Thank you! Everything is going smoothly now. Tom On 5/15/11, Mark Bestley wrote:

Tom Murphy wrote:

...

My god! Another ghci!

Thanks for helping me find that.

Re-running the Haskell Platform installer ends with an "Installation Failed," and I know enough to not start swapping out binaries in /opt/local/bin, so is there a best-practices way to fix this?

If the other is in /opt/local/bin then this is probably from Macports and so you need to remove it.

I had this issue and had to unintsll haskell and its varias ports

so

port uninstall x where x was haskell-platform, hs-platform-cabal , hs-platform-haskell-src and anyother hs*

If you dion't use macports for anything then see http://guide.macports.org/#installing.macports.uninstalling

-- Mark

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