[Haskell-cafe] Solved: Re: How to cabal fetch mtl==

Iain Alexander ia at stryx.demon.co.uk
Fri Dec 3 00:49:03 CET 2010

On 2 Dec 2010 at 01:09:18, Iain Alexander wrote:

> So where's it getting the 6.4.1 ghc-pkg from?

It turns out that the only PATH-accessible copy of cabal[.exe] was in
.../ghc-6.4.1/bin, and it appears that cabal by default uses the versions of 
ghc and ghc-pkg in the same directory as itself.

Any attempt to install mtl-2 with ghc-6.4.1 is understandably doomed to 
failure, so given cabal-install's mission, I can see why even cabal fetch would 

The solution was to put a copy of cabal.exe in .../ghc-6.12.3/bin, and then 
everything went smoothly.
Iain Alexander      ia at stryx.demon.co.uk

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