Re: [Haskell-cafe] Re: Completely confused by cabal

On Sun, Mar 22, 2009 at 12:51 PM, Colin Paul Adams wrote:

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"Achim" == Achim Schneider writes:

   Achim> Colin Paul Adams wrote:    >> So why doesn't it find packages then, when they are installed?    >>    Achim> I've got no idea, what exactly are you trying to do, and    Achim> how?

I'm trying to re-compile ghc 6.11 and it doesn't find parsec.

when cabal is invoked by root, like in su -c "cabal ..." or su -c "runghc Setup ...", it won't see the user packagedb, but there's rarely a reason to do so. Usually only the install phase needs to be done as root, while building and configuring can be done as user. For ghc you'd want to run ./configure and make as user and make install as root. For normal packages, if you want to install them system wide, you'd use something like cabal install --global --root-cmd=sudo foo You can make those flags the default with user-install: False root-cmd: sudo in ~/.cabal/config If you still have problems it'd be interesting to see what are the initial commands that were failing in your attemt to build ghc-6.11.