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

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"Andrea" == Andrea Vezzosi writes:

Andrea> On Sun, Mar 22, 2009 at 12:51 PM, Colin Paul Adams Andrea> wrote: >>>>>>> "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. Andrea> when cabal is invoked by root, like in su -c "cabal ..." Andrea> or su -c "runghc Setup ...", it won't see the user Andrea> packagedb, but there's rarely a reason to do so. Usually Andrea> only the install phase needs to be done as root, while Andrea> building and configuring can be done as user. For ghc Andrea> you'd want to run ./configure and make as user and make Andrea> install as root. For normal packages, if you want to Andrea> install them system wide, you'd use something like cabal Andrea> install --global --root-cmd=sudo foo OK. I did: cabal install parsec --global --root-cmd=sudo and now when I try to make ghc I get: verify/SimplIface.lhs:16:7: Could not find module `Text.ParserCombinators.Parsec.Language': it is a member of the hidden package `parsec-2.1.0.1' Use -v to see a list of the files searched for. so I've managed to get parsec installed. Now I think I have to add it to a .cabal file somewhere. verify is a directory I added as a sub-directory of compiler, so i tried adding the following line to compiler/ghc.cabal: Build-Depends: parsec >= 2 && < 3 but it made no difference. -- Colin Adams Preston Lancashire