[Haskell-cafe] Re: Completely confused by cabal
Colin Paul Adams
colin at colina.demon.co.uk
Sun Mar 22 08:37:53 EDT 2009
>>>>> "Andrea" == Andrea Vezzosi <sanzhiyan at gmail.com> writes:
Andrea> On Sun, Mar 22, 2009 at 12:51 PM, Colin Paul Adams
Andrea> <colin at colina.demon.co.uk> wrote:
>>>>>>> "Achim" == Achim Schneider <barsoap at web.de> writes:
>> Achim> Colin Paul Adams <colin at colina.demon.co.uk> 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:
Could not find module `Text.ParserCombinators.Parsec.Language':
it is a member of the hidden package `parsec-220.127.116.11'
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.
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