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Re: [Haskell-cafe] Why cabal forces reinstallation of happstack-utils?

Subject: Re: [Haskell-cafe] Why cabal forces reinstallation of happstack-utils?
From: Jeremy Shaw
Date: Tue, 4 May 2010 18:26:52 -0500
Hello,

Seems that happstack-util had an artificially low upper bounds. I just uploaded happstack-util 0.5.0.1 which bumps it to parsec < 4.

Make sure that your version of the 'network' library is compiled against parsec 3, since happstack-server depends on both network and parsec.

Thanks for your report!
- jeremy

On May 4, 2010, at 5:55 PM, Maciej Piechotka wrote:

I try to configure happstack with parsec 3.1. It seems to fail due to
cabal:


I installed happstack-util editing happstack-util.cabal by hand:
% grep parsec
~/.ghc/x86_64-linux-6.12.2/package.conf.d/happstack- util-0.5.0-6e27d5d3ba1c07f259d463ee3036c92b.conf
        parsec-3.1.0-5842597f447f82b210228391f371cff1
% cabal install --constraint 'parsec > 3' --dry-run
happstack
Resolving dependencies...
cabal: cannot configure happstack-util-0.5.0. It requires parsec <3
For the dependency on parsec <3 there are these packages: parsec-2.0,
parsec-2.1.0.0 and parsec-2.1.0.1. However none of them are available.
parsec-2.0 was excluded because of the top level dependency parsec >3
parsec-2.1.0.0 was excluded because of the top level dependency parsec
3
parsec-2.1.0.1 was excluded because of the top level dependency parsec
3
% ghc-pkg list | grep happstack-util
   happstack-util-0.5.0

Regards
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