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

[Maciej Piechotka]

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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