ANNOUNCE: GHC 7.0.1 Release Candidate 1
daniel.is.fischer at web.de
Mon Sep 27 07:31:52 EDT 2010
On Monday 27 September 2010 12:58:08, Christian Maeder wrote:
> I've tried to install HTTP (for cabal-install) and get the following
> Configuring HTTP-4000.0.9...
> Setup: At least the following dependencies are missing:
> base ==3.*
> What is the problem? The Build-depends of HTTP's cabal file look correct
> (and fulfilled):
> Build-depends: base >= 3, array, old-time, bytestring
> Cheers Christian
Probably it's the preferred versions on hackage:
-- A global set of preferred versions.
-- This is to indicate a current recommended version, to allow stable and
-- experimental versions to co-exist on hackage and to help transitions
-- between major API versions.
-- Tools like cabal-install take these preferences into account when
-- constructing install plans.
base < 4
parsec < 3
cabal-install < 0.10
Try installing it with --constraint="base >= 4" and if that doesn't
suffice, --preference="base >= 4".
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