The version of cabal-dev on Hackage doesn't work with recent versions of Haskell due to https://github.com/creswick/cabal-dev/issues/74 - You have to install from a recent git checkout.
These instructions were done on Mac but should be straightforward enough to do the same on Windows: http://bob.ippoli.to/archives/2013/01/11/getting-started-with-haskell/#install-cabal-dev On Tue, Feb 12, 2013 at 2:45 AM, David Turner <[email protected]> wrote: > Hi, > > From a clean install of Haskell Platform 2012.4.0.0 (on Windows) I have > issued just: > > > cabal update > > cabal install cabal-install > > cabal install cabal-dev > > The last command fails with: > > Resolving dependencies... > In order, the following would be installed: > tar-0.3.2.0 (new package) > transformers-0.2.2.0 (new version) > mtl-2.0.1.0 (new version) > parsec-3.1.3 (reinstall) changes: mtl-2.1.2 -> 2.0.1.0 > network-2.3.2.0 (new version) > HTTP-4000.2.8 (new version) > cabal-dev-0.9.1 (new package) > cabal: The following packages are likely to be broken by the reinstalls: > network-2.3.1.0 > haskell-platform-2012.4.0.0 > cgi-3001.1.7.4 > HTTP-4000.2.5 > Use --force-reinstalls if you want to install anyway. > > > I *think* the problem is that cabal-dev has these dependencies: > > mtl >= 1.1 && < 2.1, > transformers >= 0.2 && < 0.3, > > where the latest version of mtl and transformers are 2.1.2 and 0.3 > respectively. At least, if I download the latest cabal-dev package and > relax those upper bounds I can get it to install. > > The irony is, of course, that I'm trying to install cabal-dev to get me > out of a totally unrelated dependencies hole! > > What should I do now? > > Cheers, > > -- > David Turner > Senior Consultant > Tracsis PLC > > Tracsis PLC is a company registered in > England and Wales with number 5019106. > > ______________________________**_________________ > Haskell-Cafe mailing list > [email protected] > http://www.haskell.org/**mailman/listinfo/haskell-cafe<http://www.haskell.org/mailman/listinfo/haskell-cafe> >
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