The latest version of cabal-dev on Hackage does not seem to have had its dependencies updated for GHC 7.6. Try installing off github (https://github.com/creswick/cabal-dev).
Ian Sturdy ________________________________________ From: haskell-cafe-boun...@haskell.org [haskell-cafe-boun...@haskell.org] on behalf of Eric Velten de Melo [ericvm...@gmail.com] Sent: Tuesday, November 20, 2012 7:54 PM To: Johan Tibell Cc: Gregory Guthrie; haskell-cafe@haskell.org Subject: Re: [Haskell-cafe] cabal install... I have a dream of one day being able to install leksah without having to downgrade ghc. Right now I can't even install cabal-dev with cabal. It will break ghc if I do. 2012/11/20 Johan Tibell <johan.tib...@gmail.com>: > On Tue, Nov 20, 2012 at 1:10 PM, Gregory Guthrie <guth...@mum.edu> wrote: >> >> Hmm, >> >> Now when I tried to run Leksah, I get not only some broken packages (which >> I can avoid for my current project), but: >> >> >> >> <command line>: cannot satisfy -package-id >> base-4.5.1.0-7c83b96f47f23db63c42a56351dcb917: >> >> base-4.5.1.0-7c83b96f47f23db63c42a56351dcb917 is unusable due to >> missing or recursive dependencies: >> >> integer-gmp-0.4.0.0-c15e185526893c3119f809251aac8c5b >> >> (use -v for more information) >> >> >> >> So I tried to install base, then re-install it, but both fail; >> >> Any hints? > > > From this email and some of the previous emails it seems that your package > DB is in a pretty bad state, most likely from using --force-reinstalls. When > Cabal warns you that this will break stuff it actually means it. :) My > suggestion is that you > > rm -rf ~/.ghc/x86_64-linux-7.6.1 # or equivalent on your system. > > Then reinstall all the packages you want by listing them all at once > > cabal install pkg1 pkg2 pk3 > > By listing them all together cabal-install tries to come up with an install > plan that is globally consistent for all of them. > > -- Johan > > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe