Hello! I've had some of the usual problems with packages depending on multiple versions of another package. It seems the root of the hole problem was that I once attempted to run cabal install cabal-install This brought in a number of older packages (Cabal-1.8.0.6, containers-0.3.0.0, directory-1.0.1.2, filepath-1.1.0.4, process-1.0.1.5) to my local package DB, which led to inconsistencies when trying to install new packages. However, if I run cabal install cabal-install-0.10.2 things work just fine. So the problem is that it wants to install an older version of cabal-install. A session demonstrating the problem is found below. Why doesn't cabal always install the latest packages? Thanks! / Emil [emax@laptop:~]> ghc --version The Glorious Glasgow Haskell Compilation System, version 7.0.2 [emax@laptop:~]> cabal --version cabal-install version 0.10.2 using version 1.10.1.0 of the Cabal library [emax@laptop:~]> cabal install cabal-install Resolving dependencies... Downloading containers-0.3.0.0... ... [emax@laptop:~]> cabal install cabal-install-0.10.2 Resolving dependencies... Configuring cabal-install-0.10.2... Preprocessing executables for cabal-install-0.10.2... Building cabal-install-0.10.2... ...