On Mon, 2008-06-02 at 09:42 -0700, Thomas Hartman wrote:
Can cabal install be made to work for this package? ***** thartman@thartman-laptop:~>sudo cabal install happs-hsp-template [sudo] password for thartman: cabal: internal error: could not construct a valid install plan. The proposed (invalid) plan contained the following problems: Package Cabal is required by several packages, but they require inconsistent versions: package ghc-6.8.2 requires Cabal-1.2.3.0 package plugins-1.2 requires Cabal-1.5.2
The package deps are not actually inconsistent, the problem is that the current cabal-install dependency resolution algorithm is completely naive and comes up with an invalid install plan. I'll let people know when the new dep resolver for cabal-install is ready (hopefully just a few days now). It should address this issue. Duncan