[Haskell-cafe] impoosible dependencies

[Albert Y. C. Lai]

On 11-04-20 05:51 PM, Kevin Quick wrote:
> cabal: dependencies conflict: ghc-6.12.3 requires unix ==2.4.0.2 however
> unix-2.4.0.2 was excluded because ghc-6.12.3 requires unix ==2.4.1.0

[and later]

> cabal: dependencies conflict: ghc-6.12.3 requires array ==0.3.0.2 however
> array-0.3.0.2 was excluded because ghc-6.12.3 requires array ==0.3.0.1

This no longer points to a hakyll problem, not even a cabal problem per 
se. This is a problem with package inconsistencies you already have; 
cabal merely does garbage-in garbage-out.

The output of "ghc -v" will display wonders.

The output of "ghc-pkg list -v" will also be of help.

If you are interested in not treating package databases as a black box 
plug-and-play appliance that "just works" (clearly, it doesn't), see my
http://www.vex.net/~trebla/haskell/sicp.xhtml