This packages doesn't import any modules from the 'ghc' package. It does
import 'GHC.IO.Handle', but that is provided by the 'base' package.
Remove 'ghc' from build-depends.
Gentle ping -- this is causing me some trouble, because libraries that import both 'containers' and 'silently' fail to build on versions of GHC that have 'ghc' depend on 'containers':
$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 7.2.2
$ cabal-dev install containers
Preprocessing library containers-0.4.2.1...
$ cabal-dev instal package-that-depends-on-containers-and-silently
cabal: dependencies conflict: ghc-7.0.4 requires containers ==0.4.2.1 however
containers-0.4.2.1 was excluded because ghc-7.0.4 requires containers
Sorry I didn't get to it sooner, I've been super busy with a side project this week.
Could you please release this new version to Hackage?