[Haskell-cafe] Ambiguous module name `System.Directory'

Hi, i am using ghc version 7.0.3 and a pretty recent version of the haskell-platform. Whenever i use the System.Directory module, i run into this conflict: Ambiguous module name `System.Directory': it was found in multiple packages: system-fileio-0.2.1 directory-1.1.0.0 How can i resolve this conflict permamently (i know about :set -hide-package ... )? And shouldn't there be a rule in the haskell platform which forbids modules of the same name? Greetings Chris