One other solution on this one: upgrade system-fileio. The newest version does not contain any conflicting names. As a side point, system-fileio (and system-filepath, which it depends upon) are both excellent packages, I use them all the time at work. Michael On Sat, Aug 27, 2011 at 12:44 AM, Albert Y. C. Lai wrote:

On 11-08-26 12:00 PM, informationen wrote:

...

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?

Two permanent resolutions, choose one:

ghc-pkg hide system-fileio

ghc-pkg unregister system-fileio

Haskell platform has never included system-fileio, so it contains no ambiguous module name.

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Note that once you upgrade it (to >=0.4), you'll still need to remove the older version to fix the error. I wish cabal-install defaulted to hiding every package it installs. The current behavior of exposing every installed module is unreasonable and confusing. Packages should be namespaces, not just installation aliases.