[Haskell-cafe] what if two package contains same module?

[Heinrich Apfelmus]

吴兴博 wrote:
> it seems that cabal install different into different folders.
> if two package contains same module name, can they all exist?
> since cabal have no "remvoe" or "uninstall". how can I hide some packages?

The  ghc-pkg  program organizes GHC's package database. You want to run 
the command

     ghc-pkg hide offending-package


Best regards,
Heinrich Apfelmus

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