[Haskell-cafe] HaskellDB-HDBC-PostgreSQL installation problem

Hello Community, I have a problem installing the HaskellDB-HDBC-PostgreSQL package with cabal. I'm using Haskell Platform in Windows and I tried to install this package, but there was the error "could not find pq library". So I tried to install libpq wich includes pq but there was another error: "this package needs a unix installation". Is there any way to install pq on Windows or get the HaskellDB-HDBC-PostgreSQL in another way? Thanks for your advice Johannes Reiher