Hi John, You don't have to compile hsc2hs yourself. It is part of the standard GHC installation. Cabal should be able to find it. You can check if it does by running runghc Setup.hs configure -v when configuring a package. Compiling network-2.2.0.0 against parsec-3.0.0 with msys/mingw worked fine for me. So if Cabal cannot find hsc2hs you could reinstall GHC or otherwise try to compile network-2.2.0.0 with msys. Regards, Felix