I'm trying to install the package directory from cygwin. I am a windows user and have tried to use "cabal install directory" from the windows prompt but that quickly gives an error about a missing tool. I'm using cygwin to install directory now. However I still get an error. The error is: * Missing header file: HsDirectory.h This problem can usually be solved by installing the system package that provides this library (you may need the "-dev" version). If the library is already installed but in a non-standard location then you can use the flags --extra-include-dirs= and --extra-lib-dirs= to specify where it is. I have searched for this file and found it in the "Haskell\directory1.0.1.0\include" folder. I googled the error and found something about adding #include to the file. The "HsDirectory.h" file already contains "#include ". What should I do? Many thanks, Remy.