[Haskell-cafe] Abstracting configuration directories

I'm writing a small utility whose only non-portable code involves the two paths, /etc/htsnrc $HOME/.htsnrc These have sort-of analogues under Windows; in .NET they are available through something like, Environment.SpecialFolder.CommonApplicationData Environment.SpecialFolder.ApplicationData I personally will only ever need to run on Linux, but as a matter of principle I'd like to abstract the paths. Is there a library that can do this already?