By default GHC builds applications that open a console window when they start.
If you want to build a GUI-only application, with no console window, use the flag
-optl-mwindows in the link step.
For some reason, Mingw ships with the
but not with the
readline headers. As a result, GHC (like Hugs) does not
readline for interactive input on Windows.
You can get a close simulation by using an emacs shell buffer!