Resolving dependencies... Downloading Win32-2.3.0.0... Configuring Win32-2.3.0.0... cabal: Missing dependencies on foreign libraries: * Missing (or bad) header file: HsWin32.h * Missing C libraries: user32, gdi32, winmm, advapi32, shell32, shfolder This problem can usually be solved by installing the system packages that provide these libraries (you may need the "-dev" versions). If the libraries are already installed but in a non-standard location then you can use the flags --extra-include-dirs= and --extra-lib-dirs= to specify where they are. If the header file does exist, it may contain errors that are caught by the C compiler at the preprocessing stage. In this case you can re-run configure with the verbosity flag -v3 to see the error messages. Failed to install Win32-2.3.0.0 cabal: Error: some packages failed to install: Win32-2.3.0.0 failed during the configure step. The exception was: ExitFailure 1