Resolving dependencies...
Downloading sfml-audio-0.7.1.1816...
Configuring sfml-audio-0.7.1.1816...
cabal: Missing dependencies on foreign libraries:
* Missing (or bad) header file: al.h
* Missing C libraries: openal, sndfile
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 sfml-audio-0.7.1.1816
cabal: Error: some packages failed to install:
sfml-audio-0.7.1.1816 failed during the configure step. The exception was:
ExitFailure 1