OpenAL is a minimalistic sound API that aims to provide bare features for spacialized audio. The API looks like the OpenGL one, thus the libs are pretty great together. Up to now, no OpenAL extension is supported. You’re highly invited to contribute.
You’ll need pkg-config in order to build.
For Ubuntu users: there’s a bug in the latest Ubuntu LTS, making the pkg-config files for OpenAL broken.
Consider using the following command to install:
cabal install al --extra-include-dirs=/usr/include/AL
Or whatever your install path is.