ALSA

The Advanced Linux Sound Architecture is addressed by currently three different projects.

• The following three packages were derived from the alsa package below
  • alsa-core: Core ALSA functionality, currently only ALSA exceptions
  • alsa-pcm: audio signal input and output
  • alsa-seq: MIDI handling
• alsa: Complete ALSA support (audio signals and MIDI). The original darcs repository has been converted to a git repository, but there are some enhancements in another darcs repository
• alsa-midi: ALSA sequencer support (aka MIDI), darcs repository, old project page, note that this package is no longer supported in favor of the first mentioned package collection.

Related packages are

• midi-alsa: Conversion between data types of the alsa package and the midi package

Troubleshooting

If you get a message like

   Configuring alsa-core-0.5.0.1...
   Cabal-simple_mPHDZzAJ_2.2.0.1_ghc-8.4.3: The pkg-config package 'alsa' version
   >=1.0.14 is required but it could not be found.

then you need to install the alsa development packages. On Debian or Ubuntu, do `sudo apt install libasound2-dev`.