haskell@gentoo.org Gentoo Haskell Provides a simple interface for writing concurrent programs that need to output a lot of status messages to the console, or display multiple progress bars for different activities at the same time, or concurrently run external commands that output to the console. Built on top of that is a way of defining multiple output regions, which are automatically laid out on the screen and can be individually updated. Can be used for progress displays etc. <<https://joeyh.name/code/concurrent-output/demo2.gif>>