concurrent-output

Ungarble output from several threads or commands

Version on this page:	1.7.1
LTS Haskell 24.22:	1.10.21
Stackage Nightly 2025-12-04:	1.10.21
Latest on Hackage:	1.10.21

See all snapshots concurrent-output appears in

BSD-2-Clause licensed by Joey Hess, Joachim Breitner

Maintained by Joey Hess

This version can be pinned in stack with:concurrent-output-1.7.1@sha256:b3ac32cf37913bab5324b3fdbcd1e55035ea81554a4a55c73d5425cf4eb96be5,1659

Module documentation for 1.7.1

System
- System.Console
  - System.Console.Concurrent
    - System.Console.Concurrent.Internal
  - System.Console.Regions

Depends on 11 packages(full list with versions):

ansi-terminal, async, base, directory, exceptions, process, stm, terminal-size, text, transformers, unix

Used by 1 package in nightly-2015-11-21(full list with versions):

git-annex

Lets multiple threads and external processes concurrently output to the console, without it getting all garbled up.

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 by concurrent threads. Can be used for progress displays etc.