hslogger

Versatile logging framework

https://github.com/haskell-hvr/hslogger/wiki

Version on this page:1.3.1.0@rev:6
LTS Haskell 24.28:1.3.2.0
Stackage Nightly 2026-01-19:1.3.2.0
Latest on Hackage:1.3.2.0

See all snapshots hslogger appears in

BSD-3-Clause licensed by John Goerzen
Maintained by https://github.com/haskell-hvr/hslogger
This version can be pinned in stack with:hslogger-1.3.1.0@sha256:c1b512c2ba106b57c811d493234677f740a643c2010bc698b6be4f430c953876,2966

Module documentation for 1.3.1.0

hslogger is a logging framework for Haskell, roughly similar to Python's logging module.

hslogger lets each log message have a priority and source be associated with it. The programmer can then define global handlers that route or filter messages based on the priority and source. hslogger also has a Syslog handler built in.

Changes

See also https://pvp.haskell.org/faq

1.3.1.0 (minor)

  • Evaluate message before taking lock in simple handler (#49)
  • Define Typeable, Data, Generic and NFData instances for System.Log.Priority (#43)

1.3.0.0 (major)

  • [semantic change] Messages are encoded as UTF-8 (previously the encoding was locale dependent) for the Syslog and Growl backends
  • Add support for network-3.0; remove redundant dependency on directory and process