hslogger

Versatile logging framework

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

LTS Haskell 24.2:	1.3.1.2
Stackage Nightly 2025-08-05:	1.3.1.2
Latest on Hackage:	1.3.1.2

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-1.3.1.2@sha256:285c230fdea10961b0777ad4c08b6bf29527033c0ea8ca7426ac6357423ae045,2957

Module documentation for 1.3.1.2

System
- System.Log

Depends on 9 packages(full list with versions):

base, bytestring, containers, deepseq, network, network-bsd, old-locale, time, unix

Used by 8 packages in lts-23.19(full list with versions):

dbus-hslogger, gtk-sni-tray, gtk-strut, happstack-server, happstack-server-tls, MissingH, nvim-hs, status-notifier-item

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

1.3.1.2

2025-03-11, Andreas Abel

Thoroughly drop support for GHC 7
Allow newer containers
Tested with GHC 8.0 - 9.12.1

1.3.1.1

2024-04-15, Andreas Abel

Drop support for GHC 7
Tested with GHC 8.0 - 9.10

1.3.1.0

2019-10-07, Herbert Valerio Riedel

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

2019-04-15, Herbert Valerio Riedel

[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