MIT licensed by Michael Snoyman
This version can be pinned in stack with:monad-logger-0.3.42@sha256:a0439d36e81b16773323db52df45be1d3058d7e14455db82cc2bd0609e1f16f4,1679
Module documentation for 0.3.42
Depends on 19 packages
(full list with versions):
base,
bytestring,
conduit,
conduit-extra,
exceptions,
fast-logger,
lifted-base,
monad-control,
monad-loops,
mtl,
resourcet,
stm,
stm-chans,
template-haskell,
text,
transformers,
transformers-base,
transformers-compat,
unliftio-core Used by 34 packages in
nightly-2025-10-31(full list with versions):
async-refresh,
async-refresh-tokens,
crdt-event-fold,
esqueleto,
fsnotify,
haskoin-node,
haskoin-store,
inf-backprop,
json-rpc,
keter,
monad-logger-aeson,
monad-logger-extras,
monad-logger-json,
monad-logger-logstash,
monad-logger-syslog,
om-fail,
om-fork,
om-logging,
persistent,
persistent-mtl,
persistent-postgresql,
persistent-sqlite,
persistent-test,
persistent-typed-db,
rio-orphans,
sandwich,
sandwich-contexts,
sandwich-slack,
sandwich-webdriver,
sydtest-persistent-sqlite,
urlpath,
webdriver,
yesod,
yesod-core monad-logger
A monad transformer approach for logging.
This package provides Template Haskell functions for determining source code locations of messages.
ChangeLog for monad-logger
0.3.42
- Forward compatibility with
-Wnoncanonical-monad-instances becoming an error
0.3.41
- Add
MonadAccum instances for LoggingT and NoLoggingT
0.3.40
- Relax
fast-logger upper bound from 3.2 to 3.3
- Add
Alternative instances for LoggingT and NoLoggingT
0.3.39
- Make the previous change backwards compatible with CPP
0.3.38
- Drop old deprecated instances to support transformers 0.6 #39
0.3.37
- Add
Semigroup/Monoid instances to LoggingT, NoLoggingT, and WriterLoggingT
0.3.36
- Export the
defaultOutput function, useful for defining custom instances of MonadLogger. #29
0.3.35
- Add Hackage status badge
- Document
Loc #26
0.3.34
- Fix build for lts-9 resolver
0.3.33
- Export
LogLine type synonym.
0.3.32
- Compat with
unliftio-core 0.2
0.3.31
- Re-export
fromLogStr to make implementing custom instances more convenient.
#14
0.3.30
- Added
MonadFail instances for LoggingT and NoLoggingT.
0.3.29
- Export mapLoggingT and mapNoLoggingT
0.3.28.5
0.3.28.4
0.3.28.3
- Compat for older GHCs #161
0.3.28.2
- Support for exceptions 0.9 and 0.10 #158
- Drop blaze-builder dependency
0.3.28.1
- Fix support for GHC 7.8 #154
0.3.28
- Added
WriterLoggingT for collecting log lines and help with testing
0.3.27
- Drop backwards compat with older library versions
0.3.26
- Add
MonadUnliftIO instances
0.3.25.1
- Fix some incorrect
@since comments
0.3.25
- Export all CallStack log functions #143
0.3.24
- Added
MonadReader instance for NoLoggingT.
0.3.23
- Changed
runFileLoggingT buffering to line buffering.
- Added
defaultLog and logWithoutLoc to list of exported functions.
0.3.22
0.3.21
- Reimplemented Functor & Applicative for LoggingT & NoLoggingT #125 #126
0.3.20.2
0.3.20.1
- Fix #106 by correcting the default signature for MonadLoggerIO #108
0.3.20
- Generalize the type of
unChanLoggingT
#104
0.3.19
- Add CallStack-based functions and
Control.Monad.Logger.CallStack module
0.3.18
- Added logTHShow and logDebugSH, logInfoSH, etc. Accepts an argument of
Show a => a instead of just Text.
0.3.17
0.3.16
- Provide default monadLoggerLog implementation #72
0.3.15
- Expose Loc constructor #70
0.3.14
- Don’t include source location for defaultLoc #69
0.3.13.1
0.3.13
- Re-export LogStr from fast-logger #56
- Added
filterLogger
0.3.12
- Use transformers-compat to provide universal ExceptT support #53
0.3.11.1
Add support for monad-control 1.0 #52
0.3.11
Add missing MonadState and MonadWriter instances for NoLoggingT #51
0.3.10.1
Remove unnecessary extra newline in log messages.
0.3.10
Introduce the MonadLoggerIO typeclass.
0.3.9
Add missing MonadError NoLoggingT instance #49
0.3.8
Simplify constraint on MonadLogger (NoLoggingT m) from MonadIO m to Monad m Github issue #48.
