log package:ghc

A monad that allows logging of diagnostics.
Like logInfo but with SevOutput rather then SevInfo
Dump something
Log a dump message (not a dump file)
Logger flags
Test if a DumpFlag is set
Log something
Log a trace message
Test if verbosity is >= to the given value
Format diagnostics as JSON
Test if a DumpFlag is enabled
Dump directory
Dump flags
Normal dump path ("basename.")
Overriden dump path