[Haskell-cafe] Debug tracing in Haskell

MarLinn monkleyon at googlemail.com
Tue Nov 22 14:38:27 UTC 2016

This sounds an awful lot like a different name for what monad-logger offers.

+ uses Template Haskell for decoupling and to add source positions
+ used in Yesod so probably well maintained
+ the underlying fast-logger was optimized for performance, including in 
concurrent production environments

- only usable in monadic contexts
- I haven't found a better documentation than looking at how its used in 
Yesod source code

* The package is from the Yesod/Stack corner of our world, so depending 
on your political viewpoint this can be anything from a bonus to a 
deal-breaker ;-)

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