Pretty printers and exporters for Configs from the configurator library, in Data.Configurator. All results are intended to be valid parsing files in the configuration file syntax of the library. For a full round trip: This should load the config file, parse it, and then re-export it, rewriting the original config file. The result should be an identical configuration file (with keys potentially re-arranged and re-sorted, comments removed, etc.) See the Data.Configurator.Export module for more details and ways to modify the output style.