conf package:opt-env-conf

Try to parse a configuration value at the given key. Multiple confs will be tried in order.
Like conf but with a custom Codec for parsing the value.
Like confWith but allows interpreting Null as a value other than "Not found".
A standard parser for defining which configuration file to load. This has no default value so you will have to combine it somehow.
Settings parsing for Haskell: command-line arguments, environment variables, and configuration values. Settings parsing for Haskell: command-line arguments, environment variables, and configuration values.
Prefix all confs with a given String.
Helper function for calling subConfig with toConfigCase.
subConfig_ s = subConfig (toConfigCase s)
Turn a string into config case for configuration value names Example: this-is-config-case
Like conf but ignores any subConf, subConf_, or subAll.
Like confWith but ignores any subConf, subConf_, or subAll.
Like confWith' but ignores any subConf, subConf_, or subAll.
Combine all Yaml config files that exist into a single combined config object.