Specs

load(config(), state()) :: config()

Loads configuration (typically during system boot).

It receives the current config and the state returned by init/1. Then, you typically read the extra configuration from an external source and merge it into the received config. Merging should be done with Config.Reader.merge/2, as it performs deep merge. It should return the updated config.

Note that load/2 is typically invoked very early in the boot process, therefore if you need to use an application in the provider, it is your responsibility to start it.