Hi all, I have been using a modularized sandbox project to test Log4j and optional dependencies are a nightmare.
Small example: if I use Log4j API in my project and I add: requires org.apache.logging.log4j; then when I run the app, the JVM will automatically add `log4j-api` to the boot layer. It will also add `log4j-core`, since it provides a service that `log4j-api` uses. However it will **not** load `jackson-datatype-yaml`, because it is an **optional** dependency of `log4j-core` and provides no services `log4j-core` is interested in. The user must go to the additional pain of specifying `--add-modules` or the application developer must add a bogus `requires` statement. Therefore I would propose to: * move the YAML configuration factory to a separate module and delete one of the JSON configuration factories (the one that uses Jackson). What do you think?
