It's a well thought out config for Emacs. A layer is just a list of use package statements with some config to make it work with the leader concept and vim bind

It's a well thought out config for Emacs. A layer is just a list of use package statements with some config to make it work with the leader concept and vim bindings if that's set. You can still install Melpa packages quite easily and you can still bind keys however you want. It's still Emacs.