The only documentation I can find about using the `:custom` keyword with use-package is "The :custom keyword allows customization of package custom variables."

I have no idea how to read that.

1. Can I do (recent-mode t)?
2. If I am to set a config option like dired-dwim-target to t do I write that: (dired-dwim-target t) or (setq dired-dwim-target t)?

#irreal and @bbatsov about #Emacs startup time: https://irreal.org/blog/?p=12903

I, too, am totally convinced that it really doesn't matter if it is one or sixty seconds.

However, if your bootup time is much longer than mine (15-30s once a week) then you most probably have room for improvement (if you want). Consistent use of #usepackage with dependencies and "defer" did help on my side.

My config has 7724 lines of #elisp (19851 including #orgmode comments): https://github.com/novoid/dot-emacs/blob/master/config.org

I'm thinking to replace #LeafEl with some other #Emacs configuration package like #UsePackage or #SetupEl. I need the package to be nestable, i.e. the following will work:

(config foo
...
(config bar
...))

What should I choose? (If you have any other suggestion, please reply.)