I'm looking at logging and notice that there don't appear to be any
handlers other than the core ones.

Then I look at Dancer2::Logger::File and see these issues:

* log_path is documented but no code actually uses it

* holds an open file-handle.  No flush/reopen on a signal, so log
rotation means restarting the whole app

So what are people using Dancer2 actually doing for logging?  Just
Console grabbed by a supervisor daemon?