I just find it interesting that back in 2010, when I did a review of existing open source navigation apps before starting to work on modRana, the Navit configuration files were a total mess and the default configuration was unusable (blank map). Sure, after manually fiddling with the humongous XML configuration file for long enough you could usually make it display something on the screen. I would really not expect back then the situation to stay the same 5 years later.