That's what https://github.com/rinigus/qmlrunner is for. It also has all options that are needed for flatpak distribution of Pure Maps and we can surely extend it as needed. Also, QML path can be extended as needed.
Nokia N900 1.3 on CSSU I got modrana 0.53.1 installed and running from the repositories. Works great except trying to route just gives me a "routing failed". I had an active data connection the entire time. I'm now trying to get offline routing working. The monav.openstreetmap.de site is down so I downloaded my state from data.modrana.org. The tar file was empty, however. It didn't create any directories. I tried the north-america_car.tar.gz as well. Empty. Tried with root too.
I guess I'll try to generate my own. It just seems like I'm either doing something wrong or nothing's working. Secondly, how again to update? I downloaded the 0.55.18 file, tar'd it, and ran the modrana.py script. modrana opened but info-about doesn't show a version. The icon in the app drawer still loads 0.53.1 too