No necessity, just mere curiosity. I messed around with a few things including tinkering with your package for the Jolla 1, and manually installing supersu. I even tried kingroot (eww...). However, I haven't been able to get anywhere. The main thing I wanted was the f-droid privileged extension to ease auto-updating. However, i was able to install it without rooting alien by copying the apk to /opt/alien/system/priv-app, changing permissions, and using apkd-install.