Not working with Lineage OS (android 7.1) because /system is mounted in readonly mode

[knarf-hackatal2016]

I've instlaled the app through f-droid on a Lineage OS.

Is seems that the problem is that in lineage OS (and maybe in all android 7 systems ?) /system is mounted in readonly mode, so even with root access the app can't write.

Before the change the app should remount /system with write permission, then save the file, then (for security concern) remount it again in readonly mode.

[gilcu3]

I confirm the same happens with my nexus 5 on android 7.1.1

[androidacy-user]

#29 would resolve that especially as on some newer devices system can't be mounted rw