android 7 AOSP keyboard gesture typing

On Lineageos 14.1 (microg edition) the gesture typing (swiping) input does not work anymore.

Reason:

• AOSP keyboard does not support it by default
• When using opengapps, the google swype libraries are installed by default - so this is why I had this feature on CyanogenMod 13
  • https://github.com/opengapps/opengapps/wiki/Advanced-Features-and-Options#skip-googles-swype-library-setting
• "Gesture typing will not work unless you are rooted and have libjni_latinimegoogle.so in /system/lib"
  • https://forum.xda-developers.com/showpost.php?p=66559871&postcount=5
• ??? How to get it back?