This repository is for LineageOS on Sony Xperia XZ1 Compact (lilac).
Links to prebuild ROMs can be found in the thread on XDA.
If you want to build it yourself please see the ReadMe in the lineageos_lilac repository.
There you can find a description of the preparation and build steps and some helper scripts which can be used as a starting point. However be aware that they may be specific to my personal setup and could need adjustments to work for you.