[cctbxbb] Is there a schedule for the python3 migration or can cctbx.python already be built to be/use a python3 interpreter?

Cheers, I'm getting more and more concerned with the state of cctbx and the impending removal of python2 from quite a lot of major linux distributions in the near future. So far I have not managed to find documentation on how to build the cctbx to then use a python3 interpreter for the cctbx.python script, but I would really like to have this, as I'd have to check/port my code that's using cctbx modules (mostly smtbx and xrax) to python3 as well, so that it does not get obsoleted. So is it possible to build cctbx as a python3 module by now and if so how would one be able to do this? Thanks for your support Jan