I add tspline import lib to this https://developer.blender.org/D6807. which tessellate tspline to tri-mesh.
The origin soc-2014-nurbs code have three separate parts:
1,import 3dm use opennurbs lib
2,refactor Blender nurbs code base to support trimmed nurbs
3,add uv editor support add trim curve
these codes have some funtion but not completely ready for production.
there need a plan to still develop nurbs. like which base line should blender nurbs function support on base code, how to develop tools for artists use these nurbs function etc.
I hounting some bugs form the origin code ,but didn’t handle the old draw code in uv editor, in my opinion ,blender’s uv editor should update heavily,there will be another story.