Sage 4.0 on Solari 10 build notes
Sage pre-4.0.alpha0
The symmetrica issues have been fixed. Two doctest failures, both with either proposed fix or patch left:
sage -t -long devel/sage/sage/rings/tests.py # 0 doctests failed
sage -t -long devel/sage/sage/interfaces/singular.py # 1 doctests failed