My working installation of Sage 9-7 (built from source) on Debian Sid
stopped working. I thought it was due to the recent transition to Python
3.11 (or some other change in Sid). So, I tried to build it again from
source, but it fails.
Here is the last messages before it stops:
[sagelib-9.7]
When doing numérical computations, you must use RDF floats, except for
very special purpose. RDF is your processor's float. The default Real
Field, based on MPFR (which by default as the same precision as RDF) is
slow as it is based on MPFR, a very good library, but MPFR is a software
based li
