Debian Sage Packaging Team (DSPT)
An effort to port SageMath to Debian was restarted in 2016, with a dedicated mailing list: debian-science-sagemath.
Regarding efforts to package Sage for various distributions, see Distribution.
For current linux installation instructions, see http://doc.sagemath.org/html/en/installation/source.html
An initial effort to port Sage to Debian took place in 2007--2009. To learn more about that, see the history of this page or consult revision 43.