You are talking as if there is no fine OS for servers aside from *BSD crap.
Repository : aur
Name : mit-scheme
Keywords : None
Version : 11.2-4
Description : MIT/GNU Scheme
URL : https://www.gnu.org/software/mit-scheme/
AUR URL : https://aur.archlinux.org/packages/mit-scheme
Only reason textboard.org uses FreeBSD is just because its admin wants to be a unique snowflake.