/usr/share/common-lisp/systems/salza2.asd is in cl-salza2 2.0.9-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/common-lisp/systems/../source/salza2/salza2.asd
/usr/share/common-lisp/systems/../source/salza2/salza2.asd