/usr/share/common-lisp/systems/zpb-ttf.asd is in cl-zpb-ttf 0.7-2.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/common-lisp/systems/../source/zpb-ttf/zpb-ttf.asd
/usr/share/common-lisp/systems/../source/zpb-ttf/zpb-ttf.asd