/usr/ is in cl-pg 1:20061216-5.
This file is owned by root:root, with mode 0o755.
..
/usr/share/common-lisp/systems/
/usr/share/common-lisp/source/
/usr/share/common-lisp/
/usr/share/
/usr/share/common-lisp/source/pg/
/usr/share/common-lisp/source/pg/cmucl-install-subsystem.lisp
/usr/share/common-lisp/source/pg/defpackage.lisp
/usr/share/common-lisp/source/pg/large-object.lisp
/usr/share/common-lisp/source/pg/lowlevel.lisp
/usr/share/common-lisp/source/pg/md5.lisp
/usr/share/common-lisp/source/pg/meta-queries.lisp
/usr/share/common-lisp/source/pg/parsers.lisp
/usr/share/common-lisp/source/pg/pg-tests.lisp
/usr/share/common-lisp/source/pg/pg.lisp
/usr/share/common-lisp/source/pg/stone-age-load.lisp
/usr/share/common-lisp/source/pg/sysdep.lisp
/usr/share/common-lisp/source/pg/utility.lisp
/usr/share/common-lisp/source/pg/v2-protocol.lisp
/usr/share/common-lisp/source/pg/v3-protocol.lisp
/usr/share/common-lisp/source/pg/pg.asd
/usr/share/doc/
/usr/share/doc/cl-pg/
/usr/share/doc/cl-pg/copyright
/usr/share/doc/cl-pg/changelog.gz
/usr/share/doc/cl-pg/changelog.Debian.gz
/usr/share/common-lisp/systems/pg.asd