/usr/ is in cl-sql-mysql 6.1.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/cl-sql-mysql/
/usr/share/doc/cl-sql-mysql/copyright
/usr/share/common-lisp/
/usr/share/common-lisp/systems/
/usr/share/common-lisp/source/
/usr/share/common-lisp/source/clsql-mysql/
/usr/share/common-lisp/source/clsql-mysql/clsql-mysql.asd
/usr/share/common-lisp/source/clsql-mysql/db-mysql/
/usr/share/common-lisp/source/clsql-mysql/db-mysql/mysql-objects.lisp
/usr/share/common-lisp/source/clsql-mysql/db-mysql/clsql_mysql.c
/usr/share/common-lisp/source/clsql-mysql/db-mysql/mysql-api.lisp
/usr/share/common-lisp/source/clsql-mysql/db-mysql/mysql-loader.lisp
/usr/share/common-lisp/source/clsql-mysql/db-mysql/mysql-client-info.lisp
/usr/share/common-lisp/source/clsql-mysql/db-mysql/mysql-package.lisp
/usr/share/common-lisp/source/clsql-mysql/db-mysql/mysql-sql.lisp
/usr/lib/
/usr/lib/clsql/
/usr/lib/clsql/clsql_mysql64.so
/usr/share/doc/cl-sql-mysql/changelog.Debian.gz