/usr/share/common-lisp/source/ is in cl-clx-sbcl 0.7.4-5.
This file is owned by root:root, with mode 0o755.
..
/usr/share/common-lisp/source/clx/
/usr/share/common-lisp/source/clx/attributes.lisp
/usr/share/common-lisp/source/clx/big-requests.lisp
/usr/share/common-lisp/source/clx/buffer.lisp
/usr/share/common-lisp/source/clx/bufmac.lisp
/usr/share/common-lisp/source/clx/build-clx.lisp
/usr/share/common-lisp/source/clx/clx-module.lisp
/usr/share/common-lisp/source/clx/clx.asd
/usr/share/common-lisp/source/clx/clx.lisp
/usr/share/common-lisp/source/clx/cmudep.lisp
/usr/share/common-lisp/source/clx/debug/
/usr/share/common-lisp/source/clx/debug/debug.lisp
/usr/share/common-lisp/source/clx/debug/describe.lisp
/usr/share/common-lisp/source/clx/debug/event-test.lisp
/usr/share/common-lisp/source/clx/debug/keytrans.lisp
/usr/share/common-lisp/source/clx/debug/trace.lisp
/usr/share/common-lisp/source/clx/debug/util.lisp
/usr/share/common-lisp/source/clx/defsystem.lisp
/usr/share/common-lisp/source/clx/demo/
/usr/share/common-lisp/source/clx/demo/bezier.lisp
/usr/share/common-lisp/source/clx/demo/beziertest.lisp
/usr/share/common-lisp/source/clx/demo/clclock.lisp
/usr/share/common-lisp/source/clx/demo/clipboard.lisp
/usr/share/common-lisp/source/clx/demo/clx-demos.lisp
/usr/share/common-lisp/source/clx/demo/gl-test.lisp
/usr/share/common-lisp/source/clx/demo/hello.lisp
/usr/share/common-lisp/source/clx/demo/mandel.lisp
/usr/share/common-lisp/source/clx/demo/menu.lisp
/usr/share/common-lisp/source/clx/demo/zoid.lisp
/usr/share/common-lisp/source/clx/dep-allegro.lisp
/usr/share/common-lisp/source/clx/dep-openmcl.lisp
/usr/share/common-lisp/source/clx/depdefs.lisp
/usr/share/common-lisp/source/clx/dependent.lisp
/usr/share/common-lisp/source/clx/display.lisp
/usr/share/common-lisp/source/clx/dpms.lisp
/usr/share/common-lisp/source/clx/exclcmac.lisp
/usr/share/common-lisp/source/clx/excldefsys.lisp
/usr/share/common-lisp/source/clx/excldep.lisp
/usr/share/common-lisp/source/clx/fonts.lisp
/usr/share/common-lisp/source/clx/gcontext.lisp
/usr/share/common-lisp/source/clx/generalock.lisp
/usr/share/common-lisp/source/clx/gl.lisp
/usr/share/common-lisp/source/clx/glx.lisp
/usr/share/common-lisp/source/clx/graphics.lisp
/usr/share/common-lisp/source/clx/image.lisp
/usr/share/common-lisp/source/clx/input.lisp
/usr/share/common-lisp/source/clx/keysyms.lisp
/usr/share/common-lisp/source/clx/macros.lisp
/usr/share/common-lisp/source/clx/manager.lisp
/usr/share/common-lisp/source/clx/package.lisp
/usr/share/common-lisp/source/clx/provide.lisp
/usr/share/common-lisp/source/clx/requests.lisp
/usr/share/common-lisp/source/clx/resource.lisp
/usr/share/common-lisp/source/clx/screensaver.lisp
/usr/share/common-lisp/source/clx/shape.lisp
/usr/share/common-lisp/source/clx/sockcl.lisp
/usr/share/common-lisp/source/clx/test/
/usr/share/common-lisp/source/clx/test/image.lisp
/usr/share/common-lisp/source/clx/test/trapezoid.lisp
/usr/share/common-lisp/source/clx/text.lisp
/usr/share/common-lisp/source/clx/translate.lisp
/usr/share/common-lisp/source/clx/xinerama.lisp
/usr/share/common-lisp/source/clx/xrender.lisp
/usr/share/common-lisp/source/clx/xtest.lisp
/usr/share/common-lisp/source/clx/xvidmode.lisp