/usr/ is in elpa-ws-butler 0.6-1.
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..
/usr/lib/
/usr/lib/emacsen-common/
/usr/lib/emacsen-common/packages/
/usr/lib/emacsen-common/packages/compat/
/usr/lib/emacsen-common/packages/compat/elpa-ws-butler
/usr/lib/emacsen-common/packages/install/
/usr/lib/emacsen-common/packages/install/elpa-ws-butler
/usr/lib/emacsen-common/packages/remove/
/usr/lib/emacsen-common/packages/remove/elpa-ws-butler
/usr/share/
/usr/share/doc/
/usr/share/doc/elpa-ws-butler/
/usr/share/doc/elpa-ws-butler/README.md
/usr/share/doc/elpa-ws-butler/changelog.Debian.gz
/usr/share/doc/elpa-ws-butler/copyright
/usr/share/emacs/
/usr/share/emacs/site-lisp/
/usr/share/emacs/site-lisp/elpa-src/
/usr/share/emacs/site-lisp/elpa-src/ws-butler-0.6/
/usr/share/emacs/site-lisp/elpa-src/ws-butler-0.6/ws-butler-autoloads.el
/usr/share/emacs/site-lisp/elpa-src/ws-butler-0.6/ws-butler-pkg.el
/usr/share/emacs/site-lisp/elpa-src/ws-butler-0.6/ws-butler.el