/usr/ is in libalkimia-dev 5.0.0-3.
This file is owned by root:root, with mode 0o755.
..
/usr/include/
/usr/include/alkimia/
/usr/include/alkimia/alk_export.h
/usr/include/alkimia/alkcompany.h
/usr/include/alkimia/alkquoteitem.h
/usr/include/alkimia/alkvalue.h
/usr/lib/
/usr/lib/cmake/
/usr/lib/cmake/LibAlkimia/
/usr/lib/cmake/LibAlkimia/LibAlkimiaConfig.cmake
/usr/lib/cmake/LibAlkimia/LibAlkimiaConfigVersion.cmake
/usr/lib/cmake/LibAlkimia/LibAlkimiaTargets-none.cmake
/usr/lib/cmake/LibAlkimia/LibAlkimiaTargets.cmake
/usr/lib/pkgconfig/
/usr/lib/pkgconfig/libalkimia.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libalkimia-dev/
/usr/share/doc/libalkimia-dev/copyright
/usr/lib/libalkimia.so
/usr/share/doc/libalkimia-dev/changelog.Debian.gz