/usr/share/guile/2.0/oop/ is in guile-2.0-libs 2.0.9+1-1ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/guile/2.0/oop/goops/
/usr/share/guile/2.0/oop/goops.scm
/usr/share/guile/2.0/oop/goops/accessors.scm
/usr/share/guile/2.0/oop/goops/active-slot.scm
/usr/share/guile/2.0/oop/goops/compile.scm
/usr/share/guile/2.0/oop/goops/composite-slot.scm
/usr/share/guile/2.0/oop/goops/describe.scm
/usr/share/guile/2.0/oop/goops/dispatch.scm
/usr/share/guile/2.0/oop/goops/internal.scm
/usr/share/guile/2.0/oop/goops/save.scm
/usr/share/guile/2.0/oop/goops/simple.scm
/usr/share/guile/2.0/oop/goops/stklos.scm
/usr/share/guile/2.0/oop/goops/util.scm