/usr/share/guile/site/ is in g-wrap 1.9.14-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/guile/site/g-wrap/
/usr/share/guile/site/g-wrap.scm
/usr/share/guile/site/g-wrap/c-codegen.scm
/usr/share/guile/site/g-wrap/c-types.scm
/usr/share/guile/site/g-wrap/compat.scm
/usr/share/guile/site/g-wrap/enumeration.scm
/usr/share/guile/site/g-wrap/guile/
/usr/share/guile/site/g-wrap/guile.scm
/usr/share/guile/site/g-wrap/guile/ws/
/usr/share/guile/site/g-wrap/guile/ws/standard.scm
/usr/share/guile/site/g-wrap/rti.scm
/usr/share/guile/site/g-wrap/scm-codegen.scm
/usr/share/guile/site/g-wrap/simple-type.scm
/usr/share/guile/site/g-wrap/util.scm
/usr/share/guile/site/g-wrap/ws/
/usr/share/guile/site/g-wrap/ws/standard.scm