/usr/share/guile/2.0/rnrs/ is in guile-2.0-libs 2.0.5+1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/guile/2.0/rnrs/arithmetic/
/usr/share/guile/2.0/rnrs/arithmetic/bitwise.scm
/usr/share/guile/2.0/rnrs/arithmetic/fixnums.scm
/usr/share/guile/2.0/rnrs/arithmetic/flonums.scm
/usr/share/guile/2.0/rnrs/base.scm
/usr/share/guile/2.0/rnrs/bytevectors.scm
/usr/share/guile/2.0/rnrs/conditions.scm
/usr/share/guile/2.0/rnrs/control.scm
/usr/share/guile/2.0/rnrs/enums.scm
/usr/share/guile/2.0/rnrs/eval.scm
/usr/share/guile/2.0/rnrs/exceptions.scm
/usr/share/guile/2.0/rnrs/files.scm
/usr/share/guile/2.0/rnrs/hashtables.scm
/usr/share/guile/2.0/rnrs/io/
/usr/share/guile/2.0/rnrs/io/ports.scm
/usr/share/guile/2.0/rnrs/io/simple.scm
/usr/share/guile/2.0/rnrs/lists.scm
/usr/share/guile/2.0/rnrs/mutable-pairs.scm
/usr/share/guile/2.0/rnrs/mutable-strings.scm
/usr/share/guile/2.0/rnrs/programs.scm
/usr/share/guile/2.0/rnrs/r5rs.scm
/usr/share/guile/2.0/rnrs/records/
/usr/share/guile/2.0/rnrs/records/inspection.scm
/usr/share/guile/2.0/rnrs/records/procedural.scm
/usr/share/guile/2.0/rnrs/records/syntactic.scm
/usr/share/guile/2.0/rnrs/sorting.scm
/usr/share/guile/2.0/rnrs/syntax-case.scm
/usr/share/guile/2.0/rnrs/unicode.scm