/usr/share/r6rs/nanopass/ is in r6rs-nanopass-dev 1.9+git20160429.g1f7e80b-1build1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/r6rs/nanopass/helpers.ss
/usr/share/r6rs/nanopass/implementation-helpers.chezscheme.sls
/usr/share/r6rs/nanopass/implementation-helpers.ikarus.ss
/usr/share/r6rs/nanopass/implementation-helpers.vicare.sls
/usr/share/r6rs/nanopass/language-helpers.ss
/usr/share/r6rs/nanopass/language-node-counter.ss
/usr/share/r6rs/nanopass/language.ss
/usr/share/r6rs/nanopass/meta-parser.ss
/usr/share/r6rs/nanopass/meta-syntax-dispatch.ss
/usr/share/r6rs/nanopass/nano-syntax-dispatch.ss
/usr/share/r6rs/nanopass/parser.ss
/usr/share/r6rs/nanopass/pass.ss
/usr/share/r6rs/nanopass/records.ss
/usr/share/r6rs/nanopass/syntaxconvert.ss
/usr/share/r6rs/nanopass/unparser.ss