I searched through the web interface at the clearlinux.org
packages site and couldn't
find a scheme implementation.
I would like to recommend "GNU Guile"; https://www.gnu.org/software/guile/
It's latest source is downloadable via;
I believe it's fully ready for the advanced automation provided by the Clear Linux
build systems setup.
At last check it builds the normal GNU way (i.e. ./configure, make, make install).