AFAICS, the unRAR license fulfills all conditions for the BINARY-REDISTRIBUTABLE group.
commit 2a60c21df59c5b18fc68b7961fd581aa1235d8d3 Author: Robin H. Johnson <robbat2@gentoo.org> Date: Mon Apr 22 08:33:57 2019 -0700 license_groups: add unRAR to @BINARY-REDISTRIBUTABLE As discussed in #gentoo-releng on 2019/04/22. The unRAR license: - permits distribution - does not require explicit approval - does not restrict cost of redistribution Signed-off-by: Robin H. Johnson <robbat2@gentoo.org>