This line from src_install breaks on non-multilib systems because you're trying to rename the "lib" directory to same name of "lib". > # fix multilib-strict QA failures > mv "${ED%/}"/usr/{lib,$(get_libdir)} || die Maybe you should use sed on SConstruct instead so that it installs to the right directory in the first place. This currently affects both 0.1.0 and 9999.
Thanks for reporting the issue! https://github.com/gentoo/gentoo/commit/9c74d13ea11ffa3c5ecb4590f9b4de25dfedd5d2
Really fixed: https://github.com/gentoo/gentoo/commit/3e7c65e7104c14064f8cf6c9d5073bc3974197f7