The package doesn't call any of the multi-impl functions, only python-r1. It should use python-single-r1 rather than emulating it and faking python-r1.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=101f66556ddc3d8d72fbf0e035240e597005f79c commit 101f66556ddc3d8d72fbf0e035240e597005f79c Author: Mike Gilbert <floppym@gentoo.org> AuthorDate: 2020-04-24 16:49:32 +0000 Commit: Mike Gilbert <floppym@gentoo.org> CommitDate: 2020-04-24 16:52:57 +0000 dev-lang/yasm: use python-single-r1 Closes: https://bugs.gentoo.org/710216 Signed-off-by: Mike Gilbert <floppym@gentoo.org> dev-lang/yasm/yasm-1.3.0.ebuild | 10 +++++++--- dev-lang/yasm/yasm-9999.ebuild | 10 +++++++--- 2 files changed, 14 insertions(+), 6 deletions(-)