lio-utils is a dependency of targetcli which is used for managing the new SCSI target subsystem in the kernel. I've copied the -9999 ebuild into a snapshot ebuild since upstream rarely tags releases (last tagged release is well over a year old).
Created attachment 336296 [details]
lio-utils snapshot ebuild
ebuild SRC_URI references a snapshot I created that can be used by the maintainers as desired.
The -9999 was removed, so this can be now added as a new package.