I am hoping that someone still has the ebuilds (app plus two patches) for barrier v2.4.0.
x11-misc/barrier/barrier-2.4.0.ebuild
x11-misc/barrier/files/barrier-2.4.0-gcc-13.patch
x11-misc/barrier/files/barrier-2.4.0-includes.patch
I am currently using barrier to utilize the keyboard and mouse on my desktop to one of my laptops...I was going to add it to my second laptop but apparently the ebuilds were removed from the repo in July and I didn't notice. I also noticed that the ebuilds for synergy were also removed. I've had better luck with barrier, but if someone has files for synergy I would give it another shot.
Thanks in advance!

