I wish elvis was still around. I don't want everything vim has but I like syntax highlighting and other conveniences
Elvis, at its latest release (2.2.0) is a required part of Slackware, part of the A (essential system) package series. I have it installed on my system, alongside Plasma 6.7 and kernel 7.1.
I just said that it comes already installed (because is a required, essential part of the system) in Slackware.
Slackware is a Linux distribution, just as Arch or NixOS.
So, install Slackware, and elvis comes bundled and installed in your Linux.
The package you mention (SCCS) might be offered as a FreeBSD port, maybe, but I'm certain it's not a required part of the system.