Gentoo on a frame.work 16 laptop

If an upgrade path existed from one Slackware version to the next, I'm sure I knew about it and used it. But whatever it was, it wasn't as smooth and finely-grained as Gentoo, which was as seamless as could be. I don't remember ever worrying about some library getting out of date. It may have happened, but if so, too rarely for me to remember now or worry about.