Apt-get has the command "autoremove" that removes not needed packages. An example:
1. Ivan installs package X, with dependencies: A, B.
2. Ivan installs package Y, with dependencies: B, C.
3. Ivan don't already need the package X, he do "slapt-get --remove X".
4. Ivan is angry. He doesn't have free ...

Это только в MAN? Попробуй в /etc/man.conf поменять строку "NROFF <что-то там>" на: "NROFF /usr/bin/groff -Dutf8 -Tutf8 -mandoc"

Would freebsd-like ports for salix is good idea?

Welcome! Check the basics: https://docs.slackware.com/slackware:package_management

https://dusk.idlemoor.tk/ - contains pre-built new linux kernel version packages. Now it contains versions: 4.4, 4.9, 4.12.

And yes, can anyone test this repo working with slapt-get ?

Why not to IRC?

I think Salix needs a better installation manager. If it will be, Salix would be more popular.

Wow. Thanks!

Slackware and Salix worked more than halfyear. Really, I reinstalled windows every 3 months because it died; in debian (and forks) brightness didn't work; opensuse is a bit druggy distro, it can die I don't know how. One time he updated to tumbleweed, but I didn't do that; archlinux is not for me ...