Tried Alpine in a VM again, set it up in ~40 minutes compared to ~ 3 hours last time, and made a lot more stuff than last time, even adding tmpfs-based home partition in fstab (it was one of things I tested since I plan to include it in my "Linux for university" project) very quickly

KDE working smoothly on 2 cpu cores, 1 gb of ram (-300MB tmpfs partition even), and <3GB of disk space, and even properly running several apps like Konsole, Writer and Chromium, this made me think that even if I won't probably use it for project (since musl and locale setting problems) I could install it on an "old" AMD laptop I will get next month and will use in University