I'm refurbishing an old PC to work as a home server for several stuff. I'm looking for a lightweight distribution to install in it, but with a decent package repository. A small image size will be appreciated, as I have slow bandwidth too.
Linux is quite lightweight. Pick a distro that doesn't run a lot of stuff by default. OpenBSD only runs sshd exposed to the network, AFAIR. Debian probably does the same. But really, the lightness comes from what isn't running. NixOS, fedora, rocky, alpine are all decent alternatives.