Right. Installing packages isn't a niche or weird thing in any way. Nix does have equivalents to "apt install <package>", etc... but, it's prone to "I forgot I

Right. Installing packages isn't a niche or weird thing in any way. Nix does have equivalents to "apt install <package>", etc... but, it's prone to "I forgot I did that / I didn't know I did that", and problems arising from that. (Other distribution package managers like apt-get or pacman require installing packages as root; but with nix packages should be installed as non-root. And the nix command to update installed packages isn't intuitive). What's typically encouraged is to instead install packages as part of the NixOS configuration, or as part of a home-manager configuration. Or, just using commands like "nix shell nixpkgs#<package>", which just adds the program to the path in the current shell, without installing it. (Which is a neat feature of nix).