nixos-combined-flake/modules/nixos/base/programs/default.nix

{ config, lib, pkgs, vars, ... }:
{
  environment = { 
    systemPackages = with pkgs; [
      vim
        git
        openssh
        file
        w3m
        btop
        iftop
        iotop
        ncdu
    ];
    etc = {
      "ncdu.conf".text = ''
        --color dark
        '';
    };
  };

  programs = {
    zsh.enable = true;
    command-not-found.enable = false;
  };
}