nixos/defaults.nix

   1 { pkgs, lib, config, ... }:
   2 let inherit (lib) types;
   3 in
   4 {
   5 imports = [
   6   ./modules.nix
   7   ./defaults/predictable-interface-names.nix
   8 ];
   9 config = {
  10   nix = {
  11     autoOptimiseStore = true;
  12     extraOptions = ''
  13     '';
  14     # Use gc.automatic to keep disk space under control.
  15     gc = {
  16       automatic = true;
  17       dates = "weekly";
  18       options = "--delete-older-than 30d";
  19     };
  20   };
  21
  22   nixpkgs = {
  23     config = {
  24       allowUnfree = false;
  25       /*
  26       packageOverrides = pkgs: {
  27         postfix = pkgs.postfix.override {
  28           withLDAP = true;
  29         };
  30       };
  31       */
  32     };
  33     #overlays = import ../overlays.nix;
  34   };
  35
  36   documentation.nixos = {
  37     enable = false; # NOTE: useless on a server, and CPU intensive.
  38   };
  39
  40   # Clean /tmp automatically on boot.
  41   boot.cleanTmpDir = true;
  42
  43   time = {
  44     timeZone = "Europe/Paris";
  45   };
  46
  47   i18n = {
  48     consoleFont   = "Lat2-Terminus16";
  49     consoleKeyMap = "fr";
  50     defaultLocale = "fr_FR.UTF-8";
  51   };
  52
  53   services = {
  54     openssh = {
  55       enable = true;
  56       passwordAuthentication = false;
  57       extraConfig = ''
  58       '';
  59     };
  60     journald = {
  61       extraConfig = ''
  62         SystemMaxUse=50M
  63       '';
  64     };
  65   };
  66
  67   environment = {
  68     systemPackages = with pkgs; [
  69       binutils
  70       dnsutils
  71       htop
  72       inetutils
  73       iotop
  74       lsof
  75       mailutils
  76       multitail
  77       ncdu
  78       pv
  79       swaplist
  80       tcpdump
  81       tmux
  82       tree
  83       vim
  84       which
  85     ];
  86
  87     etc."inputrc".text = lib.readFile defaults/readline/inputrc;
  88   };
  89
  90   programs = {
  91     bash = {
  92       interactiveShellInit = ''
  93         bind '"\e[A":history-search-backward'
  94         bind '"\e[B":history-search-forward'
  95
  96         # Ignore duplicate commands, ignore commands starting with a space
  97         export HISTCONTROL=erasedups:ignorespace
  98         export HISTSIZE=42000
  99
 100         # Append to the history instead of overwriting (good for multiple connections)
 101         shopt -s histappend
 102       '';
 103       shellAliases = {
 104         cl = "clear";
 105         l  = "ls -alh";
 106         ll = "ls -l";
 107         ls = "ls --color=tty";
 108         mem = "ps -e -orss=,user=,args= | sort -b -k1,1n";
 109
 110         s="sudo systemctl";
 111         s-u="systemctl --user";
 112
 113         nixos-clean="sudo nix-collect-garbage -d";
 114         nixos-history="sudo nix-env --list-generations --profile /nix/var/nix/profiles/system";
 115         nixos-rollback="sudo nixos-rebuild switch --rollback";
 116         nixos-update="sudo nix-channel --update";
 117         nixos-upgrade="sudo nixos-rebuild switch";
 118         nixos-upstream="sudo nix-channel --list";
 119       };
 120     };
 121     mtr.enable = true;
 122   };
 123 };
 124 }