Simon Bruder
c1283b6ffa
Fixes #27 This adds the `sbruder.full` option (enabled by default), which disables some otherwise enabled packages/modules when disabled. When setting it to false on a full gui system it reduces the size of the system closure by over 50%. It is intended for systems with low (main) disk space.
139 lines
3.5 KiB
Nix
139 lines
3.5 KiB
Nix
{ config, lib, pkgs, ... }:
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let
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# Taken from https://nixos.wiki/wiki/Overlays
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overlaysCompat = pkgs.writeTextFile {
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name = "overlays-compat";
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destination = "/overlays.nix";
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text = ''
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self: super:
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with super.lib;
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let
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# Load the system config and get the `nixpkgs.overlays` option
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overlays = (import <nixpkgs/nixos> { }).config.nixpkgs.overlays;
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in
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# Apply all overlays to the input of the current "main" overlay
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foldl' (flip extends) (_: super) overlays self
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'';
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};
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in
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{
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# Options that affect multiple modules
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options.sbruder = {
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full = lib.mkOption {
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type = lib.types.bool;
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description = ''
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Whether to build the full system. If disabled, the system closure will
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be smaller, but some features will not be available.
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'';
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default = true;
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};
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gui.enable = lib.mkEnableOption "gui";
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games.enable = lib.mkEnableOption "games";
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};
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# All modules are imported but non-essential modules are activated by
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# configuration options
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imports = [
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./cpu
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./cups.nix
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./docker.nix
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./fonts.nix
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./gpu
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./grub.nix
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./gui.nix
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./initrd-ssh.nix
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./libvirt.nix
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./locales.nix
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./media-proxy.nix
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./network-manager.nix
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./office.nix
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./prometheus/node_exporter.nix
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./pubkeys.nix
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./pulseaudio.nix
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./restic.nix
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./secrets.nix
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./ssd.nix
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./ssh.nix
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./tools.nix
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./udev.nix
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./unfree.nix
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./wireguard
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];
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config = {
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# Essential system tools
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environment.systemPackages = with pkgs; [
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git
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git-crypt # used to store secrets in configuration
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git-lfs # not so essential, but required to clone config
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htop
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tmux
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vim
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];
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# Clean temporary files on boot
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boot.cleanTmpDir = true;
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# Set zsh as default shell
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programs.zsh.enable = true;
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users.defaultUserShell = pkgs.zsh;
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# command-not-found does not work without channels
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programs.command-not-found.enable = false;
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# Sane swapping
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boot.kernel.sysctl."vm.swapiness" = 10;
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# Store logs persistently
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services.journald.extraConfig = "Storage = persistent";
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# Hard drive monitoring
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services.smartd.enable = true;
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# Network monitoring
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services.vnstat.enable = true;
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# Authentication/Encryption agents
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programs.gnupg.agent.enable = true;
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programs.ssh.startAgent = true;
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# NixOS state version (see https://nixos.wiki/wiki/FAQ/When_do_I_update_stateVersion)
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system.stateVersion = "20.03";
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nix = {
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nixPath = [
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"/var/src" # pinned nixpkgs and configuration
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"nixpkgs=/var/src/nixpkgs" # for nix run
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"nixpkgs-overlays=${overlaysCompat}"
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];
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# Make sudoers trusted nix users
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trustedUsers = [ "@wheel" ];
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# On-the-fly optimisation of nix store
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autoOptimiseStore = true;
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# Keep output of derivations with gc root
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extraOptions = ''
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keep-outputs = true
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keep-derivations = true
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'';
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# Make nix build in background less noticeable
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daemonIONiceLevel = 5; # 0-7
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};
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systemd.services.nix-daemon.serviceConfig.CPUSchedulingPolicy = "batch";
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nixpkgs.config = {
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# Add unstable channel
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packageOverrides = pkgs: {
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unstable = import (import ../nix/sources.nix).nixpkgs-unstable {
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config = config.nixpkgs.config;
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overlays = config.nixpkgs.overlays;
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};
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};
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};
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nixpkgs.overlays = [
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(import ../pkgs)
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];
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};
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}
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