initial commit

modules/nixos/device/default.nix

@@ -0,0 +1,6 @@
+{
+  desktop = import ./desktop.nix;
+  laptop = import ./laptop.nix;
+  server = import ./server.nix;
+  vm = import ./vm.nix;
+}

modules/nixos/device/desktop.nix

@@ -0,0 +1,8 @@
+{
+  imports = [
+    ../audio
+  ];
+
+  # improve desktop responsiveness when updating the system
+  nix.daemonCPUSchedPolicy = "idle";
+}

modules/nixos/device/laptop.nix

@@ -0,0 +1,33 @@
+{ pkgs, lib, ... }:
+
+let
+  inherit (lib) mkDefault;
+in
+{
+  imports = [
+    ./desktop.nix
+    ../bluetooth
+  ];
+
+  services.tlp = {
+    enable = mkDefault true;
+    settings = {
+      CPU_SCALING_GOVERNOR_ON_AC = mkDefault "performance";
+      CPU_SCALING_GOVERNOR_ON_BAT = mkDefault "powersave";
+
+      CPU_ENERGY_PERF_POLICY_ON_BAT = mkDefault "power";
+      CPU_ENERGY_PERF_POLICY_ON_AC = mkDefault "performance";
+
+      PLATFORM_PROFILE_ON_AC = mkDefault "performance";
+      PLATFORM_PROFILE_ON_BAT = mkDefault "low-power";
+
+      START_CHARGE_THRESH_BAT0 = mkDefault 75;
+      STOP_CHARGE_THRESH_BAT0 = mkDefault 80;
+    };
+  };
+
+  # avoid conflicts with tlp
+  services.power-profiles-daemon.enable = mkDefault false;
+
+  environment.systemPackages = [ pkgs.powertop ];
+}

modules/nixos/device/server.nix

@@ -0,0 +1,69 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  inherit (config.programs) neovim;
+  inherit (lib) mkDefault mkIf;
+in
+{
+  environment = {
+    variables = {
+      BROWSER = "echo";
+      EDITOR = mkIf neovim.enable "nvim";
+      VISUAL = mkIf neovim.enable "nvim";
+    };
+    shellAliases = {
+      v = mkIf neovim.enable "nvim";
+    };
+    # do not install /lib/ld-linux.so.2 and /lib64/ld-linux-x86-64.so.2
+    stub-ld.enable = mkDefault false;
+  };
+
+  documentation = {
+    enable = mkDefault false;
+    nixos.enable = mkDefault false;
+    doc.enable = mkDefault false;
+    info.enable = mkDefault false;
+    man.enable = mkDefault false;
+  };
+
+  fonts.fontconfig.enable = mkDefault false;
+
+  xdg.autostart.enable = mkDefault false;
+  xdg.icons.enable = mkDefault false;
+  xdg.menus.enable = mkDefault false;
+  xdg.mime.enable = mkDefault false;
+  xdg.sounds.enable = mkDefault false;
+
+  programs.git.package = mkDefault pkgs.gitMinimal;
+
+  programs.neovim = {
+    enable = mkDefault true;
+    defaultEditor = mkDefault true;
+    vimAlias = mkDefault true;
+    viAlias = mkDefault true;
+  };
+
+  # emergency mode is useless on headless machines
+  systemd.enableEmergencyMode = false;
+  boot.initrd.systemd.suppressedUnits = mkIf config.systemd.enableEmergencyMode [
+    "emergency.service"
+    "emergency.target"
+  ];
+
+  systemd.sleep.extraConfig = ''
+    AllowSuspend=no
+    AllowHibernation=no
+  '';
+
+  # force reboots
+  systemd.settings.Manager = {
+    RuntimeWatchdogSec = mkDefault "15s";
+    RebootWatchdogSec = mkDefault "30s";
+    KExecWatchdogSec = mkDefault "1m";
+  };
+}

modules/nixos/device/vm.nix

@@ -0,0 +1,10 @@
+{ lib, ... }:
+
+let
+  inherit (lib) mkDefault;
+in
+{
+  services.qemuGuest.enable = mkDefault true;
+  services.spice-vdagentd.enable = mkDefault true;
+  services.spice-webdavd.enable = mkDefault true;
+}