[NixOS] Control what is enabled per machine with module options

nixos/android.nix

@@ -1,8 +1,12 @@
 { pkgs, ... }:
 {
+  options = {
+  };
+  config = {
     environment.systemPackages = with pkgs; [
       android-udev-rules
     ];
     nixpkgs.config.android_sdk.accept_license = true;
     programs.adb.enable = true;
+  };
 }

nixos/base.nix

@@ -1,13 +1,5 @@
-{ config, pkgs, options, inputs, ... }:
+{ config, pkgs, options, inputs, makeEnable, ... }:
-{
+makeEnable config "modules.base" true {
-  imports = [
-    ./environment.nix
-    ./essential.nix
-    ./nix.nix
-    ./ssh.nix
-    ./users.nix
-  ];
-
   nixpkgs.config.permittedInsecurePackages = [
     "openssl-1.0.2u"
     "electron-12.2.3"
@@ -67,10 +59,6 @@
   services.tzupdate.enable = true;
 
   # TODO: Add a comment explaining what this does.
-  services.gnome.at-spi2-core.enable = true;
-
-  services.gnome.gnome-keyring.enable = true;
-
   services.locate.enable = true;
 
   virtualisation.docker.enable = true;

nixos/code.nix

@@ -1,5 +1,5 @@
-{ pkgs, config, ... }:
+{ pkgs, config, makeEnable, ... }:
-{
+makeEnable config "modules.code" true {
   programs.direnv = {
     enable = true;
     nix-direnv.enable = true;

nixos/configuration.nix

@@ -0,0 +1,39 @@
+{ config, lib, ... }:
+{
+  imports = [
+    ./android.nix
+    ./base.nix
+    ./code.nix
+    ./desktop.nix
+    ./environment.nix
+    ./essential.nix
+    ./extra.nix
+    ./games.nix
+    ./git-sync.nix
+    ./internet-computer.nix
+    ./keybase.nix
+    ./nix.nix
+    ./nixified.ai.nix
+    ./ssh.nix
+    ./syncthing.nix
+    ./users.nix
+    ./wsl.nix
+    ./xmonad.nix
+  ];
+
+  options = {
+    features.full.enable = lib.mkEnableOption "Do everything";
+  };
+
+  config = lib.mkIf config.features.full.enable {
+    modules.base.enable = true;
+    modules.desktop.enable = true;
+    modules.xmonad.enable = true;
+    modules.extra.enable = true;
+    modules.code.enable = true;
+    modules.games.enable = true;
+    modules.syncthing.enable = true;
+    modules.fonts.enable = true;
+    modules.nixified-ai.enable = true;
+  };
+}

nixos/desktop.nix

@@ -1,5 +1,5 @@
-{ config, pkgs, options, inputs, ... }:
+{ config, pkgs, options, inputs, makeEnable, ... }:
-{
+makeEnable config "modules.desktop" true {
   imports = [
     ./fonts.nix
   ];
@@ -43,6 +43,10 @@
   # This is for the benefit of VSCODE running natively in wayland
   environment.sessionVariables.NIXOS_OZONE_WL = "1";
 
+  services.gnome.at-spi2-core.enable = true;
+
+  services.gnome.gnome-keyring.enable = true;
+
   environment.systemPackages = with pkgs; [
     # Appearance
     gnome.adwaita-icon-theme

nixos/extra.nix

@@ -1,5 +1,5 @@
-{ config, pkgs, ... }:
+{ config, pkgs, makeEnable, ... }:
-{
+makeEnable config "modules.extra" false {
   services.expressvpn.enable = true;
   programs.hyprland.enable = true;
 

nixos/fonts.nix

@@ -1,5 +1,5 @@
-{ pkgs, ... }:
+{ pkgs, makeEnable, config, ... }:
-{
+makeEnable config "modules.fonts" true {
   # Enable the gtk icon cache
   gtk.iconCache.enable = true;
 

nixos/full.nix

@@ -1,17 +0,0 @@
-{ pkgs, ... }:
-{
-  imports = [
-    ./android.nix
-    ./base.nix
-    ./code.nix
-    ./desktop.nix
-    ./extra.nix
-    ./games.nix
-    ./git-sync.nix
-    ./internet-computer.nix
-    ./keybase.nix
-    ./nixified.ai.nix
-    ./syncthing.nix
-    ./xmonad.nix
-  ];
-}

nixos/games.nix

@@ -1,5 +1,5 @@
-{ config, pkgs, ... }:
+{ config, pkgs, makeEnable, ... }:
-{
+makeEnable config "modules.games" false {
   environment.systemPackages = with pkgs; [
     steam
     heroic

nixos/git-sync.nix

@@ -37,6 +37,10 @@
           uri = "ssh://gitea@1896Folsom.duckdns.org:1123/kkathuang/org.git";
           interval = 45;
         };
+        katnivan = {
+          path = config.home.homeDirectory + "/katnivan";
+          uri = "ssh://gitea@1896Folsom.duckdns.org:1123/colonelpanic/katnivan.git";
+        };
       };
     };
   });

nixos/home-manager.nix

@@ -1,4 +1,4 @@
-username: { pkgs, config, specialArgs, ... }:
+{ pkgs, config, specialArgs, ... }:
 {
   xsession = {
     enable = true;

nixos/kat.nix

@@ -1,12 +1,8 @@
-{ pkgs, inputs, ... }:
+{ pkgs, inputs, config, makeEnable, ... }:
-{
+makeEnable config "modules.kat" false {
-  imports = [
-    inputs.home-manager.nixosModule
-  ];
   environment.systemPackages = with pkgs; [
     bitwarden
     obsidian
-    vlc
     obs-studio
     ffmpeg
   ];
@@ -14,36 +10,4 @@
   environment.extraInit = ''
     export PAGER=cat
   '';
-
-  home-manager.users.kat = { pkgs, config, ... }: {
-    services.gpg-agent = {
-      enable = true;
-      defaultCacheTtl = 8 * 60 * 60;
-      maxCacheTtl = 8 * 60 * 60;
-      enableSshSupport = true;
-      pinentryFlavor = "qt";
-    };
-
-    services.kdeconnect = {
-      enable = true;
-      indicator = true;
-    };
-
-    services.git-sync = {
-      enable = true;
-      repositories = {
-        obsidian = {
-          path = config.home.homeDirectory + "/obsidian";
-          uri = "git@github.com:katandtonic/obsidian.git";
-          interval = 60;
-        };
-        org = {
-          path = config.home.homeDirectory + "/org";
-          uri = "ssh://gitea@1896Folsom.duckdns.org:1123/kkathuang/org.git";
-          interval = 45;
-        };
-      };
-    };
-    home.stateVersion = "23.11";
-  };
 }

nixos/laptop.nix

@@ -1,11 +0,0 @@
-{ pkgs, ... }:
-{
-  imports = [
-    ./base.nix
-    ./code.nix
-    ./desktop.nix
-    ./internet-computer.nix
-    ./syncthing.nix
-    ./xmonad.nix
-  ];
-}

nixos/machines/adele.nix

@@ -2,10 +2,20 @@
 
 {
   imports = [
-    ../laptop.nix
+    ../configuration.nix
     inputs.nixos-hardware.nixosModules.dell-xps-17-9700-intel
   ];
 
+  modules.base.enable = true;
+  modules.desktop.enable = true;
+  modules.xmonad.enable = true;
+  modules.extra.enable = false;
+  modules.code.enable = true;
+  modules.games.enable = false;
+  modules.syncthing.enable = true;
+  modules.fonts.enable = true;
+  modules.nixified-ai.enable = false;
+
   hardware.enableRedistributableFirmware = true;
 
   boot.initrd.availableKernelModules = [ "xhci_pci" "nvme" "usb_storage" "sd_mod" "rtsx_pci_sdmmc" ];

nixos/machines/biskcomp.nix

@@ -1,14 +1,21 @@
 {
   imports = [
-    ../internet-computer.nix
+    ../configuration.nix
     ../raspberry-pi.nix
-    ../base.nix
-    ../syncthing.nix
-    ../desktop.nix
-    ../code.nix
-    # ../xmonad.nix
   ];
 
+  modules.raspberry-pi.enable = true;
+
+  modules.base.enable = true;
+  modules.desktop.enable = true;
+  modules.xmonad.enable = true;
+  modules.extra.enable = false;
+  modules.code.enable = true;
+  modules.games.enable = false;
+  modules.syncthing.enable = true;
+  modules.fonts.enable = true;
+  modules.nixified-ai.enable = false;
+
   services.plex = {
     enable = true;
   };

nixos/machines/ivanm-dfinity-razer.nix

@@ -1,13 +1,20 @@
-# Do not modify this file!  It was generated by ‘nixos-generate-config’
-# and may be overwritten by future invocations.  Please make changes
-# to /etc/nixos/configuration.nix instead.
 { config, lib, pkgs, ... }:
 
 {
   imports = [
-    ../full.nix
+    ../configuration.nix
   ];
 
+  modules.base.enable = true;
+  modules.desktop.enable = true;
+  modules.xmonad.enable = true;
+  modules.extra.enable = false;
+  modules.code.enable = true;
+  modules.games.enable = false;
+  modules.syncthing.enable = true;
+  modules.fonts.enable = true;
+  modules.nixified-ai.enable = false;
+
   hardware.enableRedistributableFirmware = true;
 
   # disable card with bbswitch by default since we turn it on only on demand!

nixos/machines/jay-lenovo-wsl.nix

@@ -1,12 +1,10 @@
 { lib, pkgs, config, inputs, ... }:
 {
   imports = [
-    ../syncthing.nix
+    ../configuration.nix
-    ../wsl.nix
-    ../kat.nix
   ];
 
-  networking.hostName = "jay-lenovo-wsl";
+  modules.wls.enable = true;tworking.hostName = "jay-lenovo-wsl";
 
   wsl.defaultUser = "kat";
   system.stateVersion = "22.05";

nixos/machines/jay-lenovo.nix

@@ -2,10 +2,11 @@
 
 {
   imports = [
-    ../full.nix
+    ../configuration.nix
-    ../kat.nix
   ];
 
+  features.full.enable = true;
+
   environment.systemPackages = with pkgs; [
     linuxPackages_latest.perf
     zenmonitor

nixos/machines/nixquick.nix

@@ -1,11 +1,11 @@
 { config, lib, pkgs, inputs, ... }:
 {
   imports = [
-    ../full.nix
+    ../configuration.nix
-    ../kat.nix
-    ../nixified.ai.nix
   ];
 
+  features.full.enable = true;
+
   networking.hostName = "nixquick";
 
   hardware.enableRedistributableFirmware = true;

nixos/machines/ryzen-shine.nix

@@ -2,10 +2,10 @@
 
 {
   imports = [
-    ../full.nix
+    ../configuration.nix
   ];
 
-  modules.nixified-ai.enable = true;
+  features.full.enable = true;
 
   boot.loader.systemd-boot.configurationLimit = 5;
 

nixos/machines/stevie-nixos.nix

@@ -1,83 +0,0 @@
-{ config, lib, pkgs, inputs, ... }:
-
-{
-  imports = [
-    ../full.nix
-    ../base.nix
-  ];
-
-  hardware.enableRedistributableFirmware = true;
-
-  boot.initrd.availableKernelModules = [
-    "xhci_pci" "nvme" "usb_storage" "sd_mod" "rtsx_pci_sdmmc"
-  ];
-
-  boot.initrd.kernelModules = [ ];
-  boot.kernelModules = [ "kvm-intel" ];
-  boot.extraModulePackages = with config.boot.kernelPackages; [ ];
-
-  services.xserver = {
-    videoDrivers = [ "modesetting ""nvidia" ];
-  };
-
-  services.thermald.enable = true;
-
-  boot.kernelPackages = pkgs.linuxPackages_latest;
-
-  boot.kernelPatches = [{
-    name = "enable-soundwire-drivers";
-    patch = null;
-    extraConfig = ''
-      SND_SOC_INTEL_USER_FRIENDLY_LONG_NAMES y
-      SND_SOC_INTEL_SOUNDWIRE_SOF_MACH m
-      SND_SOC_RT1308 m
-    '';
-    ignoreConfigErrors = true;
-  }];
-
-  hardware.nvidia.prime = {
-    sync.enable = true;
-
-    # Bus ID of the NVIDIA GPU. You can find it using lspci, either under 3D or VGA
-    nvidiaBusId = "PCI:1:0:0";
-
-    # Bus ID of the Intel GPU. You can find it using lspci, either under 3D or VGA
-    intelBusId = "PCI:0:2:0";
-  };
-
-  services.xserver.screenSection = ''
-    Option         "metamodes" "nvidia-auto-select +0+0 {ForceCompositionPipeline=On, ForceFullCompositionPipeline=On}"
-    Option         "AllowIndirectGLXProtocol" "off"
-    Option         "TripleBuffer" "on"
-  '';
-
-  boot.loader.systemd-boot.enable = true;
-  boot.loader.efi.canTouchEfiVariables = true;
-
-  services.xserver.libinput.enable = true;
-
-  fileSystems."/" =
-    { device = "/dev/disk/by-uuid/7c999009-1ff1-42f7-a64a-3fa91fc777a8";
-      fsType = "ext4";
-    };
-
-  boot.initrd.luks.devices."cryptroot".device = "/dev/disk/by-uuid/97c1eee7-b161-4186-9c14-6b1771d49afb";
-
-  fileSystems."/boot" =
-    { device = "/dev/disk/by-label/ESP";
-      fsType = "vfat";
-    };
-
-
-  swapDevices = [ ];
-
-  networking.hostName = "stevie-nixos";
-
-  nix.settings.maxJobs = lib.mkDefault 16;
-  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
-
-  hardware.video.hidpi.enable = true;
-  services.xserver.dpi = 180;
-
-  system.stateVersion = "21.05";
-}

nixos/machines/uber-loaner.nix

@@ -1,47 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-{
-  imports = [
-    ../full.nix
-    ../games.nix
-    ../extra.nix
-  ];
-
-  hardware.enableRedistributableFirmware = true;
-
-  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "usbhid" "sd_mod" ];
-  boot.kernelModules = [ "kvm-intel" ];
-  boot.extraModulePackages = [ pkgs.linuxPackages.rtl8814au ];
-  boot.loader.grub.efiSupport = true;
-  boot.loader.grub.device = "nodev";
-  boot.loader.grub.enable = true;
-  services.xserver = {
-    libinput.enable = true;
-  };
-  hardware.facetimehd.enable = true;
-
-  fileSystems."/boot" = {
-    device = "/dev/disk/by-label/EFI";
-    fsType = "vfat";
-  };
-
-  fileSystems."/" =
-    { device = "/dev/disk/by-uuid/2958f04b-8387-4a0c-abc1-f12036c53581";
-      fsType = "ext4";
-    };
-
-  swapDevices =
-    [ { device = "/dev/disk/by-uuid/33c38b23-af1a-4bc4-913e-c774f1030817"; }
-    ];
-
-  fileSystems."/tmp" =
-    { device = "tmpfs";
-      fsType = "tmpfs";
-    };
-
-  networking.hostName = "uber-loaner";
-
-  nix.settings.maxJobs = lib.mkDefault 4;
-  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
-  users.extraUsers.root.initialHashedPassword = "";
-}

nixos/make-enable.nix

@@ -17,7 +17,7 @@ let
     };
   };
 
-  cfg = lib.attrByPath (lib.splitString "." pathStr) { enable = false; defaulted = true; } config;
+  cfg = lib.attrByPath (lib.splitString "." pathStr) { enable = false; } config;
 
   # Extract 'imports' from configAttrs, if it exists
   importsAttr = if configAttrs ? imports then configAttrs.imports else [];

nixos/raspberry-pi.nix

@@ -1,6 +1,6 @@
-{ config, pkgs, inputs, ... }:
+{ config, pkgs, inputs, makeEnable, ... }:
 
-{
+makeEnable config "modules.raspberry-pi" false {
   imports = [
     inputs.nixos-hardware.nixosModules.raspberry-pi-4
   ];

nixos/syncthing.nix

@@ -1,4 +1,4 @@
-{ pkgs, ... }:
+{ pkgs, makeEnable, config, ... }:
 let
   devices = {
     biskcomp = {
@@ -13,7 +13,7 @@ let
   };
   allDevices = builtins.attrNames devices;
 in
-{
+makeEnable config "modules.syncthing" true {
   system.activationScripts.syncthingPermissions = {
     text = ''
       chown -R syncthing:syncthing /var/lib/syncthing

nixos/wsl.nix

@@ -1,31 +1,18 @@
-{ inputs, pkgs, ... }:
+{ config, inputs, pkgs, makeEnable, ... }:
-{
+makeEnable config "modules.wsl" false {
   imports = [
     inputs.nixos-wsl.nixosModules.wsl
-    ./ssh.nix
-    ./environment.nix
-    ./essential.nix
-    ./fonts.nix
-    ./nix.nix
-    ./users.nix
-    ./code.nix
   ];
 
-  programs.gnupg.agent = { enable = true; enableSSHSupport = true; };
+  modules.base.enable = false;
-
+  modules.desktop.enable = false;
-  environment.variables = {
+  modules.xmonad.enable = false;
-    SHELL = "${pkgs.zsh}/bin/zsh";
-  };
 
   wsl = {
     enable = true;
     automountPath = "/mnt";
     startMenuLaunchers = true;
     nativeSystemd = true;
-
     docker-native.enable = true;
-
-    # Enable integration with Docker Desktop (needs to be installed)
-    # docker-desktop.enable = true;
   };
 }