refactored system

hosts/nova/default.nix

@@ -0,0 +1,18 @@
+{ config, pkgs, ... }:
+
+{
+  networking.hostName = "nova";
+
+  imports = [
+    ./hardware.nix
+    ../users/alt.nix
+    ../users/guest.nix
+    ../system
+    ../system/desktop
+    ../system/desktop/gnome.nix
+    # ../system/desktop/cast.nix
+    ../system/desktop/ergodox.nix
+    ../system/desktop/steam.nix
+    ../system/desktop/yubikey.nix
+  ];
+}

hosts/nova/hardware.nix

@@ -0,0 +1,56 @@
+{ config, lib, pkgs, modulesPath, ... }:
+
+let
+  subvolume = {
+    device = "/dev/disk/by-uuid/6a0d25d4-0253-4467-85cc-ab3e0ef71f54";
+    fsType = "btrfs";
+  };
+in
+
+{
+  imports = [ (modulesPath + "/installer/scan/not-detected.nix") ];
+
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "nvme" "usb_storage" "sd_mod" "sdhci_pci" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" "v4l2loopback" ];
+  boot.extraModulePackages = [ config.boot.kernelPackages.v4l2loopback ];
+
+  boot.initrd.luks.devices."cryptroot" = {
+    device = "/dev/disk/by-uuid/eaad533f-8586-4002-9c53-5aecf8e7abd8";
+    allowDiscards = true;
+  };
+
+  fileSystems."/" = subvolume // {
+    options = [ "subvol=root" "compress=zstd" "discard=async" ];
+  };
+
+  fileSystems."/nix" = subvolume // {
+    options = [ "subvol=nix" "compress=zstd" "noatime" "discard=async" ];
+  };
+
+  fileSystems."/home" = subvolume // {
+    options = [ "subvol=home" "compress=zstd" "discard=async" ];
+  };
+
+  fileSystems."/boot" = {
+    device = "/dev/disk/by-uuid/7362-C4C4";
+    fsType = "vfat";
+  };
+
+  swapDevices = [{
+    device = "/swapfile";
+    size = 8 * 1045;
+  }];
+
+  networking.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  powerManagement.cpuFreqGovernor = lib.mkDefault "ondemand";
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+  hardware.trackpoint.enable = true;
+  boot.kernelParams = [ "psmouse.elantech_smbus=0" ];
+
+}