init nix-os configuraion files

profiles/gaea/hardware-configuration.nix

@@ -0,0 +1,58 @@
+# 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, modulesPath, username, ... }:
+
+{
+  imports =
+    [
+      (modulesPath + "/installer/scan/not-detected.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "xhci_pci" "ahci" "nvme" "usbhid" "usb_storage" "sd_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    {
+      device = "/dev/disk/by-uuid/1be5aa7e-2b12-4532-9e42-65cd48b72aa6";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    {
+      device = "/dev/disk/by-uuid/F436-93A1";
+      fsType = "vfat";
+    };
+
+  fileSystems."/home/${username}/tmp" =
+    {
+      device = "none";
+      fsType = "tmpfs";
+      options = [ "uid=1000" "gid=100" "defaults" "size=8G" "mode=755" ];
+    };
+
+  fileSystems."/tmp" =
+    {
+      device = "tmpfs";
+      fsType = "tmpfs";
+    };
+
+  swapDevices = [{
+    device = "/var/swapfile";
+    size = 8 * 1024;
+  }];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.eno1.useDHCP = lib.mkDefault true;
+  # networking.interfaces.wlp4s0.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}