refactoring!

hosts/vm1/configuration.nix

@@ -0,0 +1,10 @@
+{ config, pkgs, ... }:
+
+{
+  imports =
+    [ 
+      /etc/nixos/hardware-configuration.nix
+      /home/don/nixos/server/configuration.nix
+    ];
+  networking.hostName = "vm1"; 
+}

hosts/vm1/hardware-configuration.nix

@@ -0,0 +1,38 @@
+# 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, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/profiles/qemu-guest.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "ahci" "xhci_pci" "virtio_pci" "sr_mod" "virtio_blk" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ "kvm-intel" ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/vda3";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/vda1";
+      fsType = "vfat";
+    };
+
+    swapDevices =
+      [ { device = "/dev/vda2"; }
+      ];
+
+  # 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.enp1s0.useDHCP = lib.mkDefault true;
+
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+}