Add flake VM

hosts/muvm/hardware-configuration.nix

@@ -0,0 +1,18 @@
+{ config, lib, pkgs, modulesPath, ... }: {
+  imports =
+    [ (modulesPath + "/profiles/qemu-guest.nix")
+    ];
+
+  networking.useDHCP = lib.mkForce true;
+
+  virtualisation.vmVariant = {
+    # following configuration is added only when building VM with build-vm
+    virtualisation = {
+      memorySize = 2048; # Use 2048MiB memory.
+      cores = 3;
+      graphics = false;
+    };
+  };
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+}